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
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-
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. | #1 |
| Changed in linux (Ubuntu): | |
| status: | New → Incomplete |
| tags: | added: bionic |
Revision history for this message
| Yuan-Chen Cheng (ycheng-twn) wrote | #2 |
| Changed in linux (Ubuntu): | |
| status: | Incomplete → New |
Revision history for this message
| Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote | #3 |
| Changed in linux (Ubuntu): | |
| status: | New → Incomplete |
Revision history for this message
| Kai-Heng Feng (kaihengfeng) wrote | #4 |
| 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 | #5 |
| Changed in oem-priority: | |
| status: | Confirmed → Triaged |
| Changed in oem-priority: | |
| assignee: | Yuan-Chen Cheng (ycheng-twn) → nobody |
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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.