** Changed in: linux-oem-5.6 (Ubuntu Focal)
Status: Confirmed => Fix Committed
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.6 in Ubuntu.
https://bugs.launchpad.net/bugs/1908713
Title:
Fix suspend error of SOF driver
Status in HWE Next:
New
Status in linux-oem-5.6 package in Ubuntu:
Invalid
Status in linux-oem-5.6 source package in Focal:
Fix Committed
Bug description:
[Impact]
SOF driver in oem-5.6 kernel tries to access HDA codec register when the
codec is already suspended. This may freeze suspend.
[Fix]
Revert HDA codec PM direct-complete optimization.
The same suspend optimization works perfectly on 5.8 and 5.10 kernel, so
something's wrong in the SOF driver in oem-5.6. However, SOF in oem-5.6
is in Frankenstein state so we better not touch it.
[Test]
Suspend a laptop with SOF driver, it can take 30 seconds to suspend, or
worse, it freezes.
With the patch applied, it can suspend in 1 second.
[Regression Risk]
For HDA codecs that benefit from this PM optimization, it'll take longer
to suspend and resume. Nothing else changes other than that.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1908713/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
