Re: ASoC: cs42l43: SDCA reattach timeout on Dell XPS 14 Panther Lake; chip stuck across distros and kernels; worked initially; still working at hardware level

[Charles Keepax <ckeepax@opensource.cirrus.com>]

On Wed, May 06, 2026 at 09:38:27PM +0200, Tobias Bachmann wrote:
> Hi all,
> 
> I'm hitting a persistent CS42L43 SDCA reattach timeout on a Dell XPS 14
> (Panther Lake) that I haven't been able to clear via any software means. Audio 
> worked correctly for several days after Arch Linux (with CachyOS kernel) 
> install, then stopped without any change in hardware, kernel version or audio-
> related software stack and has not recovered since across multiple kernels and 
> distributions.

Could I just double check when you say the sound is working
under Windows/Dell SupportAssist does that definitely include
the headphones?

The cs42l45 (note it is l45 here) only drives the headphones
and the cs35l57 drives the speakers. On Linux as these are all
bundled together into a soundcard, the cs42l45 failing to probe
will be affecting all audio, however on Windows I suspect each
is treated separately. So the speakers may continue to function
even if the headphones are broken.

Thanks for reporting this, apologies for the trouble. We will
have a look through the logs and see what we can come up with.

Thanks,
Charles