Since you mentioned neither linux-firmware version 1.173.8 nor 1.173.9 would work for you, which was last updated to REL0440 at bug 1829737 for the same symptom on also 9560/9462 devices, maybe that's one 9560 variant that we don't have. Then I would like ask you for a favor, to confirm which version(s) works for you:
Ha, thank you. That's what I'm looking for.
So now we have the firmware name, and the next step would be to find out which version will work for you. And so far we have:
* Bionic: REL0440
* Cosmic: REL0329
* Disco: REL0420
* korg/master: REL0472
Since you mentioned neither linux-firmware version 1.173.8 nor 1.173.9 would work for you, which was last updated to REL0440 at bug 1829737 for the same symptom on also 9560/9462 devices, maybe that's one 9560 variant that we don't have. Then I would like ask you for a favor, to confirm which version(s) works for you:
* REL0450: https:/ /git.kernel. org/pub/ scm/linux/ kernel/ git/firmware/ linux-firmware. git/plain/ intel/ibt- 17-16-1. sfi?id= abb7cb6465ddaa6 4eab9ee487024b9 aaee780f4b
and/or,
* REL0472: https:/ /git.kernel. org/pub/ scm/linux/ kernel/ git/firmware/ linux-firmware. git/plain/ intel/ibt- 17-16-1. sfi?id= a5ee41544a092e3 5fb6b8324687e8a 32488f6e26
And please also give me the md5sum of /lib/firmware/ intel/ibt- 17-16-1. sfi when installed to your system and that fixes this problem.
From your comment #9 I suppose at least REL0472 should work, but I also need to know if REL0450 is sufficient enough. Thank you.