Activity log for bug #2119012

Date Who What changed Old value New value Message
2025-07-29 14:05:21 Juerg Haefliger bug added bug
2025-07-29 15:21:14 Juerg Haefliger summary Installation fails in a container Installation fails in a chroot
2025-07-29 15:21:28 Juerg Haefliger description postinst calls update-grub which fails if the package is installed in a container/chroot. This breaks Ubuntu Studio livefs builds: https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio From a build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing: lowlatency-kernel postinst calls update-grub which fails if the package is installed in a chroot. This breaks Ubuntu Studio livefs builds: https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio From a build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel
2025-07-29 15:46:23 Juerg Haefliger nominated for series Ubuntu Noble
2025-07-29 15:46:23 Juerg Haefliger bug task added lowlatency-kernel (Ubuntu Noble)
2025-07-29 15:46:23 Juerg Haefliger nominated for series Ubuntu Plucky
2025-07-29 15:46:23 Juerg Haefliger bug task added lowlatency-kernel (Ubuntu Plucky)
2025-07-29 15:57:50 Juerg Haefliger nominated for series Ubuntu Questing
2025-07-29 15:57:50 Juerg Haefliger bug task added lowlatency-kernel (Ubuntu Questing)
2025-07-29 17:40:25 Juerg Haefliger lowlatency-kernel (Ubuntu Questing): assignee Juerg Haefliger (juergh)
2025-07-29 17:40:27 Juerg Haefliger lowlatency-kernel (Ubuntu Plucky): assignee Juerg Haefliger (juergh)
2025-07-29 17:40:29 Juerg Haefliger lowlatency-kernel (Ubuntu Noble): assignee Juerg Haefliger (juergh)
2025-07-29 20:42:49 Paride Legovini lowlatency-kernel (Ubuntu Noble): milestone ubuntu-24.04.3
2025-07-30 15:59:35 Juerg Haefliger summary Installation fails in a chroot Ubuntu Studio CD image build fails
2025-07-30 16:00:09 Juerg Haefliger summary Ubuntu Studio CD image build fails Ubuntu Studio CD image build failure
2025-07-30 16:02:54 Juerg Haefliger description postinst calls update-grub which fails if the package is installed in a chroot. This breaks Ubuntu Studio livefs builds: https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio From a build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. Problem 1) postinst calls update-grub which fails if the package is installed in a chroot. This breaks Ubuntu Studio livefs builds: https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio From a build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel
2025-07-30 16:04:17 Juerg Haefliger description Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. Problem 1) postinst calls update-grub which fails if the package is installed in a chroot. This breaks Ubuntu Studio livefs builds: https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio From a build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel
2025-07-30 18:48:31 Juerg Haefliger description Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs.
2025-07-30 18:48:47 Juerg Haefliger bug task added livecd-rootfs (Ubuntu)
2025-07-30 18:52:50 Juerg Haefliger attachment added lowlatency-kernel_1.3.debdiff https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/2119012/+attachment/5894868/+files/lowlatency-kernel_1.3.debdiff
2025-07-30 18:53:32 Juerg Haefliger attachment added lowlatency-kernel_1.3~24.04.1.debdiff https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/2119012/+attachment/5894869/+files/lowlatency-kernel_1.3~24.04.1.debdiff
2025-07-30 18:54:47 Juerg Haefliger attachment added livecd-rootfs_24.04.91.debdiff https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/2119012/+attachment/5894870/+files/livecd-rootfs_24.04.91.debdiff
2025-07-30 18:56:03 Juerg Haefliger merge proposal linked https://code.launchpad.net/~juergh/livecd-rootfs/+git/livecd-rootfs/+merge/489967
2025-07-30 19:43:31 Dan Bungert livecd-rootfs (Ubuntu Plucky): status New Won't Fix
2025-07-30 19:43:42 Dan Bungert livecd-rootfs (Ubuntu Noble): status New In Progress
2025-07-30 19:43:44 Dan Bungert livecd-rootfs (Ubuntu Questing): status New In Progress
2025-07-30 19:43:46 Dan Bungert livecd-rootfs (Ubuntu Noble): assignee Dan Bungert (dbungert)
2025-07-30 19:43:47 Dan Bungert livecd-rootfs (Ubuntu Questing): assignee Dan Bungert (dbungert)
2025-07-30 23:15:07 Dan Bungert livecd-rootfs (Ubuntu Questing): status In Progress New
2025-07-30 23:15:09 Dan Bungert livecd-rootfs (Ubuntu Questing): assignee Dan Bungert (dbungert)
2025-07-30 23:15:12 Dan Bungert livecd-rootfs (Ubuntu Noble): assignee Dan Bungert (dbungert)
2025-07-30 23:15:14 Dan Bungert livecd-rootfs (Ubuntu Noble): status In Progress Fix Committed
2025-07-31 00:28:17 Ubuntu Foundations Team Bug Bot tags patch
2025-07-31 09:02:58 Juerg Haefliger description Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed
2025-07-31 13:39:36 Paride Legovini lowlatency-kernel (Ubuntu Noble): status New In Progress
2025-07-31 13:50:39 Juerg Haefliger description Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed [ Impact ] Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed [ Test Plan ] Trigger an Ubuntu Studio livefs build and watch it succeed. [ Where Problems Could Occur ] Other consumers of livecd-rootfs could fail, i.e., other livefs builds might fail due to livecd-rootfs changes. Machines that have then lowlatency-kernel package installed might not update grub.cfg and hence not switch the kernel to lowlatency but continue to run with generic settings.
