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Backtrack: Upgrade to Linux Kernel 3.2.6 xrandr screen only supports 1920×1200

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Mar 022012

After upgrading to Linux kernel 3.2.6, rebooting, reconfiguring initramfs for encrypted drives, rebooting again, and reinstalling ati graphics, my normal xrandr command no longer worked. That command is:

Source code

xrandr --output LVDS --mode 1920x1200 --pos 1680x0 --rotate normal --output CRT1 --mode 1680x1050 --pos 0x0 --rotate normal --output DFP2 --off --output DFP1 --off

And the error was “xrandr screen only supports 1920 x 1200”

The fix is really simple….