Here is the stack trace using the nv driver from the Xorg.0.log.old: === Backtrace: 0: /usr/X11R6/bin/X(xorg_backtrace+0x3b) [0x813518b] 1: /usr/X11R6/bin/X(xf86SigHandler+0x55) [0x80c7be5] 2: [0xb7ee9400] 3: /usr/X11R6/bin/X [0x80fa366] 4: /usr/lib/xorg/modules/drivers//nv_drv.so [0xb77ec5ac] 5: /usr/X11R6/bin/X [0x80e1b5b] 6: /usr/X11R6/bin/X [0x80e1d0a] 7: /usr/X11R6/bin/X(RRCrtcSet+0x13c) [0x816439c] 8: /usr/X11R6/bin/X(ProcRRSetScreenConfig+0x4e3) [0x8169e93] 9: /usr/X11R6/bin/X [0x8161fc5] 10: /usr/X11R6/bin/X(Dispatch+0x33f) [0x808d57f] 11: /usr/X11R6/bin/X(main+0x3bd) [0x80722ed] 12: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7ab6775] 13: /usr/X11R6/bin/X [0x80717a1] Saw signal 11. Server aborting. ===
Here is the stack trace using the nv driver from the Xorg.0.log.old: bin/X(xorg_ backtrace+ 0x3b) [0x813518b] bin/X(xf86SigHa ndler+0x55) [0x80c7be5] xorg/modules/ drivers/ /nv_drv. so [0xb77ec5ac] bin/X(RRCrtcSet +0x13c) [0x816439c] bin/X(ProcRRSet ScreenConfig+ 0x4e3) [0x8169e93] bin/X(Dispatch+ 0x33f) [0x808d57f] bin/X(main+ 0x3bd) [0x80722ed] i686/cmov/ libc.so. 6(__libc_ start_main+ 0xe5) [0xb7ab6775]
===
Backtrace:
0: /usr/X11R6/
1: /usr/X11R6/
2: [0xb7ee9400]
3: /usr/X11R6/bin/X [0x80fa366]
4: /usr/lib/
5: /usr/X11R6/bin/X [0x80e1b5b]
6: /usr/X11R6/bin/X [0x80e1d0a]
7: /usr/X11R6/
8: /usr/X11R6/
9: /usr/X11R6/bin/X [0x8161fc5]
10: /usr/X11R6/
11: /usr/X11R6/
12: /lib/tls/
13: /usr/X11R6/bin/X [0x80717a1]
Saw signal 11. Server aborting.
===