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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-utils in Ubuntu. https://bugs.launchpad.net/bugs/1899745 Title: [SRU] alsa-utils: let alsactl support _boot section defined in ucm Status in HWE Next: New Status in alsa-utils package in Ubuntu: Fix Released Status in alsa-utils source package in Focal: Fix Released Bug description: This patchset was backported from mainline alsa-utils 1.2.3, and groovy already integrated alsa-utils 1.2.3, there is no need to SRU this patchset to groovy, so only for focal. [Impact] We enabled 2 Dell soundwire audio machines, these machines depend on ucm to make the audio work, and in the ucm, the _boot section defined some amixers values for the 1st booting, these amixer values should be set to audio driver at the 1st booting, otherwise the whole audio doesn't work. [Fix] Backport some patches from mainline v1.2.3, these patches make the alsactl support _boot section in the ucm, then the systemd will call alsactl init after booting, the alsactl init will setting all amixers defined in the _boot section of ucm. [Test Case] On the Dell soundwire audio machines, After booting up, run 'amixer contents | less' to check all amixer values defined in the _boot section of ucm, all values read from driver are same as the ones in the ucm, test speaker/microphone/headset, all work well. [Regression Risk] This could introduce failure on runing 'alsactl init' for some machines, then the amixers will not be initialized correctly, users will experience all audio can't work like speaker doesn't output sound or microphone can't record sound. But this regression possibility is very low, since We have tested it both on soundwire machines and non-soundwire machines, all worked well. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1899745/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp