Control: retitle -1 linux-image-6.1.0-37-amd64: sound device occasionally doesn't appear after last microcode/kernel update on Lenovo Yoga Laptop
Hello,
On Thu, May 29, 2025 at 06:10:44PM +0200, Uwe Kleine-König wrote:
I added the i2c upstream maintainers for the i801 driver to Cc, maybe
they have a good idea. To get an idea, find more context at
https://bugs.debian.org/1106498.
On Sun, May 25, 2025 at 07:07:02PM -0400, sergio wrote:
> $ dmesg -T
> [dom may 25 18:35:13 2025] i801_smbus 0000:00:1f.4: Transaction timeout
> [dom may 25 18:35:13 2025] i801_smbus 0000:00:1f.4: Failed terminating the
> transaction
> [dom may 25 18:35:13 2025] i801_smbus 0000:00:1f.4: SMBus is busy, can't use
> it!
That sounds as if there was a problem with the smbus driver or one of
its devices. Maybe bus recovery would help, but the driver doesn't
support that. I don't know if that is implementable?
What devices do you have on the bus? (You can find that out in a first
approximation using `ls -l /sys/bus/i2c/devices/*`.)
Maybe this is a firmware issue. Are you running the newest BIOS on that
machine?
Another thing I wonder is: In the initial report you said this happens
since the last kernel and microcode update. Can you please check if
reverting to the old kernel and microcode reliably fixes the problem and
then try to update only one of the packages and retest. Ideally update
in small steps using packages from snapshot.debian.org to find out which
package and version actually broke your sound output.
Best regards
Uwe