I'm not exactly describing one problem, because I feel like solving it would be useless.
In the last 3 months I had a HUGE amount of problems with my headphone jack / speakers. I am using Ubuntu 12.04 on an Alienware M17x machine. Ever since I installed Ubuntu 3 months ago, a new sound problem came up every day, here is a short list :
- Without an headphone jack, speakers work fine, but when I put my headphone jack in, sound still plays through my speakers; I have to go through pavucontrol to get the sound to go through my headphone jack (that is actually a very recurrent problem)
- Sound is very low in the headphone jack (barely audible if I go in pavucontrol and put the headphone volume at 150% and the room is quiet).
- Sound goes through both speakers and headphone jack when pavucontrol sets the output to headphone jack
- Microphone input is very low (barely audible as in the previous problem) but the microphone outputs the same thing as my headphone jack is outputting
- etc, etc, etc.
All these problems have one thing in common which pisses me off a lot : I was using my computer (I barely ever turn it off), all the settings were fine at some point, didn't touch anything, and then BAM problem. Very frustrating. I believe a cause might be because updates were done silently while I was using my computer but I admit I never actually noticed that the problems arrived right after an update. Otherwise I have no idea where these magical problems came from.
So here's the question : Why could I possibly get all these sound problems out of nowhere? I am not even bothering to ask how to fix them, because more often than not these problems were fixed by... ''dumb fixes'', i.e. go to some parameter in pavucontrol/alsamixer, switch it on then off (or the opposite) (in other words, doing nothing very special) and then BAM problem fixed. I am sick of these mysteries, as you can see.
sudo lsb_release -a:
No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.3 LTS Release: 12.04 Codename: precise
sudo uname -a:
Linux patrick-M17xR4 3.5.0-41-generic #64~precise1-Ubuntu SMP Thu Sep 12 16:50:04 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
sudo dpkg -l | grep alsa:
ii alsa-base 1.0.25+dfsg-0ubuntu1.1 ALSA driver configuration files ii alsa-utils 1.0.25-1ubuntu5.2 Utilities for configuring and using ALSA ii bluez-alsa 4.98-2ubuntu7 Bluetooth ALSA support ii bluez-alsa:i386 4.98-2ubuntu7 Bluetooth ALSA support rc gnome-alsamixer 0.9.7~cvs.20060916.ds.1-3 ALSA sound mixer for GNOME ii gstreamer0.10-alsa 0.10.36-1ubuntu0.1 GStreamer plugin for ALSA
sudo lspci | grep audio outputted nothing.