** Changed in: linux-oem-5.10 (Ubuntu Focal)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/1912676
Title:
Fix regression introduced by codec PM change
Status in HWE Next:
New
Status in OEM Priority Project:
New
Status in linux package in Ubuntu:
Incomplete
Status in linux-oem-5.10 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Invalid
Status in linux-oem-5.10 source package in Focal:
Fix Committed
Status in linux source package in Groovy:
Confirmed
Status in linux-oem-5.10 source package in Groovy:
Invalid
Bug description:
[Impact]
After the codec PM optimization, laptops with SOF may take very long to
suspend. In addition to that, HDA may not be able to be runtim suspended
again after resume from hibernation.
[Fix]
Prevent the SOF driver touches codec during system suspend, and properly
refcount the PM usage counter.
[Test]
On an affected SOF system, it takes 5 mins to suspend.
On another affected HDA system, S4 resume causes high power consumption
becuase HDA controller can't be runtime suspended.
Both issues are gone by applying these patches.
[Where problems could occur]
If somehow any laptop depends on the old behavior to work properly, this
can break them. It's highly unlikely though.
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