Sound Crashes in Linux MInt 12 (Intel Corp 6 Series/C200)

[JNH]

Name of Sound Card: 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)

When I first log in, the sound works perfectly. When I either mute, hibernate, or do anything to affect the volume of sound, the sound diappears from the system. Nothing works: music, flash video, system sounds. I clicked on the sound menu > Sound Preferences > Preferences and checked everything possible and made sure nothing was muted. Then I checked alsamixer and did the same thing. It all checked out fine. The only way to get sound is to restart my system and make sure not to mute sound or hibernate my machine.

I also don't have any control with my keyboard keys over the sound anymore (this just happened recently). When I reset them in keyboard shortcuts they recognized volume up and volume down, but I had no control over the sound.

I have the same problem with the most recent version of Ubuntu. This always happens.

[JNH (jordannh)]

Well, recently the problem has still persisted, but I did find somthing interesting: when I go into sound preferences (gnome-control-center > Sound > Hardware), the only hardware setting that works is "Analog Stereo Output + Digital Stereo (IEC958 Input)" This setting keeps switching back at random moments and it's reset to Digital Stereo (HDMI) Output + Digital Stereo (IEC958 Input)" when I log in or when I suspend. I do have an HDMI connection to a TV, but I keep telling Linux Mint that the analog output is the correct output.

And now when I suspend my computer, sound does not work at all. No output whatsoever, no matter what sound profile I use.
Also, I have no keyboard control over the sound dispite the fact that the keys are set correctly in keyboard shortcuts.

Anybody out there? Thanks.

[Balthazar Rouberol (rouberol-b)]

I have the same bug on my machine: a Dell Latitude E6410, with x86_64 GNU/Linux Mint 12 3.0.0-12-generic.
Sound card: Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)

The settings "gnome-control-center > Sound > Output > Analog Stereo Output" and "gnome-control-center > Sound > Hardware > Analog Stereo Output" keep randomly changing respectively to "High Definition Audio Controller Digital Stereo (HDMI)" and "High Definition Audio Controller".

Whenever it does, I have no sound output whatsoever.

I know my sound card is not a Intel Corp 6 Series/C200, as specified in title, but the symptoms are the same. I thus figured my testimony could help.

[Balthazar Rouberol (rouberol-b)]

I stumbled upon this thread on the Linux Mint 12 forum: http://forums.linuxmint.com/viewtopic.php?f=49&t=102929 were a *simple* way to deactivate the HDMI hardware output is described (see http://forums.linuxmint.com/viewtopic.php?f=49&t=102929#p586901).
It seems to have worked for everyone in this thread (and me, for what it's worth), in the sense that no-one has experienced a random sound crash from then.

Note that this might not solve your problem if you want to regularly use the HDMI output. However, if that's not the case, that might just do the trick.

Hope it helps.