Display Resolution
Hello list;
First of all, this is a duplicate of a posting I made on the XFCE Desktop forum, with one update. I have not received a reply there, so I figured I'd give this list a shot, especially since this is probably not XFCE related.
I am working with a clean install of Debian Squeeze, with the XFCE window manager task selected. My primary problem is my screen resolution, with a secondary problem of only having something displayed on the left monitor.
I have a Dell Precision T5500, with dual monitors (sorry, I am unable to supply a model number for the monitors. If there is one, they managed to hide it quite effectively). The PC has dual video cards, but I am unsure just what they are. lspci gives me "VGA compatible controller: nVidia Corporation Device 0df8 (rev a1)" I can crack the case and physically look if that is needed. (UPDATE: The cards are both nVidia Quadro 600)
I can live with one display, but I am going to go blind if I do not fix the resolution. I am unable to set the resolution to the optimal of 1920x1200@60Hz. The display setting insists on 1600x1200@0Hz. I am using a DVI cable for both monitors, with the cable to the primary monitor plugged into DVI Connector-1 on the monitor, and the cable for the secondary monitor plugged into DVI Connector-2 on the monitor.
I have resolved similar issues in the past by using cvt and xrandr, but not this time:
~$ cvt 1920 1200 60
# 1920x1200 59.88 Hz (CVT 2.30MA) hsync: 74.56 kHz; pclk: 193.25 MHz
Modeline "1920x1200_60.00" 193.25 1920 2056 2256 2592 1200 1203 1209 1245 -hsync +vsync
~$ xrandr --newmode "1920x1200_60.00" 193.25 1920 2056 2256 2592 1200 1203 1209 1245 -hsync +vsync
xrandr: Failed to get size of gamma for output default
~$ xrandr --addmode default "1920x1200_60.00"
xrandr: Failed to get size of gamma for output default
~$ xrandr --output default --mode 1920x1200_60.00
xrandr: Failed to get size of gamma for output default
xrandr: Configure crtc 0 failed
I am unsure what either of the errors mean, nor how to proceed from here. Would anyone mind advising me as to what my next step should be?
Thanks,
Nelson
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