Workaround CSS timeout on AMD SNPS 3.0 xHC
Bug #1806838 reported by
Kai-Heng Feng
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
Cosmic |
Fix Released
|
Undecided
|
Unassigned | ||
Disco |
Fix Released
|
Undecided
|
Unassigned | ||
linux-oem (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
Cosmic |
Fix Released
|
Undecided
|
Unassigned | ||
Disco |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[Impact]
Raven Ridge xHC may fail to suspend, causes the USB stops working, and blocks the system entering system-wide suspend.
[Fix]
It's a hardware/firmware bug, workarounded by bailing out suspend function if it ever fails, and reset the xHC in next resume function.
[Test]
After applying the patch, the USB works, and the system can enter S3 consecutively.
[Regression Potential]
Minimal. This workaround only applies to AMD Raven Ridge xHC.
tags: | added: originate-from-1790597 somerville |
Changed in linux (Ubuntu Disco): | |
status: | Incomplete → Fix Committed |
Changed in linux (Ubuntu Bionic): | |
status: | New → Fix Committed |
Changed in linux (Ubuntu Cosmic): | |
status: | New → Fix Committed |
Changed in linux-oem (Ubuntu Cosmic): | |
status: | New → Fix Released |
Changed in linux-oem (Ubuntu Disco): | |
status: | New → Fix Released |
tags: |
added: verification-done-cosmic removed: verification-needed-cosmic |
Changed in hwe-next: | |
status: | New → Fix Released |
tags: | added: cscc |
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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 1806838
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.