Public bug reported: I'm running Ubuntu 20.04 LTS on a ThinkPad P72 with a Quadro P5200. I recently purchased the ThinkPad Workstation Dock Gen2 and have been having issues with external displays on it.
There are a multitude of issues with this. Sometimes you can plug in displays and both will show up fine after running xrandr --auto. Sometimes only one will appear and the other will stay black. There is a chance for any of these things to happen after making a display configuration change: - Nothing (displays work fine) - One display stays black - All displays including laptop internal display freeze, which is recoverable only by physically disconnecting the displays from the dock - Displays flicker on and off rapidly before every one goes dark including the laptop's internal display, requiring a hard reset. I have tried: - Upgrading to a newer kernel version (5.6.7) via mainline - Upgrading all system firmware, including dock, to latest via Lenovo Vantage in Windows dual boot - Downgrading the dock firmware from 3166 to 3164 - despite suggestions by people in this thread in the Lenovo community https://forums.lenovo.com/t5/Ubuntu/Thinkpad-P1-Gen2-amp-Thunderbolt-3-Workstation-Dock-amp-Linux-Ubuntu-Monitor-s-black/m-p/4575709?page=3 - this did not work - Downgrading the NVIDIA driver version to both 435 and 390 - neither worked ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30 Uname: Linux 5.4.0-28-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.suspend: suspend hibernate resume .proc.driver.nvidia.suspend_depth: default modeset uvm .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 440.64 Fri Feb 21 01:17:26 UTC 2020 GCC version: gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2) ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sun May 3 00:37:27 2020 DistUpgraded: 2020-03-04 19:48:20,592 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: focal DistroVariant: ubuntu DkmsStatus: acpi-call, 1.1.0, 5.4.0-28-generic, x86_64: installed nvidia, 440.64, 5.4.0-28-generic, x86_64: installed v4l2loopback, 0.12.3, 5.4.0-28-generic, x86_64: installed wireguard, 1.0.20200413, 5.4.0-28-generic, x86_64: installed (WARNING! Diff between built and installed module!) ExtraDebuggingInterest: Yes, including running git bisection searches GpuHangFrequency: This is the first time GraphicsCard: Intel Corporation Device [8086:3e94] (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:2269] NVIDIA Corporation GP104GLM [Quadro P5200 Mobile] [10de:1bb5] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Lenovo GP104GLM [Quadro P5200 Mobile] [17aa:2269] InstallationDate: Installed on 2019-10-19 (196 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) MachineType: LENOVO 20MCS08200 ProcEnviron: LANGUAGE=en_GB:en TERM=xterm-256color PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-28-generic root=/dev/mapper/vgubuntu-root ro quiet splash intel_iommu=on default_hugepagesz=1G hugepagesz=1G hugepages=32 transparent_hugepage=never vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: Upgraded to focal on 2020-03-04 (59 days ago) dmi.bios.date: 01/15/2020 dmi.bios.vendor: LENOVO dmi.bios.version: N2CET50W (1.33 ) dmi.board.asset.tag: Not Available dmi.board.name: 20MCS08200 dmi.board.vendor: LENOVO dmi.board.version: SDK0Q40104 WIN dmi.chassis.asset.tag: 00040 dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN2CET50W(1.33):bd01/15/2020:svnLENOVO:pn20MCS08200:pvrThinkPadP72:rvnLENOVO:rn20MCS08200:rvrSDK0Q40104WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad P72 dmi.product.name: 20MCS08200 dmi.product.sku: LENOVO_MT_20MC_BU_Think_FM_ThinkPad P72 dmi.product.version: ThinkPad P72 dmi.sys.vendor: LENOVO nvidia-settings: ERROR: Unable to load info from any available system ERROR: Unable to load info from any available system version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.101-2 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.4-2ubuntu1 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal freeze possible-manual-nvidia-install ubuntu -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1876534 Title: ThinkPad P72 - Very serious issues with external monitors on Thunderbolt dock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1876534/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
