Activity log for bug #2045951

Date Who What changed Old value New value Message
2023-12-08 07:51:55 Ken Sharp bug added bug
2023-12-08 07:51:55 Ken Sharp attachment added apt history.log https://bugs.launchpad.net/bugs/2045951/+attachment/5727424/+files/history.log
2023-12-08 07:52:43 Ken Sharp attachment added apt history.log.1 https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.2/+bug/2045951/+attachment/5727428/+files/history.log.1.gz
2023-12-08 08:11:31 Ken Sharp bug watch added https://github.com/electron/electron/issues/40732
2023-12-08 08:18:57 Ken Sharp description The GpuWatchdog can segfault when using apps that use Electron (https://www.electronjs.org/) which uses the Chromium Embedded Framework (CEF) [Steam, Code, Spotify, Teams...]. Indeed the same crash can occur in Chrome and Brave. In my specific case this occurs when I have switched off my monitor and left the computer go idle for a while (I don't know the timings exactly and I don't know how to force the situation). The computer remains responsive until I log back in from the Mate lock screen [note: if I lock my screen I get the light-locker log-in so I do not know what causes the machine to choose the Mate lock screen]. Upon logging back in the system becomes unresponsive. I can access the machine over SSH and force a reboot. The segfault in GpuWatchdog appears immediately on logging back in. For me, this first appears to have occured on Dec 2. Dec 2 22:49:52 ken kernel: [191969.402923] GpuWatchdog[9387]: segfault at 0 ip 00007efc77192336 sp 00007efc6b9fd370 error 6 in libcef.so[7efc72cef000+776f000] likely on CPU 3 (core 3, socket 0) Dec 2 22:49:52 ken kernel: [191969.402960] Code: 89 de e8 3d ef 6e ff 80 7d cf 00 79 09 48 8b 7d b8 e8 be 65 2c 03 41 8b 84 24 e0 00 00 00 89 45 b8 48 8d 7d b8 e8 ca d7 b5 fb <c7> 04 25 00 00 00 00 37 13 00 00 48 83 c4 38 5b 41 5c 41 5d 41 5e I can find no earlier entry in the syslog. My apt history shows nothing obvious but I'll attach it anyway. This GpuWatchdog segfault in libcef.so seems to occur a surprising amount around the Internet but the trigger seems to vary. Nonetheless CEF shouldn't be causing systems to become unresponsive. It is possible (probable) there is a bug in the CEF, but equally it should not be able to make a system unresponsive unless there is a bug in the kernel or X – this occurs on all kinds of systems with all kinds of graphics so the graphics driver seems an unlikely cause. It is not unique to Ubuntu but I don't know where to start given all the possible components. The only bug reported kernel bug was closed as not enough information was supplied: https://bugzilla.kernel.org/show_bug.cgi?id=209129 This has been reported for Ubuntu a number of times but I thought it best to start fresh: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-450/+bug/1896560 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861294 https://bugs.launchpad.net/ubuntu/+source/syslog-ng/+bug/1903203 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1921286 From around the Interwebs: https://bbs.archlinux.org/viewtopic.php?id=263124 https://askubuntu.com/questions/1490916/gpuwatchdog-segfault-error-6-in-libcef-so-likely-on-cpu-15-core-7-socket-0 https://github.com/ValveSoftware/steam-for-linux/issues/7370 https://github.com/ValveSoftware/steam-for-linux/issues/9793 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1040399 https://unix.stackexchange.com/questions/658684/ms-teams-makes-the-whole-gui-stall-gpuwatchdog-segfault https://www.linuxquestions.org/questions/linux-software-2/kde-plasma-on-wayland-hardware-acceleration-lock-ups-4175718801/ For testing I tried the following but couldn't trigger this manually: Windows+L to lock screen, switch monitor off, switch back on and log back in. Windows+L to lock screen, switch monitor off, switch back on, choose "Switch user" and log back in. xset dpms force off then wake the screen up. Any ideas how to continue would be greatly appreciated. I'll test the upstream kernel and report back. Might take a day or two. I'm not 100% convinced it's a kernel bug at this point though. I also note the --disable-gpu-* options for CEF which I'll also test. