Test with a Ubuntu 16.04 4.4 Kernel on Bionic, the problem remains, booted an original 16.04 Live disc which uses nouveau as the primary display driver - the problem remains as well. I think we can mark it off as a hardware problem.
-- 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/1744935 Title: [i915] Display Corruption Status in linux package in Ubuntu: Invalid Bug description: Sometime during a regular package update of Ubuntu of 17.10 I started having screen corruption issues within GL apps (e.g. WebGL on google maps) on both the external screens as well as the laptops (Thinkpad T460p), but then spread further to the regular desktop. I updated to Ubuntu 18.04 to try to resolve the issue and then even updated the kernel to the Linux-4.15-rc8 (4.15.0-994-generic) but the issues remain on both Wayland and Xorg. It seems related to the 3D acceleration since the corruption only starts with gdm, not on the framebuffer before. The issue happens on every boot. The i915 module is loaded with its default parameters, the nvidia card is deactivated with switcheroo and the proprietary driver has never been installed. The corruption is best described as flashing distortions associated with timers and/or input events. Sometimes a whole triangular section of up to a quarter of the double-screen setup is streched and/or discolored or blacked out. Sometimes black squares (a few pixels) splatter the whole screen for a few frames until a damaged region is updated. It looks like some kind of shader issue. Sometimes the screen gets stuck for a few seconds (presumably the hang from the crashdump attached), so it's possible that there are multiple issues but I can't discern them. dmesg reports: ` [31026.161705] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [31731.589497] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [32477.060892] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [35533.800723] [drm] GPU HANG: ecode 9:0:0x85dffffb, in gnome-shell [14269], reason: Hang on rcs0, action: reset [35533.800725] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [35533.800725] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [35533.800725] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [35533.800726] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [35533.800726] [drm] GPU crash dump saved to /sys/class/drm/card1/error [35533.800768] i915 0000:00:02.0: Resetting rcs0 after gpu hang [36101.847545] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [41209.093879] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [43073.711135] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [43339.548927] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [43886.208705] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [44617.864814] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. [45925.860575] i915 0000:00:02.0: Resetting rcs0 after gpu hang ` The memory size in UEFI is already set to the maximum of 512Mb. --- ApportVersion: 2.20.8-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gdm 1396 F.... pulseaudio abr 1860 F.... pulseaudio DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=c566c6bc-3708-4170-8812-823802420564 InstallationDate: Installed on 2017-05-30 (238 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) MachineType: LENOVO 20FW003PMZ Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-25-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.13.0-25-generic N/A linux-backports-modules-4.13.0-25-generic N/A linux-firmware 1.170 Tags: bionic Uname: Linux 4.13.0-25-generic x86_64 UpgradeStatus: Upgraded to bionic on 2018-01-11 (12 days ago) UserGroups: _MarkForUpload: True dmi.bios.date: 12/18/2017 dmi.bios.vendor: LENOVO dmi.bios.version: R07ET81W (2.21 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FW003PMZ dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrR07ET81W(2.21):bd12/18/2017:svnLENOVO:pn20FW003PMZ:pvrThinkPadT460p:rvnLENOVO:rn20FW003PMZ:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T460p dmi.product.name: 20FW003PMZ dmi.product.version: ThinkPad T460p dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1744935/+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
