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Groups > linux.debian.kernel > #77903

Bug#1028451: 2nd DisplayPort doesn't get video

Cross-posted to 2 groups.

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Source: linux
Followup-For: Bug #1028451

Fwiw there is a general regression with AMDGPU MST on linux 6.1; tracked upstream
here:
  https://gitlab.freedesktop.org/drm/amd/-/issues/2171

As the original report was about a second displayport on a docking station I
would guess it's the same issue. For reference i'm hit by the same issue due to
using MST for daisy-chaining monitors.



-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'oldstable-proposed-updates'), (500, 'oldstable-debug'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: armhf, arm64

Kernel: Linux 6.0.0-6-amd64 (SMP w/32 CPU threads; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

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Bug#1028451: 2nd DisplayPort doesn't get video Sjoerd Simons <sjoerd@debian.org> - 2023-01-12 12:40 +0100

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