alsa/hdmi: the hdmi audio stops working from Ubuntu-4.4.0-155.182
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
High
|
Hui Wang | ||
Xenial |
Fix Released
|
High
|
Unassigned |
Bug Description
[Impact]
We had a Dell machine, this machine was enabled with ubuntu 4.4
kernel before, but recently the hdmi audio on this machine stopped
working with the latest ubuntu 4.4. kernel. The system can't detect
its plugging and can't output sound to it anymore.
[Fix]
This is because we backported a patch from stable updates, and that
patch is for v5.2 kernel, if we backported it to 4.4 kernel, we need
to do some change, and also we need to backport one more patch from
stabe kernel.
[Test Case]
Connect a monitor to the machine and boot up, after booting up, we
could see the hdmi audio is found, and play sound to the hdmi audio,
we could hear the sound from monitor.
[Regression Risk]
It is possible to make the hdmi audio fail to work after applying this
patchset, like the hdmi audio can't be detected after plugging a hdmi
monitor. But this possibility is very low, we tested the patchset on
many dell and lenovo machines, all worked well.
CVE References
Changed in linux (Ubuntu): | |
importance: | Undecided → High |
Changed in linux (Ubuntu Xenial): | |
importance: | Undecided → High |
status: | New → In Progress |
Changed in linux (Ubuntu): | |
status: | New → In Progress |
tags: | added: oem-priority originate-from-1892835 somerville |
description: | updated |
Changed in linux (Ubuntu Xenial): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Released |
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- xenial' to 'verification- done-xenial' . If the problem still exists, change the tag 'verification- needed- xenial' to 'verification- failed- xenial' .
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!