Red Hat Bugzilla – Bug 609559
attempting dual screen enable invariably shuts down main laptop screen
Last modified: 2011-06-27 15:12:08 EDT
Description of problem:
thinkpad t60p. main laptop screen is 1680x1050, 2nd monitor to be attached is a westinghouse 1400x1050 lcd. upon connecting the 2nd monitor and executing "xrandr" in a terminal or using system-config-display or gnome-display-properties, the 2nd monitor comes to life and the main screen goes dark. the condition is not correctable without a reboot: once the main screen is gone, it stays gone. notably, gnome-display-properties shows radio button "on" (it believes the main laptop screen is active) because clicking "off" (and apply) causes gnome-display-properties to re-arrange the apparent position (left/right) of the two monitors. clicking main screen "on" again, 2nd screen flickers and stays on as things are done under the hood after apply, but main screen stays dark.
Version-Release number of selected component (if applicable):
01:00.0 VGA compatible controller: ATI Technologies Inc M56GL [Mobility FireGL V5250]
Steps to Reproduce:
1. plug in 2nd monitor
2. run any of xrandr, system-config-display, gnome-display-properties
3. main screen goes blank.
unrecoverable blank main screen.
2 functional screens.
i can supply an Xorg.0.log if needed. i've looked, but there's so much crud in such logs that i can't determine anything of consequence from them.
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