https://bugs.freedesktop.org/show_bug.cgi?id=106149
Bug ID: 106149
Summary: X fails to start with Raven Ridge APU and 1440p
monitor on DVI
Product: xorg
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/AMDgpu
Assignee: xorg-driver-ati@lists.x.org
Reporter: oyvi...@everdot.org
QA Contact: xorg-t...@lists.x.org
Created attachment 138948
--> https://bugs.freedesktop.org/attachment.cgi?id=138948&action=edit
kernel dmesg with lots of drm / amdgpu error
Xorg will not start, boot log stops at lightdm starting and it does not start
with a 1440p monitor connected via DVI.
Ryzen 2400G APU:
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven
Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev c6)
dmesg shows a red line saying:
[drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 1us * 100 tries -
tgn10_lock line:566
and a ton of other errors, attached.
xorg error log ends with
[ 128.160] (EE) modeset(0): failed to set mode: Invalid argument
Kernel is 4.15.17. Mesa version is 17.3.6.
A workaround for this error is to use a HDMI cable. That does work.
I can provide more information on this total scandal bug if someone tells me
what to provide and how.
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