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/1893290 Title: The DP/HDMI audio via USB-C to DP dongle or Dell Zeus adapter can't work after suspend Status in HWE Next: New Status in linux-oem-5.6 package in Ubuntu: In Progress Status in linux-oem-5.6 source package in Focal: Fix Committed Bug description: Since this patch is CCed to stable kernel, I just sent this patch to oem-5.6 kernel, our oem project is waiting for this patch to be landed to oem-5.6 kernel first. [Impact] On the Dell TGL laptop, if connecting a monitor via type-c to DP/HDMI adapter, we will have an audio issue, that is playing the music and suspend the system, after resuming back, the audio can't output from DP/HDMI monitor anymore. [Fix] Cherry-pick a fix from upstream, this patch is verifying the needed converter and pin to be in the D0 state. [Test Case] Connect a monitor with USB-C to DP/HDMI adapter, open the youtu.com and playing sth, suspend the system and resume, check if the sound could play the music, repeat 20 times, all work very well. [Regression Risk] If this patch could introduce regression, it should be the power consumption regression on Intel HDMI audio, since it makes the converter and pin to be D0 state earlier than before. But this impact is very small. one converter and one pin consume very little power. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1893290/+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
