Drop i915 PSR workarounds
Bug #1907285 reported by
Kai-Heng Feng
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| linux (Ubuntu) |
Confirmed
|
Low
|
Unassigned | ||
| Focal |
Won't Fix
|
Undecided
|
Unassigned | ||
| linux-oem-5.10 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
| Focal |
Fix Released
|
Low
|
Unassigned | ||
Bug Description
[Impact]
Disabling PSR helps some platforms but breaks others. So let's not play
this whack-a-mole game.
In addition to that, PSR can provide significant power saving, let Intel
SoC reach PC10 or even SLP_S0 withouth turning screen off.
[Fix]
Drop PSR workaround and stick to upstream code.
[Test]
Monitor numbers in /sys/kernel/
With PSR enabled, some Tiger Lake laptops can reach SLP_S0 without
turning screen off.
[Regression Potential]
Panels that don't work well with PSR may break again. If that ever
happens, we can introduce a blacklist on panels.
| Changed in linux (Ubuntu Focal): | |
| status: | New → Won't Fix |
| Changed in linux-oem-5.10 (Ubuntu): | |
| status: | New → Invalid |
| Changed in linux (Ubuntu): | |
| status: | New → Confirmed |
| Changed in linux-oem-5.10 (Ubuntu Focal): | |
| status: | New → Confirmed |
| Changed in linux (Ubuntu): | |
| importance: | Undecided → Low |
| Changed in linux-oem-5.10 (Ubuntu Focal): | |
| importance: | Undecided → Low |
| Changed in linux-oem-5.10 (Ubuntu Focal): | |
| status: | Confirmed → Fix Committed |
| tags: | added: verification-needed-focal |
| tags: |
added: verification-done-focal removed: verification-needed-focal |
| Changed in linux-oem-5.10 (Ubuntu Focal): | |
| status: | Fix Committed → Fix Released |
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