When the desktop resolution in BackTrack 4 is relatively low, you can temporarily adjust it from the command line.
First, check the resolutions supported by the current monitor:
xrandr
Then choose the resolution you need, for example:
xrandr -s 1024x768
Here, 1024x768 can be changed as needed to any available mode already listed in the xrandr output. This command usually only takes effect for the current session. If the resolution returns to the original setting after a reboot, add the same command to a startup script, or further check the display settings in the X configuration file.
