change the ASoC card name and card longname to meet the requirement of alsa-lib-1.2.1 (Focal)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
Hui Wang |
Bug Description
In the ubuntu-20.04, we integrate the alsa-lib-1.2.1.2, and from the
alsa-lib-1.2.1, the ucm is put into a standalone package alsa-ucm-conf,
and from the 1.2.1, the alsa-lib supports the ucm2.
In the alsa-ucm-
card name or longname, kernel-v5.5-rc1 has patches to change those
names to new names. now we backport them to focal kernel.
[Impact]
booting with the focal kernel, the audio driver can't find the ucm2
confs, that is becuase alsa-lib-1.2.1 requires new cardname and long
name, but focal kernel provides the old card names.
[Fix]
backport 3 patches from v5.5-rc1.
[Test Case]
install the 20.04 daily build image, install the linux-firmware and
alsa-ucm-conf, booting with the kernel which have those 3 patches,
the alsa-lib could find the correct ucm2 confs.
[Regression Risk]
It is low risk to focal.
If users install focal kernel to bionic or disco, it will break
the audio since the ucm in the bionic and disco still follow the old
card name and longname, we need to link a new copy ucm named by new
cardname or longname in the bionic and disco.
CVE References
Changed in linux (Ubuntu): | |
importance: | Undecided → Critical |
importance: | Critical → High |
description: | updated |
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1862712
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.