I'm running Ubuntu 12.04 (LTS) on my Lenovo ThinkPad Edge E525 and I can't seem to get any sound out of the built-in speakers on my Notebook. I have tried rebooting, purging alsa, reinstalling and more and can't seem to get the thing to work. The same thing has happened on LinuxMint 16.
When I do "cat /proc/asound/cards" I get the following output
graham@graham-laptop:~$ cat /proc/asound/cards 0 [Generic ]: HDA-Intel - HD-Audio Generic HD-Audio Generic at 0xf0b44000 irq 47 1 [Generic_1 ]: HDA-Intel - HD-Audio Generic HD-Audio Generic at 0xf0b40000 irq 16 4 [ThinkPadEC ]: ThinkPad EC - ThinkPad Console Audio Control ThinkPad Console Audio Control at EC reg 0x30, fw unknown
Sound works perfectly fine, though if I plug in headphones into the jack socket. Can anybody help?