Created attachment 21696 [details] xorg.conf from the Radeon laptop With an xorg.conf that uses Xrandr 1.2 syntax to set up multiple displays on a laptop, if the external monitor (VGA) is configured "LeftOf" the internal (LVDS), X will crash on boot if the external monitor is not plugged in. This does not happen if the external monitor is "RightOf" the internal one -- in that case, things start up properly with a single display. This has been reproduced on two different computers, both running a fully-updated Fedora 10: one with an Intel graphics card (driver xorg-x11-drv-i810-2.5.0-4.fc10.i386) and one with a Radeon (driver xorg-x11-drv-ati-6.9.0-63.fc10.i386). I'll attach the xorg.conf from the Radeon computer and an xorg.log from when X crashed with the "LeftOf" configuration and no external monitor. With "LeftOf" changed to "RightOf", there is no crash.
Created attachment 21697 [details] Xorg.0.log from the Radeon computer showing the crash
Looks like a radeon bug.
can you get a proper backtrace with gdb?
Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.
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