I can confirm that kernel 6.8.0-51 does not solve the problem. I now allowed Software Updater to update the kernel to version 6.8.0-51 . The laptop is unable to boot with the new kernel.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2092703 Title: Ubuntu 22.04 fails to start after kernel update to 6.8.0-50 Status in linux package in Ubuntu: Confirmed Bug description: Hello, I've recently (2024-12-24) updated the kernel in my Ubuntu 22.04 from 6.8.0-49 to 6.8.0-50, but it doesn't work. I can still successfully boot 6.8.0-49 kernel. I'm using Lenovo Thinkpad L15 Gen 2 with AMD Ryzen 5850U. As far as I noticed in boot logs from previous boot (journalctl -b -1), there is some problem with X.org: gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) modesetting: Driver for Modesetting Kernel Drivers: kms gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) FBDEV: driver for framebuffer: fbdev gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) VESA: driver for VESA chipsets: vesa gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: xf86EnableIO: failed to enable I/O ports 0000-03ff (Operation not permitted) gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) open /dev/dri/card0: No such file or directory gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (WW) Falling back to old probe method for modesetting gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) open /dev/dri/card0: No such file or directory gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) Loading sub module "fbdevhw" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) LoadModule: "fbdevhw" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) Loading /usr/lib/xorg/modules/libfbdevhw.so gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) Module fbdevhw: vendor="X.Org Foundation" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: compiled for 1.21.1.4, module version = 0.0.2 gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: ABI class: X.Org Video Driver, version 25.2 gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) Unable to find a valid framebuffer device gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (WW) Falling back to old probe method for fbdev gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) Loading sub module "fbdevhw" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) LoadModule: "fbdevhw" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) Loading /usr/lib/xorg/modules/libfbdevhw.so gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) Module fbdevhw: vendor="X.Org Foundation" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: compiled for 1.21.1.4, module version = 0.0.2 gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: ABI class: X.Org Video Driver, version 25.2 gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) open /dev/fb0: No such file or directory gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: vesa: Ignoring device with a bound kernel driver gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) Screen 0 deleted because of no matching config section. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) UnloadModule: "modesetting" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) Screen 0 deleted because of no matching config section. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) UnloadModule: "fbdev" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) UnloadSubModule: "fbdevhw" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) UnloadSubModule: "fbdevhw" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) UnloadSubModule: "fbdevhw" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) Screen 0 deleted because of no matching config section. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (II) UnloadModule: "vesa" gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) Device(s) detected, but none match those in the config file. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: Fatal server error: gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) no screens found(EE) gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: Please consult the The X.Org Foundation support gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: at http://wiki.x.org gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: for help. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1667]: (EE) Server terminated with error (1). Closing log file. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a /usr/libexec/gdm-x-session[1664]: Unable to run X server gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a gdm-launch-environment][1657]: pam_unix(gdm-launch-environment:session): session closed for user gdm gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a gdm3[1205]: Gdm: GdmDisplay: Session never registered, failing gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a gdm-launch-environment][1657]: GLib-GObject: g_object_unref: assertion 'G_IS_OBJECT (object)' failed gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a kernel: logitech-hidpp-device 0003:046D:4082.0004: HID++ 4.5 device connected. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a systemd[1]: session-c6.scope: Deactivated successfully. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a gdm3[1205]: Gdm: GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a gdm3[1205]: Gdm: Child process -1664 was already dead. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a gdm3[1205]: Gdm: GdmDisplay: Session never registered, failing gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a systemd-logind[1049]: Session c6 logged out. Waiting for processes to exit. gru 30 07:00:40 adrian-ThinkPad-L15-Gen-2a systemd-logind[1049]: Removed session c6. When booting 6.8.0-49 (the one that works fine), I see it uses /dev/dri/card1 instead (extract from logs attached as kernel-6.8.0-49-journalctl-boot-logs-ok.txt). I'm also attaching: - cat /proc/version_signature > version.log (from the working kernel 6.8.0-49) - sudo lspci -vnvn > lspci-vnvn.log (from the working kernel 6.8.0-49) - apt-updated-packages.txt - a list of updated packages - kernel-6.8.0-50-journalctl-boot-logs-issue.txt - extract from logs from journalctl -b -1 (boot attempt using problematic kernel 6.8.0-50) - kernel-6.8.0-49-journalctl-boot-logs-ok.txt - extract from logs from journalctl -b -0 (booting working kernel 6.8.0-49) How can I make kernel 6.8.0-50 work? BR, Adrian To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2092703/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
