Dear kernel-team members, I upgraded my debian-amd/testing from kernel 3.1 to 3.2. (stock kernel). After upgrade I dicovered, I am getting no sound output. In CLI I can see, that the soundfile is playing, but there is no output. Reverting to the former kernel let me play sound again, so it is confirmed, that it is a kernel problem. Below I have attached a zip-file. It contents the output of alsa-info.sh. The one "-with-sound" is made with kernel 3.1, the one "-no-sound" is made with kernel 3.2. Hope this helps. Best regards Hans-J. Ullrich
Created attachment 72356 [details] output of alsa-info.sh
Both Headphone and Speaker volumes are set to almost zero. Try to raise these. % amixer -c0 set Speaker 0dB % amixer -c0 set Headphone 0dB % amixer -c0 set Master -12dB
Hi Takashi, they are risen to full height! I checked this before(!) with kmixer and alsamixer, too. Maybe, this is the main problem? I mean, that they are risen, but the module does not take this. Hans
Do you mean kmixer and alsamixer show these as full although these aren't in raw values? It's odd. Please double-check with "alsamixer -c0". Without -c0, it'd be routed forcibly through PulseAudio and shows only Master volume. And changing the values like in comment 2 actually fixes your problem?
Hi Takashi, thank you for your help. Due to your questions I found the reason! I started alsamixer as you suggested, and I got an additional slider called "speaker". This one was set indeed to 0. I raised it and voila - got sound again. I checked it in my GUI of kmixer, and there it was missing, too. As I never used the slider for "speaker" all the time (just "master" and "pcm"), I forgot about it. An the new kernel semmed to set this one to 0 by default. So it was PEBKAC, but without your help, I would have never found it! So thank you very, very much for your time! I am very happy again. You can safely close this bugreport. Have a nice day! Best greetz Hans