The system won't play sound on the internal speaker of the laptop, but only on the headphone. When I put the headphone jack half in and fiddle around with it, then it'll play even on the internal speakers (the system apparently believes, that the headphone are in). What should I do?
The technical data:
Laptop modell Medion Erazer X6815
$ sudo aplay -l | egrep ^card card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog] card 0: PCH [HDA Intel PCH], device 1: ALC269VB Digital [ALC269VB Digital] card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Ubuntu 12.04 64bit
$ uname -a Linux matatabisama-X6815 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24 16:52:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux