Screens attached to Thinkpad Thunderbolt 3 Workstation Dock (40AN) go black (lose signal) after logging in

[Peter Stoll]

The dock is Type 40AN .

I already reported a bug, and was asked to run ubuntu-bug xorg, which I did and arrived here.
Probably you want to merge them. Please also mind the tons of reports from other users, which report the same or similar issues in the Ubuntu Forum, in the thread which I did open. Please see the other bug for a link.

In the current configuration I did downgrade the dock to an older firmware version as mentioned in my other bug ticket, and also by many other users in the Ubuntu Forum, since this is the only way it works at least partially, so that I'm able to submit this bug report.

The symptom right now is that I bootet with two 4 K Monitors connected, and could see at least for a while (at time of login screen) the magenta background, but then, after logging in, the 2 external Monitors get black and say something similar to 'Input Signal not Found'.
Opposed to this, when I open within Gnome the Settings > Displays ( or similar, I have it in German), then it tells me there that I have 2 external Monitors connected, which I can move around in that dialog, choose primary dialog etc.

On the console, where I run ubuntu-bug, I get this messages (repeatedly):

Errors:
Program binary could not be loaded. Binary is not compatible with current driver/hardware combination. Driver build date Oct 22 2020. Please check build information of source that generated the binary.

wind:~ $ [8190:8190:0112/191237.346935:ERROR:shared_context_state.cc(74)] Skia shader compilation error
-------------

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
Uname: Linux 5.4.35-custom-patched-26c16f9d9 x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.capabilities.gpu0: Error: [Errno 21] Ist ein Verzeichnis: '/proc/driver/nvidia/capabilities/gpu0'
.proc.driver.nvidia.capabilities.mig: Error: [Errno 21] Ist ein Verzeichnis: '/proc/driver/nvidia/capabilities/mig'
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Ist ein Verzeichnis: '/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 455.38 Thu Oct 22 06:06:59 UTC 2020
 GCC version: gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)
.tmp.unity_support_test.0:

ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue Jan 12 19:09:11 2021
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
 nvidia, 455.38, 5.4.0-58-generic, x86_64: installed
 nvidia, 455.38, 5.4.35-custom-patched-26c16f9d9, x86_64: installed
 virtualbox, 6.1.10, 5.4.0-58-generic, x86_64: installed
 virtualbox, 6.1.10, 5.4.35-custom-patched-26c16f9d9, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation UHD Graphics 630 (Mobile) [8086:3e9b] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Lenovo UHD Graphics 630 (Mobile) [17aa:229f]
 NVIDIA Corporation TU117GLM [Quadro T1000 Mobile] [10de:1fb9] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Lenovo TU117GLM [Quadro T1000 Mobile] [17aa:229f]
InstallationDate: Installed on 2020-05-05 (251 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: LENOVO 20QT000RGE
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-5.4.35-custom-patched-26c16f9d9 root=UUID=07e75e73-7d85-45e9-90a7-a83ea1f47c1c ro rootflags=subvol=@ quiet splash acpi_backlight=vendor vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/19/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2OET49W (1.36 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20QT000RGE
dmi.board.vendor: LENOVO
dmi.board.version: SDK0K17763 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN2OET49W(1.36):bd11/19/2020:svnLENOVO:pn20QT000RGE:pvrThinkPadP1Gen2:rvnLENOVO:rn20QT000RGE:rvrSDK0K17763WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad P1 Gen 2
dmi.product.name: 20QT000RGE
dmi.product.sku: LENOVO_MT_20QT_BU_Think_FM_ThinkPad P1 Gen 2
dmi.product.version: ThinkPad P1 Gen2
dmi.sys.vendor: LENOVO
modified.conffile..etc.default.apport:
 # set this to 0 to disable apport, or to 1 to enable it
 # you can temporarily override this with
 # sudo service apport start force_start=1
 enabled=0
mtime.conffile..etc.default.apport: 2020-05-06T01:05:34.863982
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.8-0ubuntu1~20.04.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.6
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

[Peter Stoll (peter-stoll)]

Please see the related Bug Ticket https://answers.launchpad.net/ubuntu-certification/+question/694734 .

[Vincent Gerris (vgerris)]

The AN40 with latest firmware does not give any picture at all on my Asus ROG flow 13 and a bunch of other devices. USB works, no screen device, HDMI or DP.

[Vincent Gerris (vgerris)]

that's on wayland by the way

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.