Thanks for the bug report. That's a kernel crash in the nouveau driver. But that driver is not well supported so we would usually recommend the official Nvidia driver instead. Unfortunately:
1. Your GeForce 310M GPU requires the Nvidia 340 driver only. Newer drivers don't support that GPU; and 2. The Nvidia 340 driver is no longer supported by Nvidia and no longer shipped in Ubuntu 21.04. I suggest using only Ubuntu 20.04 on this machine, which has a working version of the Nvidia 340 driver that you can install via the 'Additional Drivers' app. ** Package changed: xorg (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1940154 Title: Xorg freeze (nouveau/ttm use-after-free with full-screen video) Status in linux package in Ubuntu: New Bug description: Since upgrading to Ubuntu 21.04 yesterday, I've noticed several hangs during full-screen video playback (watching Youtube videos in Chromium). Often, it happens just after or during the switch to full- screen. The system stays running and I can connect via ssh, but restarting gdm3 has no effect and most of the time I've had to reboot. The latest hang recovered automatically when I left the machine alone for about 2 minutes, and produced the following messages in dmesg (I'll attach a more complete log): ``` [ 3520.856803] [TTM] Buffer eviction failed [ 3520.856856] ------------[ cut here ]------------ [ 3520.856859] refcount_t: underflow; use-after-free. [ 3520.856888] WARNING: CPU: 3 PID: 6842 at lib/refcount.c:28 refcount_warn_saturate+0xae/0xf0 ... [ 3520.857292] Call Trace: [ 3520.857305] ttm_bo_put+0x3f/0x50 [ttm] [ 3520.857331] nouveau_gem_new+0xc4/0x100 [nouveau] [ 3520.857611] ? nouveau_gem_new+0x100/0x100 [nouveau] [ 3520.857871] nouveau_gem_ioctl_new+0x5b/0x100 [nouveau] [ 3520.858133] ? nouveau_gem_new+0x100/0x100 [nouveau] [ 3520.858398] drm_ioctl_kernel+0xae/0xf0 [drm] [ 3520.858500] drm_ioctl+0x245/0x400 [drm] [ 3520.858586] ? nouveau_gem_new+0x100/0x100 [nouveau] [ 3520.858850] ? __fget_files+0x5f/0x90 [ 3520.858864] ? __fget_light+0x32/0x80 [ 3520.858879] nouveau_drm_ioctl+0x66/0xc0 [nouveau] [ 3520.859145] __x64_sys_ioctl+0x91/0xc0 [ 3520.859158] do_syscall_64+0x38/0x90 [ 3520.859170] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3520.859182] RIP: 0033:0x7fce8ceb0317 ``` ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: xorg 1:7.7+22ubuntu1 ProcVersionSignature: Ubuntu 5.11.0-31.33-generic 5.11.22 Uname: Linux 5.11.0-31-generic x86_64 NonfreeKernelModules: wl .tmp.unity_support_test.0: ApportVersion: 2.20.11-0ubuntu65.1 Architecture: amd64 CasperMD5CheckResult: unknown CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Mon Aug 16 23:36:04 2021 DistUpgraded: 2021-08-15 02:10:41,733 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py' DistroCodename: hirsute DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GpuHangFrequency: Several times a day GpuHangReproducibility: Occurs more often under certain circumstances GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: NVIDIA Corporation GT218M [GeForce 310M] [10de:0a70] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Samsung Electronics Co Ltd GT218M [GeForce 310M] [144d:c079] InstallationDate: Installed on 2014-06-27 (2607 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: SAMSUNG ELECTRONICS CO., LTD. Q430/Q530 ProcEnviron: LANGUAGE=en_IE:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_IE.UTF-8 SHELL=/usr/bin/zsh ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-31-generic root=UUID=fc20db83-0138-4e0c-b7e9-04da38c1e9e9 ro quiet splash acpi_backlight=vendor crashkernel=512M-:192M acpi_enforce_resources=lax crashkernel=512M-:192M vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: Upgraded to hirsute on 2021-08-15 (1 days ago) dmi.bios.date: 05/29/2010 dmi.bios.release: 2.0 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 02KF.M008.20100529.KSJ dmi.board.asset.tag: Tag 12345 dmi.board.name: Q430/Q530 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr02KF.M008.20100529.KSJ:bd05/29/2010:br2.0:svnSAMSUNGELECTRONICSCO.,LTD.:pnQ430/Q530:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnQ430/Q530:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: Q430/Q530 dmi.product.version: Not Applicable dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. version.compiz: compiz 1:0.9.14.1+20.10.20200813-0ubuntu4 version.libdrm2: libdrm2 2.4.105-3~21.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.3-0ubuntu0.2 version.libgl1-mesa-glx: libgl1-mesa-glx 21.0.3-0ubuntu0.2 version.xserver-xorg-core: xserver-xorg-core 2:1.20.11-1ubuntu1.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.6-2build1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1 xserver.bootTime: Sat Aug 14 22:37:51 2021 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.20.11-1ubuntu1~20.04.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1940154/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
