monitor hotplug not working as external d-sub or display port connect amd gpu and internal lcd connect to intel gpu.

Bug #1841139 reported by Yuan-Chen Cheng
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
OEM Priority Project
Triaged
High
Unassigned
linux (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

Platform: dell 5420 / 5424 with AMD GPU.
D-SUB or display port hot plug won't work in bionic with bionic kernel oem 4.15 -1048 and oem-osp1 5.0 -1016. It can be work around with amdgpu.runpm=0 kernel parameter, with the price of higher power consumption.

As install bios 89.7.48 + Kernel: 4.15.0-1043-oem + amdgpu: amdgpu-pro-19.10-793418
The hotplug works. However, no DP audio (unless boot with DP plugged).

Changed in oem-priority:
importance: Undecided → High
status: New → Confirmed
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1841139

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
tags: added: bionic
Revision history for this message
Yuan-Chen Cheng (ycheng-twn) wrote :

try to run apport-collect 1841139, however "amixer -c1 info" hang, kill it with -9 won't work.

Taipei office have access to the machine.

Changed in linux (Ubuntu):
status: Incomplete → New
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1841139

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
Revision history for this message
Kai-Heng Feng (kaihengfeng) wrote :
Changed in linux (Ubuntu):
status: Incomplete → Fix Committed
status: Fix Committed → Confirmed
Changed in oem-priority:
assignee: nobody → Yuan-Chen Cheng (ycheng-twn)
Revision history for this message
Yuan-Chen Cheng (ycheng-twn) wrote :

still can reproduce this issue with mainline kernel 5.3-rc5.

Changed in oem-priority:
status: Confirmed → Triaged
Rex Tsai (chihchun)
Changed in oem-priority:
assignee: Yuan-Chen Cheng (ycheng-twn) → nobody
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