** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1798328
Title:
USB cardreader (0bda:0328) make the system can't enter s3 or hang
Status in HWE Next:
New
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Bionic:
Fix Committed
Bug description:
[Impact]
We have a couple o lenovo laptops, they have the realtek cardreader
(0bda:0328),
this cardreader is the latest product from realtek, and it uses the common
usb-to-scsi driver UAS. When the system suspend and resume, the USB host will
print some errors like can't disable the device under this USB bus and
reset-and-verify fails, after that the system can't suspend anymore and hang
randomly.
[Fix]
the mainline build v4.17-rc1 doesn't have this issue, so through bisecting,
we found this patch can fix the problem.
[Test Case]
suspend and resume 30 times, and plug sd storage card into the cardreader,
everything worked well.
[Regression Potential]
Low, we tested this patch on 7 different lenovo laptops. After suspending
and resuming for 30 times, the system still worked well, and plug a usb
storage, it still worked well.
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