2025-07-31 14:39:39 Dan Bungert lowlatency-kernel (Ubuntu Noble): status In Progress Fix Committed
2025-07-31 17:51:02 Andreas Hasenack bug added subscriber Ubuntu Stable Release Updates Team
2025-07-31 17:51:08 Andreas Hasenack tags patch patch verification-needed verification-needed-noble
2025-07-31 21:25:02 Launchpad Janitor livecd-rootfs (Ubuntu): status New Confirmed
2025-07-31 21:25:02 Launchpad Janitor lowlatency-kernel (Ubuntu): status New Confirmed
2025-07-31 21:25:02 Launchpad Janitor lowlatency-kernel (Ubuntu Plucky): status New Confirmed
2025-08-01 06:19:43 Juerg Haefliger tags patch verification-needed verification-needed-noble patch verification-done-noble verification-needed
2025-08-01 10:47:24 Launchpad Janitor lowlatency-kernel (Ubuntu Questing): status Confirmed Fix Released
2025-08-01 13:00:31 Juerg Haefliger merge proposal linked https://code.launchpad.net/~juergh/debian-cd/+git/ubuntu/+merge/490092
2025-08-01 13:02:03 Juerg Haefliger description [ Impact ] Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed [ Test Plan ] Trigger an Ubuntu Studio livefs build and watch it succeed. [ Where Problems Could Occur ] Other consumers of livecd-rootfs could fail, i.e., other livefs builds might fail due to livecd-rootfs changes. Machines that have then lowlatency-kernel package installed might not update grub.cfg and hence not switch the kernel to lowlatency but continue to run with generic settings. [ Impact ] Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed Problem 3) [ Test Plan ] 1. Trigger an Ubuntu Studio livefs build and watch it succeed. 2. Boot a resulting CD image and verify the running kernel is lowlatency. 3. Install Ubuntu Studio and verify the running kernel is lowlatency. [ Where Problems Could Occur ] Other consumers of livecd-rootfs could fail, i.e., other livefs builds might fail due to livecd-rootfs changes. Machines that have then lowlatency-kernel package installed might not update grub.cfg and hence not switch the kernel to lowlatency but continue to run with generic settings.
2025-08-01 13:08:28 Andreas Hasenack tags patch verification-done-noble verification-needed patch verification-needed verification-needed-noble
2025-08-01 15:26:58 Juerg Haefliger description [ Impact ] Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed Problem 3) [ Test Plan ] 1. Trigger an Ubuntu Studio livefs build and watch it succeed. 2. Boot a resulting CD image and verify the running kernel is lowlatency. 3. Install Ubuntu Studio and verify the running kernel is lowlatency. [ Where Problems Could Occur ] Other consumers of livecd-rootfs could fail, i.e., other livefs builds might fail due to livecd-rootfs changes. Machines that have then lowlatency-kernel package installed might not update grub.cfg and hence not switch the kernel to lowlatency but continue to run with generic settings. [ Impact ] Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed Problem 3) [ Test Plan ] 1. Trigger an Ubuntu Studio livefs build and watch it succeed. 2. Boot a resulting CD image and verify the running kernel is lowlatency. 3. Install Ubuntu Studio and verify the running kernel is lowlatency. [ Where Problems Could Occur ] Other consumers of livecd-rootfs could fail, i.e., other livefs builds might fail due to livecd-rootfs changes. Machines that have the lowlatency-kernel package installed might not update grub.cfg and hence not switch the kernel to lowlatency but continue to run with generic settings.
