Possible Duplicate:
Why are my speakers working but not my headphones?
It kicked in after upgrade to ubuntu 11.10
when I connect headphones, output channel (observed through control panel sound section) switches to headphones and volume level in headphones is extremely low
workarounds:
set output channel back to speakers. Volume level in headphones pops in to normal
switch profile in hardware section to some other and then back
raise
Speaker
volume inalsamixer
Currently I am in a hurry and not looking for proper fix.
Is there a way to disable auto-switch output channel when I connect headphones?
PS. strange thing: when I run alsamixer -c 0
,
there is no bar above Headphones
section, just |00|
, like they are not connected, therefore I cannot rise volume level manually
/var/log/....
that have a modification timestamp around the time you plugged the headphones in - maybe some task is bragging about turning headphones down. Try:touch /tmp/now
, plug in headphones (cause the problem), thenfind /var/log -type f -newer /tmp/now | xargs less
. Useless
'sG
command to get to the end of each file, and see what's up. You could also check for logs in your$HOME
withfind $HOME -type f -newer /tmp/now | xargs less
.