** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
** Changed in: linux-oem-5.17 (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1989647
Title:
Fix AMDGPU: No video output and system hangs with two monitor (dGPU:
W6400)
Status in HWE Next:
New
Status in linux package in Ubuntu:
Invalid
Status in linux-oem-5.17 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
In Progress
Status in linux-oem-5.17 source package in Jammy:
In Progress
Bug description:
[Impact]
There's possibility that system will hang and no video output of two external
monitor with dGPU W6400
Monitor 1: ASUS ProArt PA238Q (FHD)
Monitor 2: Dell P2415Q (4K)
[Fix]
Introduce the dmi quirk in amdgpu,
and add dmi quirks to bypass the affected machine.
[Test Case]
Two ways to verify
Method 1:
1. Cold boot with ASUS
2. Attach Dell monitor. ASUS is primary.
3. Switch display mode to single ASUS
4. Switch disaply mode back to Joing Displays. ASUS is primary
Method 2:
1. Cold boot with two monitors. ASUS is primary
2. Unplug the DP cable of Dell monitor from DUT and wait for few seconds
3. Plug it back to DUT
[Where problems could occur]
Low, add a dmi quirk to bypass the target machine.
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