Also concerns a Acer Aspire Switch 10E SW3-013, with Lubuntu 22.04
(kernel 5.15).
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https://bugs.launchpad.net/bugs/1958410
Title:
bytcr_rt5640 sound not
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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It looks like "options snd-intel-dspcfg dsp_driver=2 to
/etc/modprobe.d/alsa-base.conf" works with #1942385 too (At Ubuntu 21.10
5.13.0-39-generic).
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Confirmed on Linx 1010b on LinuxMint 20.3
Added options snd-intel-dspcfg dsp_driver=2 to /etc/modprobe.d/alsa-base.conf
reboot into 5.13
spd-say "Talking too slowly"
shut down
go to bios and save
reboot into 5.13
spd-say "That'll do nicely"
Works in 5.14, plus it seems to still be good in 5.11.
I've found a fix
Add:
options snd-intel-dspcfg dsp_driver=2
To /etc/modprobe.d/alsa-base.conf and reboot
At first audio was playing at the incorrect rate (low pitched) which I
think is an ACPI issue. Going into the bios and saving then exiting and
letting Ubuntu boot up and audio is returned
FWIW:
dmesg | grep -Pi "alsa|pulse|sound|audio"
... for 5.11 and 5.14 differ.
5.11.0-46-generic (works)
[0.136592] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[3.051445] i915 :00:02.0: [drm] HDaudio controller not detected, using
LPE audio instead
[ 10.791703] input: Intel HDMI/DP
Also affects 22.04 on 5.15.0-23-generic
** Also affects: linux-meta-hwe-5.15 (Ubuntu)
Importance: Undecided
Status: New
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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
I've installed 21.10 on a stick and updated the kernel to 5.12.0-27. It
works fine there, so this is probably about kernel >= 5.13 AND NOT dist
=21.10
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I can confirm with the same device and Ubuntu rather than Mint.
Starting from a new install of Ubuntu 20.04.3 LTS with kernel 5.11.0-38,
sound works fine. I am offered an update to kernel 5.13.0-27 via the
package manager, after switching to this kernel sound does not work.
Tested using the
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-meta-hwe-5.13 (Ubuntu)
Status: New => Confirmed
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I live-booted from U 21.10*, which has a 5.13.0-19 kernel.
Bafflingly, sound test worked from the live system, even though alsa-
info shows rt5640,sof-bytcht.
Late now. I'll do it again tomorrow and grab inxi/pactl/alsa-info.
*Lost time making a USB boot stick with 32 bit EFI capability. mkusb
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