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.2.0-37-generic 6.2.0-37.38~22.04.1 ProcVersionSignature: Ubuntu 6.2.0-37.38~22.04.1-generic 6.2.16 Uname: Linux 6.2.0-37-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: MATE Date: Fri Dec 8 07:09:25 2023 SourcePackage: linux-signed-hwe-6.2 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apport.crashdb.conf: [modified] mtime.conffile..etc.apport.crashdb.conf: 2019-08-06T11:56:22.315382 The GpuWatchdog can segfault when using apps that use Electron (https://www.electronjs.org/) which uses the Chromium Embedded Framework (CEF) [Steam, Code, Spotify, Teams, Discord...]. Indeed the same crash can occur in Chrome and Brave. In my specific case this occurs when I have switched off my monitor and left the computer go idle for a while (I don't know the timings exactly and I don't know how to force the situation). The computer remains responsive until I log back in from the Mate lock screen [note: if I lock my screen I get the light-locker log-in so I do not know what causes the machine to choose the Mate lock screen]. Upon logging back in the system becomes unresponsive. I can access the machine over SSH and force a reboot. The segfault in GpuWatchdog appears immediately on logging back in. For me, this first appears to have occured on Dec 2. Dec 2 22:49:52 ken kernel: [191969.402923] GpuWatchdog[9387]: segfault at 0 ip 00007efc77192336 sp 00007efc6b9fd370 error 6 in libcef.so[7efc72cef000+776f000] likely on CPU 3 (core 3, socket 0) Dec 2 22:49:52 ken kernel: [191969.402960] Code: 89 de e8 3d ef 6e ff 80 7d cf 00 79 09 48 8b 7d b8 e8 be 65 2c 03 41 8b 84 24 e0 00 00 00 89 45 b8 48 8d 7d b8 e8 ca d7 b5 fb <c7> 04 25 00 00 00 00 37 13 00 00 48 83 c4 38 5b 41 5c 41 5d 41 5e I can find no earlier entry in the syslog. My apt history shows nothing obvious but I'll attach it anyway. This GpuWatchdog segfault in libcef.so seems to occur a surprising amount around the Internet but the trigger seems to vary. Nonetheless CEF shouldn't be causing systems to become unresponsive. It is possible (probable) there is a bug in the CEF, but equally it should not be able to make a system unresponsive unless there is a bug in the kernel or X – this occurs on all kinds of systems with all kinds of graphics so the graphics driver seems an unlikely cause. It is not unique to Ubuntu but I don't know where to start given all the possible components. The only bug reported kernel bug was closed as not enough information was supplied: https://bugzilla.kernel.org/show_bug.cgi?id=209129 This has been reported for Ubuntu a number of times but I thought it best to start fresh: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-450/+bug/1896560 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861294 https://bugs.launchpad.net/ubuntu/+source/syslog-ng/+bug/1903203 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1921286 From around the Interwebs: https://bbs.archlinux.org/viewtopic.php?id=263124 https://askubuntu.com/questions/1490916/gpuwatchdog-segfault-error-6-in-libcef-so-likely-on-cpu-15-core-7-socket-0 https://github.com/ValveSoftware/steam-for-linux/issues/7370 https://github.com/ValveSoftware/steam-for-linux/issues/9793 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1040399 https://unix.stackexchange.com/questions/658684/ms-teams-makes-the-whole-gui-stall-gpuwatchdog-segfault https://www.linuxquestions.org/questions/linux-software-2/kde-plasma-on-wayland-hardware-acceleration-lock-ups-4175718801/ For testing I tried the following but couldn't trigger this manually: Windows+L to lock screen, switch monitor off, switch back on and log back in. Windows+L to lock screen, switch monitor off, switch back on, choose "Switch user" and log back in. xset dpms force off then wake the screen up. Any ideas how to continue would be greatly appreciated. I'll test the upstream kernel and report back. Might take a day or two. I'm not 100% convinced it's a kernel bug at this point though. I also note the --disable-gpu-* options for CEF which I'll also test. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.2.0-37-generic 6.2.0-37.38~22.04.1 ProcVersionSignature: Ubuntu 6.2.0-37.38~22.04.1-generic 6.2.16 Uname: Linux 6.2.0-37-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: MATE Date: Fri Dec 8 07:09:25 2023 SourcePackage: linux-signed-hwe-6.2 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apport.crashdb.conf: [modified] mtime.conffile..etc.apport.crashdb.conf: 2019-08-06T11:56:22.315382
