| Bug ID | 110993 |
|---|---|
| Summary | GP107GLM [Quadro P1000 Mobile]: frequent failure to initialize displays on Thunderbolt dock |
| Product | xorg |
| Version | git |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | Driver/nouveau |
| Assignee | nouveau@lists.freedesktop.org |
| Reporter | markus@bluegap.ch |
| QA Contact | xorg-team@lists.x.org |
When connecting to the Thunderbolt 3 Dock, the monitors attached to it more often remain black rather than showing a proper image. Sometimes the Laptop freezes entirely, other times just one of the two comes up, most of the time, they remain black and eventually enter standby. I'm using a Lenovo P1 featuring a Quadro P1000 Mobile GPU. An integrated GPU is wired to the internal display as eDP-1. The Nvidia card exposes an HDMI port on the laptop. Plugging a monitor there directly usually works. Vie the docking station, I get another 3 ports controlled by the Nvidia GPU. These are either HDMI or DisplayPort. I have two monitors for experimentation, a Dell one and a Lenovo one. I'm running a Linux 5.2-rc5 kernel and the nouveau driver compiled from a current checkout of the git repo of Ben Skeggs (https://github.com/skeggsb/nouveau/tree/f91e915b6a12c281aed4401a869881f293b72d4e). Most of the time, I'm running with the runpm_fixes of Karol Herbst (that is the last five revisions from https://github.com/karolherbst/nouveau/tree/runpm_fixes). The output of `grep . /sys/class/drm/card*-*/status` after a start w/o the dock or any display attached is: /sys/class/drm/card0-eDP-1/status:connected /sys/class/drm/card1-DP-1/status:disconnected /sys/class/drm/card1-DP-2/status:disconnected /sys/class/drm/card1-HDMI-A-1/status:connected /sys/class/drm/card1-eDP-2/status:disconnected I'll provide further details of what I did together with the corresponding kernel logs with tracing enabled in follow-up comments and attachments.
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