Ubuntu
xserver-xorg-video-intel package

  1. Bug #745112
  2. Comment #132

Comment 132 for bug 745112

Revision history for this message
In , Martin Pool (mbp) wrote :

It seems like if I force audio off at the same time I add the external screen, through xrandr, it does work reliably(?) so far. Using the monitor control panel or fn-f7 apparently puts audio back to the 'auto' setting, which does induce a problem

I tried running

for i in `seq 30` ;do; echo i && xrandr --output DP1 --off && sleep 15 && xrandr --output DP1 --mode 2560x1600 --above LVDS1 --set audio off && sleep 15 || break;done

and this got through 14 iterations successfully.

Now I wonder if I can identify what the problem is with audio or provide a way to force it off. This screen does have an option for speakers to be connected, but I'm not using it. I don't know if it picks up audio across dp.