ThinkPad P72 - Very serious issues with external monitors on Thunderbolt dock
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
nvidia-graphics-drivers-440 (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
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:/
- Downgrading the NVIDIA driver version to both 435 and 390 - neither worked
Downgrading to an older kernel (4.19) appears to work, but it still has some issues with locking up while repositioning displays using xrandr.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSign
Uname: Linux 5.4.0-28-generic x86_64
NonfreeKernelMo
.proc.driver.
.proc.driver.
.proc.driver.
.proc.driver.
.proc.driver.
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
CasperMD5CheckR
CompizPlugins: No value set for `/apps/
CompositorRunning: None
Date: Sun May 3 00:37:27 2020
DistUpgraded: 2020-03-04 19:48:20,592 DEBUG Running PostInstallScript: './xorg_
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!)
ExtraDebuggingI
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-
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
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.
dmi.board.name: 20MCS08200
dmi.board.vendor: LENOVO
dmi.board.version: SDK0Q40104 WIN
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: ThinkPad P72
dmi.product.name: 20MCS08200
dmi.product.sku: LENOVO_
dmi.product.
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.
version.
version.
version.
version.
version.
version.
version.
description: | updated |
affects: | linux (Ubuntu) → nvidia-graphics-drivers-440 (Ubuntu) |
Changed in nvidia-graphics-drivers-440 (Ubuntu): | |
status: | Incomplete → New |
Note:
1. It's likely all of your display ports are connected to the Intel GPU so we can probably ignore Nvidia here. To be sure please try disabling the discrete GPU in your BIOS and verify the bug still occurs.
2. If older kernels like 4.19 work then this should be assigned to the kernel.