On Tuesday, 1 March 2022 21:38:03 CET Flacusbigotis wrote: > I read at [1] (see at bottom) that there was a problem with xhci in > kernel 5.10 (which was fixed in a later kernel than 5.10) which could > cause these USB cards to not work. So, I compiled the latest vanilla > kernel (5.16.11) from kernel.org and booted up Bullseye with it. > > The boot did not succeed 100% (some other things broke, such as lightdm),
IIUC that pertains to commit 09f736aa95476631227d2dc0e6b9aeee1ad7ed58 from Linus' tree and that was included in 5.16-rc4. In commit fa75f593c867cde772e2d87ca36ab735c4aa4a09 it was included in the 5.15 branch and part of 5.15.7 release and there is a stable backport kernel version 5.15.15-2~bpo11+1 which should be safe to install on a Debian Stable system and with that you can check whether f.e. lightdm works properly. (The default config of upstream kernel is not the same as Debian uses, which could cause the issues you still saw.) But I just found in 90c915051c3df2d6d98d506323ab805bc1da7ae3 that it was also applied to the 5.10 branch and included in the 5.10.84 release. Your initial report mentioned a 5.10.92-1 kernel so that should already have it?!? I don't know all that is needed to get it fixed as it appears that this commit alone isn't enough. I hope it's still useful info which could bring the full solution closer.
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