This bug was fixed in the package linux-oem-5.6 - 5.6.0-1027.27
---------------
linux-oem-5.6 (5.6.0-1027.27) focal; urgency=medium
* focal/linux-oem-5.6: 5.6.0-1027.27 -proposed tracker (LP: #1894714)
* [SRU] [Focal/OEM-5.6/Groovy]Fix AMD usb host controller lost after stress S3
(LP: #1893914)
- SAUCE: xhci: workaround for S3 issue on AMD SNPS 3.0 xHC
-- Timo Aaltonen <[email protected]> Mon, 07 Sep 2020
19:24:05 +0300
** Changed in: linux-oem-5.6 (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1893914
Title:
[SRU] [Focal/OEM-5.6/Groovy]Fix AMD usb host controller lost after
stress S3
Status in HWE Next:
In Progress
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-5.6 package in Ubuntu:
In Progress
Status in linux source package in Focal:
In Progress
Status in linux-oem-5.6 source package in Focal:
Fix Released
Status in linux source package in Groovy:
In Progress
Bug description:
[Impact]
When stress S3 on AMD 0x15e5 usb host controller, it failed to resume.
The controller indicates "internal Host Controller Error"
[Fix]
To fix this, sparse controller enable bit has to be disabled.
[Test Case]
Verified on the target platform, OK for 100 times of S3.
[Regression Potential]
Low,
Add specific ID quirk for hw, no other hw related, tested with positive
results.
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