Restore proper ASPM L1ss setting on system resume
Bug #2037254 reported by
Kai-Heng Feng
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| linux-oem-6.1 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
| Jammy |
Confirmed
|
Medium
|
koba | ||
| linux-oem-6.5 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
| Jammy |
Confirmed
|
Medium
|
Unassigned | ||
Bug Description
[Impact]
Realtek cardreader drops from PCIe bus after system resume, because L1ss
became different.
[Fix]
Restore ASPM L1ss setting so the ASPM assumption made by driver can be
kept.
[Test]
The cardreader in question keeps working after S3 because the L1ss
remains the same after resume.
[Where problems could occur]
Drivers may already made "workaround" to circumvent the current L1ss
situation. So restoring the L1ss might break some drivers. That means we
should test this in OEM kernel for some cycles before let it land to
generic kernel.
| Changed in linux-oem-6.1 (Ubuntu): | |
| status: | New → Invalid |
| Changed in linux-oem-6.5 (Ubuntu): | |
| status: | New → Invalid |
| Changed in linux-oem-6.1 (Ubuntu Jammy): | |
| status: | New → Confirmed |
| Changed in linux-oem-6.5 (Ubuntu Jammy): | |
| status: | New → Confirmed |
| Changed in linux-oem-6.1 (Ubuntu Jammy): | |
| importance: | Undecided → Medium |
| Changed in linux-oem-6.5 (Ubuntu Jammy): | |
| importance: | Undecided → Medium |
| Changed in linux-oem-6.1 (Ubuntu Jammy): | |
| assignee: | nobody → koba (kobako) |
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