** Changed in: linux-oem-5.10 (Ubuntu Focal)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/1930582
Title:
Fix ICL PCH no picture after S3
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-5.10 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Won't Fix
Status in linux-oem-5.10 source package in Focal:
Fix Committed
Status in linux source package in Hirsute:
Confirmed
Status in linux-oem-5.10 source package in Hirsute:
Invalid
Bug description:
[Impact]
Blank DP display after S3 on Intel GFX in ICL PCH desktop.
[Fix]
Use proper IRQ setup so the system in question can detect HPD after S3.
[Test]
Suspend and resume the system. No picture on DP display.
With the patch applied, DP display works as expected.
[Where problems could occur]
It changes how the Intel GFX setup its HPD IRQ, so hotplug detection
will be affected. This change is limited to ICL PCH.
This is the second patch of "drm/i915/gen9bc: Handle TGP PCH during
suspend/resume", but somehow it was omitted.
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