2025-08-02 07:59:40 Juerg Haefliger description [ Impact ] Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed Problem 3) [ Test Plan ] 1. Trigger an Ubuntu Studio livefs build and watch it succeed. 2. Boot a resulting CD image and verify the running kernel is lowlatency. 3. Install Ubuntu Studio and verify the running kernel is lowlatency. [ Where Problems Could Occur ] Other consumers of livecd-rootfs could fail, i.e., other livefs builds might fail due to livecd-rootfs changes. Machines that have the lowlatency-kernel package installed might not update grub.cfg and hence not switch the kernel to lowlatency but continue to run with generic settings. [ Impact ] Ubuntu Studio uses the lowlatency kernel. With 6.14, the lowlatency kernel is just the generic kernel with some bootargs to make it lowlatency. This breaks the Ubuntu Studio livefs and CD image builds. https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/noble/ubuntustudio Problem 1) The postinst hook of the lowlatency-kernel package calls update-grub unconditionally which fails if the package is installed in a chroot. From a livefs build log: Processing triggers for dbus (1.14.10-4ubuntu4.1) ... Processing triggers for libgtk-3-0t64:amd64 (3.24.41-4ubuntu1.3) ... Processing triggers for shared-mime-info (2.4-4) ... Processing triggers for libgtk2.0-0t64:amd64 (2.24.33-4ubuntu1.1) ... Processing triggers for desktop-file-utils (0.27-2build1) ... Processing triggers for initramfs-tools (0.142ubuntu25.5) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for libc-bin (2.39-0ubuntu8.5) ... Processing triggers for man-db (2.12.0-4build2) ... Processing triggers for dictionaries-common (1.29.7) ... Processing triggers for linux-image-6.14.0-24-generic (6.14.0-24.24~24.04.3) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic cryptsetup: ERROR: Couldn't resolve device overlay cryptsetup: WARNING: Couldn't determine root device cryptsetup: ERROR: Couldn't resolve device /dev/vdb Errors were encountered while processing:  lowlatency-kernel Problem 2) The kernel flavor name changed from 'lowlatency' to 'generic'. This breaks livecd-rootfs. [2025-07-30 21:10:37] No catalog entry template for standard.live [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] No kernel output for lowlatency! [2025-07-30 21:10:38] P: Begin unmounting filesystems... [2025-07-30 21:10:38] P: Saving caches... [2025-07-30 21:10:38] Build failed Problem 3) The ISO kernel is the generic kernel now so needs additional boot args to make it lowlatency. Otherwise 'Try Ubuntu Studio' will run the generic kernel which is likely not what we want. [ Test Plan ] 1. Trigger an Ubuntu Studio livefs build and watch it succeed. 2. Boot a resulting CD image and verify the running kernel is lowlatency. 3. Install Ubuntu Studio and verify the running kernel is lowlatency. [ Where Problems Could Occur ] Other consumers of livecd-rootfs could fail, i.e., other livefs builds might fail due to livecd-rootfs changes. Machines that have the lowlatency-kernel package installed might not update grub.cfg and hence not switch the kernel to lowlatency but continue to run with generic settings.
2025-08-04 09:29:48 Launchpad Janitor lowlatency-kernel (Ubuntu Noble): status Fix Committed Fix Released
2025-08-04 09:34:09 Launchpad Janitor livecd-rootfs (Ubuntu Noble): status Fix Committed Fix Released
2025-08-15 10:19:40 Timo Aaltonen lowlatency-kernel (Ubuntu Plucky): status Confirmed Fix Committed
2025-08-15 10:19:44 Timo Aaltonen tags patch verification-needed verification-needed-noble patch verification-needed verification-needed-noble verification-needed-plucky
2025-08-19 07:56:55 Juerg Haefliger tags patch verification-needed verification-needed-noble verification-needed-plucky patch verification-done-plucky verification-needed verification-needed-noble
2025-08-19 07:58:59 Juerg Haefliger tags patch verification-done-plucky verification-needed verification-needed-noble patch verification-done-noble verification-done-plucky verification-needed
2025-08-26 04:06:07 Launchpad Janitor lowlatency-kernel (Ubuntu Plucky): status Fix Committed Fix Released
2025-08-26 04:06:12 Chris Halse Rogers removed subscriber Ubuntu Stable Release Updates Team