Ubuntu
xserver-xorg-video-intel package

  1. Bug #137234
  2. Comment #13

Comment 13 for bug 137234

Revision history for this message
Alfrenovsky (alfredo-fing) wrote : Re: [gutsy,hardy] Second display not enabled with "intel" video driver

Same thing happens to me.
With i810 drivers everything works. Even the fn-F5 key cycles between LCD, CRT, LCD+CRT...

with intel driver xrandr reports VGA monitor connected (When I connect it), and with the same resolution and position that the LCD one, but the external monitor doesn't wake up.
In the debugged logs I can see that the Samsung monitor or an external EPSON projector is detected and the EDID chat is done. But I have no signal.

I can turn off the LCD and it works. I can turn it on by typing blindly, and it works, but when I change any VGA output setting, even when xrandr reports the settings has been applied, nothing happens.

I think the problem could be the VGA power saving option that keeps enabled.
Anyone knows how can I interact directly with VGA card energy saving settings.