On 23/03/14 11:06, Tom Wijsman wrote: >On Sat, 22 Mar 2014 12:29:03 +0100 >null_ptr wrote: > >> I attached them. Old config/lsmod/dmesg is the first >> parameter of the diff. > >Looks okay to me; I see in the other thread that it was clarified that >this is a problem through the speakers/headset and thus not through the >PC speaker, which leads me to think you have either Volker's idea that >it is muted in alsa-mixer (why would a kernel upgrade do this?) or you >have an actual bug in one of the kernel sound modules (more likely?). It's definitely not muted. >If it is a kernel bug, then I think that switching back to the old >kernel would make it work again; if that's the case, I suggest you to >consider a git bisect between the two releases to find the bad commit: > >http://wiki.gentoo.org/wiki/Kernel_git-bisect Switching to the old kernel fixed it so I bisected the linux-stable sources (as in the wiki) and the first bad commit is bd450dcc357. Attached is the bisect.log. Since it seems like it's a kernel bug I will create a bug report. Thanks for the help and sorry that I wasn't as clear in the first place.