up vote 2 down vote favorite
share [g+] share [fb]

I need to set some fancy resolution, like 700x500, 320x860, 400x400 etc. The problem is that the output of the device is not recognized, so it's set to default. But when I add a newmode to xrandr it warns that "Failed to get size of gamma for output default". And after I add the new mode to default output, xrandr fails to set the new resolution, responding "Configure crtc 0 failed". How can I fix this issue?

link|improve this question
feedback

1 Answer

up vote 0 down vote accepted

Not every mode is possible. Here you can get nice example of some possible custom modelines. Still every modeline is not supported by every video card or monitor.

link|improve this answer
xrandr rounds the resolution that user wants to add to some possible value. but that's not the point of my question – dmdkv Nov 21 '11 at 5:39
As I said not every imaginable mode is possible. This is already hardware limitation. For instance width is usually multiple of 8 or more. Similar rules exists for number of lines (based on how this data is organized in memory chips). – Cougar Nov 22 '11 at 9:41
feedback

Your Answer

 
or
required, but never shown
discard

Not the answer you're looking for? Browse other questions tagged or ask your own question.