Also affects my Archos Cesium 90 with the same basic specification I found booting back to the 5.11 kernel in grub after the 5.13 kernel upgrade while returning audio had pitch shifted the audio very low and caused slow video playback
The only current solution I have is to install the generic 5.4 kernel and remove the HWE packages -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-meta-hwe-5.13 in Ubuntu. 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 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-hwe-5.13/+bug/1958410/+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