2023-12-08 08:21:12 Ken Sharp description The GpuWatchdog can segfault when using apps that use Electron (https://www.electronjs.org/) which uses the Chromium Embedded Framework (CEF) [Steam, Code, Spotify, Teams, Discord...]. Indeed the same crash can occur in Chrome and Brave. In my specific case this occurs when I have switched off my monitor and left the computer go idle for a while (I don't know the timings exactly and I don't know how to force the situation). The computer remains responsive until I log back in from the Mate lock screen [note: if I lock my screen I get the light-locker log-in so I do not know what causes the machine to choose the Mate lock screen]. Upon logging back in the system becomes unresponsive. I can access the machine over SSH and force a reboot. The segfault in GpuWatchdog appears immediately on logging back in. For me, this first appears to have occured on Dec 2. Dec 2 22:49:52 ken kernel: [191969.402923] GpuWatchdog[9387]: segfault at 0 ip 00007efc77192336 sp 00007efc6b9fd370 error 6 in libcef.so[7efc72cef000+776f000] likely on CPU 3 (core 3, socket 0) Dec 2 22:49:52 ken kernel: [191969.402960] Code: 89 de e8 3d ef 6e ff 80 7d cf 00 79 09 48 8b 7d b8 e8 be 65 2c 03 41 8b 84 24 e0 00 00 00 89 45 b8 48 8d 7d b8 e8 ca d7 b5 fb <c7> 04 25 00 00 00 00 37 13 00 00 48 83 c4 38 5b 41 5c 41 5d 41 5e I can find no earlier entry in the syslog. My apt history shows nothing obvious but I'll attach it anyway. This GpuWatchdog segfault in libcef.so seems to occur a surprising amount around the Internet but the trigger seems to vary. Nonetheless CEF shouldn't be causing systems to become unresponsive. It is possible (probable) there is a bug in the CEF, but equally it should not be able to make a system unresponsive unless there is a bug in the kernel or X – this occurs on all kinds of systems with all kinds of graphics so the graphics driver seems an unlikely cause. It is not unique to Ubuntu but I don't know where to start given all the possible components. The only bug reported kernel bug was closed as not enough information was supplied: https://bugzilla.kernel.org/show_bug.cgi?id=209129 This has been reported for Ubuntu a number of times but I thought it best to start fresh: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-450/+bug/1896560 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861294 https://bugs.launchpad.net/ubuntu/+source/syslog-ng/+bug/1903203 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1921286 From around the Interwebs: https://bbs.archlinux.org/viewtopic.php?id=263124 https://askubuntu.com/questions/1490916/gpuwatchdog-segfault-error-6-in-libcef-so-likely-on-cpu-15-core-7-socket-0 https://github.com/ValveSoftware/steam-for-linux/issues/7370 https://github.com/ValveSoftware/steam-for-linux/issues/9793 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1040399 https://unix.stackexchange.com/questions/658684/ms-teams-makes-the-whole-gui-stall-gpuwatchdog-segfault https://www.linuxquestions.org/questions/linux-software-2/kde-plasma-on-wayland-hardware-acceleration-lock-ups-4175718801/ For testing I tried the following but couldn't trigger this manually: Windows+L to lock screen, switch monitor off, switch back on and log back in. Windows+L to lock screen, switch monitor off, switch back on, choose "Switch user" and log back in. xset dpms force off then wake the screen up. Any ideas how to continue would be greatly appreciated. I'll test the upstream kernel and report back. Might take a day or two. I'm not 100% convinced it's a kernel bug at this point though. I also note the --disable-gpu-* options for CEF which I'll also test. