Problem with Intel emgd (GMA500)

Alan Cox alan at
Mon Oct 10 05:52:14 PDT 2011

> xrandr: Failed to get size of gamma for output default
> xrandr: screen cannot be larger that 640x480 (desired size 800x600)
> xrandr: Configure crtc 0 failed

xrandr won't allow you to change modes on the fbdev interface. The libdrm
tools will if it detected any other modes, however it tries to default to
the reported LCD panel size so you ought to get the size of your panel as
the default behaviour.


More information about the xorg mailing list