Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-meta-hwe-5.15 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1958410
Title:
bytcr_rt5640 sound not working with kernel >= 5.13
Status in linux-meta-hwe-5.13 package in Ubuntu:
Confirmed
Status in linux-meta-hwe-5.15 package in Ubuntu:
Confirmed
Bug description:
Using the built in speakers on a Linx 1010b. The 5.11 kernel works
fine, but 5.13 and 5.14 fail.
The card, when working is seen in alsa-info as bytcrrt5640,bytcr-
rt5640, whereas in the later (hwe-20.04-edge, oem-20.04d) kernels
where it fails, it is seen as "rt5640,sof-bytcht rt5640"
When failing, speaker-test, spd-say, and most other sound sources seem
to get 'sunk', and the level meter on the pulse mixer shows activity.
FWIW "espeak-ng hello" blocks on the broken setup.
I confess I'm not actually using the linux-meta-hwe-5.13 as it is
unavailable in LinuxMint. I am using linux-generic-hwe-20.04-edge,
which AFAICT pulls in the same kernels. apt policy pointed me to
report here.
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