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.2.0-37-generic 6.2.0-37.38~22.04.1 ProcVersionSignature: Ubuntu 6.2.0-37.38~22.04.1-generic 6.2.16 Uname: Linux 6.2.0-37-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: MATE Date: Fri Dec 8 07:09:25 2023 SourcePackage: linux-signed-hwe-6.2 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apport.crashdb.conf: [modified] mtime.conffile..etc.apport.crashdb.conf: 2019-08-06T11:56:22.315382 The GpuWatchdog can segfault when using apps that use Electron (https://www.electronjs.org/) which uses the Chromium Embedded Framework (CEF) [Steam, Code, Spotify, Teams, Discord...]. Indeed the same crash can occur in Chrome and Brave. In my specific case this occurs when I have switched off my monitor and left the computer go idle for a while (I don't know the timings exactly and I don't know how to force the situation). The computer remains responsive until I log back in from the Mate lock screen [note: if I lock my screen I get the light-locker log-in so I do not know what causes the machine to choose the Mate lock screen]. Upon logging back in the system becomes unresponsive. I can access the machine over SSH and force a reboot. The segfault in GpuWatchdog appears immediately on logging back in. For me, this first appears to have occured on Dec 2. Dec 2 22:49:52 ken kernel: [191969.402923] GpuWatchdog[9387]: segfault at 0 ip 00007efc77192336 sp 00007efc6b9fd370 error 6 in libcef.so[7efc72cef000+776f000] likely on CPU 3 (core 3, socket 0) Dec 2 22:49:52 ken kernel: [191969.402960] Code: 89 de e8 3d ef 6e ff 80 7d cf 00 79 09 48 8b 7d b8 e8 be 65 2c 03 41 8b 84 24 e0 00 00 00 89 45 b8 48 8d 7d b8 e8 ca d7 b5 fb <c7> 04 25 00 00 00 00 37 13 00 00 48 83 c4 38 5b 41 5c 41 5d 41 5e I can find no earlier entry in the syslog. My apt history shows nothing obvious but I'll attach it anyway. This GpuWatchdog segfault in libcef.so seems to occur a surprising amount around the Internet but the trigger seems to vary. Nonetheless CEF shouldn't be causing systems to become unresponsive. It is possible (probable) there is a bug in the CEF, but equally it should not be able to make a system unresponsive unless there is a bug in the kernel or X – this occurs on all kinds of systems with all kinds of graphics so the graphics driver seems an unlikely cause. It is not unique to Ubuntu but I don't know where to start given all the possible components. The only bug reported kernel bug was closed as not enough information was supplied: https://bugzilla.kernel.org/show_bug.cgi?id=209129 This has been reported for Ubuntu a number of times but I thought it best to start fresh: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-450/+bug/1896560 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861294 https://bugs.launchpad.net/ubuntu/+source/syslog-ng/+bug/1903203 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1921286 From around the Interwebs: https://bbs.archlinux.org/viewtopic.php?id=263124 https://askubuntu.com/q/1490916/170177 https://github.com/ValveSoftware/steam-for-linux/issues/7370 https://github.com/ValveSoftware/steam-for-linux/issues/9793 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1040399 https://unix.stackexchange.com/q/658684/45386 https://www.linuxquestions.org/questions/linux-software-2/kde-plasma-on-wayland-hardware-acceleration-lock-ups-4175718801/ For testing I tried the following but couldn't trigger this manually: Windows+L to lock screen, switch monitor off, switch back on and log back in. Windows+L to lock screen, switch monitor off, switch back on, choose "Switch user" and log back in. xset dpms force off then wake the screen up. Any ideas how to continue would be greatly appreciated. I'll test the upstream kernel and report back. Might take a day or two. I'm not 100% convinced it's a kernel bug at this point though. I also note the --disable-gpu-* options for CEF which I'll also test. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.2.0-37-generic 6.2.0-37.38~22.04.1 ProcVersionSignature: Ubuntu 6.2.0-37.38~22.04.1-generic 6.2.16 Uname: Linux 6.2.0-37-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: MATE Date: Fri Dec 8 07:09:25 2023 SourcePackage: linux-signed-hwe-6.2 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apport.crashdb.conf: [modified] mtime.conffile..etc.apport.crashdb.conf: 2019-08-06T11:56:22.315382
2023-12-08 13:44:51 Launchpad Janitor linux-signed-hwe-6.2 (Ubuntu): status New Confirmed
2023-12-09 03:48:37 daas bug added subscriber daas
2023-12-10 11:21:07 Ken Sharp description The GpuWatchdog can segfault when using apps that use Electron (https://www.electronjs.org/) which uses the Chromium Embedded Framework (CEF) [Steam, Code, Spotify, Teams, Discord...]. Indeed the same crash can occur in Chrome and Brave. In my specific case this occurs when I have switched off my monitor and left the computer go idle for a while (I don't know the timings exactly and I don't know how to force the situation). The computer remains responsive until I log back in from the Mate lock screen [note: if I lock my screen I get the light-locker log-in so I do not know what causes the machine to choose the Mate lock screen]. Upon logging back in the system becomes unresponsive. I can access the machine over SSH and force a reboot. The segfault in GpuWatchdog appears immediately on logging back in. For me, this first appears to have occured on Dec 2. Dec 2 22:49:52 ken kernel: [191969.402923] GpuWatchdog[9387]: segfault at 0 ip 00007efc77192336 sp 00007efc6b9fd370 error 6 in libcef.so[7efc72cef000+776f000] likely on CPU 3 (core 3, socket 0) Dec 2 22:49:52 ken kernel: [191969.402960] Code: 89 de e8 3d ef 6e ff 80 7d cf 00 79 09 48 8b 7d b8 e8 be 65 2c 03 41 8b 84 24 e0 00 00 00 89 45 b8 48 8d 7d b8 e8 ca d7 b5 fb <c7> 04 25 00 00 00 00 37 13 00 00 48 83 c4 38 5b 41 5c 41 5d 41 5e I can find no earlier entry in the syslog. My apt history shows nothing obvious but I'll attach it anyway. This GpuWatchdog segfault in libcef.so seems to occur a surprising amount around the Internet but the trigger seems to vary. Nonetheless CEF shouldn't be causing systems to become unresponsive. It is possible (probable) there is a bug in the CEF, but equally it should not be able to make a system unresponsive unless there is a bug in the kernel or X – this occurs on all kinds of systems with all kinds of graphics so the graphics driver seems an unlikely cause. It is not unique to Ubuntu but I don't know where to start given all the possible components. The only bug reported kernel bug was closed as not enough information was supplied: https://bugzilla.kernel.org/show_bug.cgi?id=209129 This has been reported for Ubuntu a number of times but I thought it best to start fresh: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-450/+bug/1896560 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861294 https://bugs.launchpad.net/ubuntu/+source/syslog-ng/+bug/1903203 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1921286 From around the Interwebs: https://bbs.archlinux.org/viewtopic.php?id=263124 https://askubuntu.com/q/1490916/170177 https://github.com/ValveSoftware/steam-for-linux/issues/7370 https://github.com/ValveSoftware/steam-for-linux/issues/9793 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1040399 https://unix.stackexchange.com/q/658684/45386 https://www.linuxquestions.org/questions/linux-software-2/kde-plasma-on-wayland-hardware-acceleration-lock-ups-4175718801/ For testing I tried the following but couldn't trigger this manually: Windows+L to lock screen, switch monitor off, switch back on and log back in. Windows+L to lock screen, switch monitor off, switch back on, choose "Switch user" and log back in. xset dpms force off then wake the screen up. Any ideas how to continue would be greatly appreciated. I'll test the upstream kernel and report back. Might take a day or two. I'm not 100% convinced it's a kernel bug at this point though. I also note the --disable-gpu-* options for CEF which I'll also test. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.2.0-37-generic 6.2.0-37.38~22.04.1 ProcVersionSignature: Ubuntu 6.2.0-37.38~22.04.1-generic 6.2.16 Uname: Linux 6.2.0-37-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: MATE Date: Fri Dec 8 07:09:25 2023 SourcePackage: linux-signed-hwe-6.2 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apport.crashdb.conf: [modified] mtime.conffile..etc.apport.crashdb.conf: 2019-08-06T11:56:22.315382 The GpuWatchdog can segfault when using apps that use Electron (https://www.electronjs.org/) which uses the Chromium Embedded Framework (CEF) [Steam, Code, Spotify, Teams, Discord...]. Indeed the same crash can occur in Chrome and Brave. In my specific case this occurs when I have switched off my monitor and left the computer go idle for a while (I don't know the timings exactly and I don't know how to force the situation). The computer remains responsive until I log back in from the Mate lock screen [note: if I lock my screen I get the light-locker log-in so I do not know what causes the machine to choose the Mate lock screen]. Upon logging back in the system becomes unresponsive. I can access the machine over SSH and force a reboot. The segfault in GpuWatchdog appears immediately on logging back in. For me, this first appears to have occured on Dec 2. Dec 2 22:49:52 ken kernel: [191969.402923] GpuWatchdog[9387]: segfault at 0 ip 00007efc77192336 sp 00007efc6b9fd370 error 6 in libcef.so[7efc72cef000+776f000] likely on CPU 3 (core 3, socket 0) Dec 2 22:49:52 ken kernel: [191969.402960] Code: 89 de e8 3d ef 6e ff 80 7d cf 00 79 09 48 8b 7d b8 e8 be 65 2c 03 41 8b 84 24 e0 00 00 00 89 45 b8 48 8d 7d b8 e8 ca d7 b5 fb <c7> 04 25 00 00 00 00 37 13 00 00 48 83 c4 38 5b 41 5c 41 5d 41 5e I can find no earlier entry in the syslog. My apt history shows nothing obvious but I'll attach it anyway. This GpuWatchdog segfault in libcef.so seems to occur a surprising amount around the Internet but the trigger seems to vary. Nonetheless CEF shouldn't be causing systems to become unresponsive. It is possible (probable) there is a bug in the CEF, but equally it should not be able to make a system unresponsive unless there is a bug in the kernel or X – this occurs on all kinds of systems with all kinds of graphics so the graphics driver seems an unlikely cause. It is not unique to Ubuntu but I don't know where to start given all the possible components. The only upstream reported kernel bug was closed as not enough information was supplied: https://bugzilla.kernel.org/show_bug.cgi?id=209129 This has been reported for Ubuntu a number of times but I thought it best to start fresh: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-450/+bug/1896560 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861294 https://bugs.launchpad.net/ubuntu/+source/syslog-ng/+bug/1903203 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1921286 From around the Interwebs: https://bbs.archlinux.org/viewtopic.php?id=263124 https://askubuntu.com/q/1490916/170177 https://github.com/ValveSoftware/steam-for-linux/issues/7370 https://github.com/ValveSoftware/steam-for-linux/issues/9793 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1040399 https://unix.stackexchange.com/q/658684/45386 https://www.linuxquestions.org/questions/linux-software-2/kde-plasma-on-wayland-hardware-acceleration-lock-ups-4175718801/ For testing I tried the following but couldn't trigger this manually: Windows+L to lock screen, switch monitor off, switch back on and log back in. Windows+L to lock screen, switch monitor off, switch back on, choose "Switch user" and log back in. xset dpms force off then wake the screen up. Any ideas how to continue would be greatly appreciated. I'll test the upstream kernel and report back. Might take a day or two. I'm not 100% convinced it's a kernel bug at this point though. I also note the --disable-gpu-* options for CEF which I'll also test. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.2.0-37-generic 6.2.0-37.38~22.04.1 ProcVersionSignature: Ubuntu 6.2.0-37.38~22.04.1-generic 6.2.16 Uname: Linux 6.2.0-37-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: MATE Date: Fri Dec 8 07:09:25 2023 SourcePackage: linux-signed-hwe-6.2 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apport.crashdb.conf: [modified] mtime.conffile..etc.apport.crashdb.conf: 2019-08-06T11:56:22.315382
2023-12-30 13:11:00 ku4eto attachment added syslog https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.2/+bug/2045951/+attachment/5734774/+files/syslog