I just installed a Sapphire Radeon X700Pro AGP card and tried to make a new
configuration file by running Xorg -configure. As a result the server caught
signal 11.

The Xorg.0.log contains following:
----------------------------
X Window System Version 6.9.0 (Debian 6.9.0.dfsg.1-3 20060110012652 David Nusino
w <dnusinow@debian.org>)
Release Date: 21 December 2005
X Protocol Version 11, Revision 0, Release 6.9
Build Operating System: Linux 2.6.15-1-686 i686 [ELF] 
Current Operating System: Linux maestro 2.6.15 #1 SMP PREEMPT Tue Jan 3 16:14:42
 EET 2006 i686
Build Date: 09 January 2006
        Before reporting problems, check http://wiki.X.Org
        to make sure that you have the latest version.
Module Loader present
OS Kernel: Linux version 2.6.15 (root@maestro) (gcc version 4.0.3 20051201 (prer
elease) (Debian 4.0.2-5)) #1 SMP PREEMPT Tue Jan 3 16:14:42 EET 2006 
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Fri Jan 13 23:29:25 2006
(II) Open ACPI successful (/var/run/acpid.socket)
(II) Module ABI versions:
        X.Org ANSI C Emulation: 0.2
        X.Org Video Driver: 0.8
        X.Org XInput driver : 0.5
        X.Org Server Extension : 0.2
        X.Org Font Renderer : 0.4
(II) Loader running on linux
(II) LoadModule: "bitmap"
(II) Loading /usr/X11R6/lib/modules/fonts/libbitmap.so
(II) Module bitmap: vendor="X.Org Foundation"
        compiled for 6.9.0, module version = 1.0.0
        Module class: X.Org Font Renderer
        ABI class: X.Org Font Renderer, version 0.4
(II) Loading font Bitmap
(II) LoadModule: "pcidata"
(II) Loading /usr/X11R6/lib/modules/libpcidata.so
(II) Module pcidata: vendor="X.Org Foundation"
        compiled for 6.9.0, module version = 1.0.0
        ABI class: X.Org Video Driver, version 0.8
(--) using VT number 7

(II) PCI: PCI scan (all values are in hex)
(II) PCI: 00:00:0: chip 8086,2570 card 1043,80f2 rev 02 class 06,00,00 hdr 00
(II) PCI: 00:01:0: chip 8086,2571 card 0000,0000 rev 02 class 06,04,00 hdr 01
(II) PCI: 00:1d:0: chip 8086,24d2 card 1043,80a6 rev 02 class 0c,03,00 hdr 80
(II) PCI: 00:1d:1: chip 8086,24d4 card 1043,80a6 rev 02 class 0c,03,00 hdr 00
(II) PCI: 00:1d:2: chip 8086,24d7 card 1043,80a6 rev 02 class 0c,03,00 hdr 00
(II) PCI: 00:1d:3: chip 8086,24de card 1043,80a6 rev 02 class 0c,03,00 hdr 00
(II) PCI: 00:1d:7: chip 8086,24dd card 1043,80a6 rev 02 class 0c,03,20 hdr 00
(II) PCI: 00:1e:0: chip 8086,244e card 0000,0000 rev c2 class 06,04,00 hdr 01
(II) PCI: 00:1f:0: chip 8086,24d0 card 0000,0000 rev 02 class 06,01,00 hdr 80
(II) PCI: 00:1f:1: chip 8086,24db card 1043,80a6 rev 02 class 01,01,8a hdr 00
(II) PCI: 00:1f:2: chip 8086,24d1 card 1043,80a6 rev 02 class 01,01,8f hdr 00
(II) PCI: 00:1f:3: chip 8086,24d3 card 1043,80a6 rev 02 class 0c,05,00 hdr 00
(II) PCI: 01:00:0: chip 1002,5e4b card 174b,0650 rev 00 class 03,00,00 hdr 80
(II) PCI: 01:00:1: chip 1002,5e6b card 174b,0651 rev 00 class 03,80,00 hdr 00
(II) PCI: 02:05:0: chip 10b7,1700 card 1043,80eb rev 12 class 02,00,00 hdr 00
(II) PCI: 02:0d:0: chip 1412,1712 card 1412,d632 rev 02 class 04,01,00 hdr 00
(II) PCI: End of PCI scan
(II) Host-to-PCI bridge:
(II) Bus 0: bridge is at (0:0:0), (0,0,2), BCTRL: 0x0008 (VGA_EN is set)
(II) Bus 0 I/O range:
        [0] -1  0       0x00000000 - 0x0000ffff (0x10000) IX[B]
(II) Bus 0 non-prefetchable memory range:
        [0] -1  0       0x00000000 - 0xffffffff (0x0) MX[B]
(II) Bus 0 prefetchable memory range:
        [0] -1  0       0x00000000 - 0xffffffff (0x0) MX[B]
(II) PCI-to-PCI bridge:
(II) Bus 1: bridge is at (0:1:0), (0,1,1), BCTRL: 0x0008 (VGA_EN is set)
(II) Bus 1 I/O range:
        [0] -1  0       0x0000c000 - 0x0000cfff (0x1000) IX[B]
(II) Bus 1 non-prefetchable memory range:
        [0] -1  0       0xfe900000 - 0xfe9fffff (0x100000) MX[B]
(II) Bus 1 prefetchable memory range:
        [0] -1  0       0xd7f00000 - 0xf7efffff (0x20000000) MX[B]
(II) PCI-to-PCI bridge:
(II) Bus 2: bridge is at (0:30:0), (0,2,2), BCTRL: 0x0006 (VGA_EN is cleared)
(II) Bus 2 I/O range:
        [0] -1  0       0x0000d000 - 0x0000d0ff (0x100) IX[B]
        [1] -1  0       0x0000d400 - 0x0000d4ff (0x100) IX[B]
        [2] -1  0       0x0000d800 - 0x0000d8ff (0x100) IX[B]
        [3] -1  0       0x0000dc00 - 0x0000dcff (0x100) IX[B]
(II) Bus 2 non-prefetchable memory range:
        [0] -1  0       0xfea00000 - 0xfeafffff (0x100000) MX[B]
(II) PCI-to-ISA bridge:
(II) Bus -1: bridge is at (0:31:0), (0,-1,-1), BCTRL: 0x0008 (VGA_EN is set)
(--) PCI:*(1:0:0) ATI Technologies Inc RV410 [Radeon X700 Pro (PCIE)] rev 0, Mem
 @ 0xe0000000/28, 0xfe9f0000/16, I/O @ 0xc000/8, BIOS @ 0xfe9c0000/17
(--) PCI: (1:0:1) ATI Technologies Inc RV410 [Radeon X700 Pro (PCIE)] Secondary 
rev 0, Mem @ 0xfe9e0000/16

   *** If unresolved symbols were reported above, they might not
   *** be the reason for the server aborting.

Backtrace:
0: Xorg(xf86SigHandler+0x80) [0x8088d00]
1: [0xffffe420]
2: Xorg(xf86DriverlistFromCompile+0x28) [0x8080b58]
3: Xorg(DoConfigure+0x11) [0x8073b71]
4: Xorg(InitOutput+0x604) [0x8071954]
5: Xorg(main+0x231) [0x80d3e91]
6: /lib/tls/libc.so.6(__libc_start_main+0xd0) [0xb7e1bed0]
7: Xorg [0x8070131]

Fatal server error:
Caught signal 11.  Server aborting


Please consult the The X.Org Foundation support 
         at http://wiki.X.Org
 for help. 
Please also check the log file at "/var/log/Xorg.0.log" for additional informati
on.

---------------------------