This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-focal -- 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 : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
