We are having a problem using Xorg as an X host for an application we test.
I am pretty sure that this is a problem with X and not an nvidia issue as we have tried many drivers and a few Xorgs. With a given X the backtrace always starts at the same location regardless of the driver version loaded. If we back level X then our application can start and run. On current versions of X, X crashes; here I have used Xephyr because it is easier to gather data, but the X results are the same I think. Also we have tried this on both RedHat and Linux Mint. We could run a back leveled X for a while but I hope we can get a fix in a future release. Or better find that we can do something to make this work now. I have spent some time looking at other peoples attempts to figure out there own problems but have not found any information that is enlightening. Here is the back trace, I am sure this is not enough information but I guess it is a starting point. Please tell me what other information you need. This application runs in 8 bit color and calls fonts from a font server running on another box. All the setup, connecting font server and all goes fine, but when the application starts X goes. Thanks! Backtrace: 0: Xephyr (xorg_backtrace+0x26) [0x57f7c6] 1: Xephyr (0x400000+0x18307a) [0x58307a] 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f6a0f1d8000+0x36420) [0x7f6a0f20e420] 3: Xephyr (0x400000+0x4c014) [0x44c014] 4: Xephyr (ProcessWorkQueue+0x21) [0x44de51] 5: Xephyr (WaitForSomething+0x65) [0x57ca75] 6: Xephyr (0x400000+0x49a12) [0x449a12] 7: Xephyr (0x400000+0x1de7e) [0x41de7e] 8: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f6a0f1f930d] 9: Xephyr (0x400000+0x1e16d) [0x41e16d] Segmentation fault at address 0x10 Caught signal 11 (Segmentation fault). Server aborting /home/bday/bin/dside: line 3: 2328 Aborted Xephyr :$1 -ac -br -screen 1280x1024x8 [ 12.202] X.Org X Server 1.10.4 Release Date: 2011-08-19 [ 12.202] X Protocol Version 11, Revision 0 [ 12.202] Build Operating System: Linux 2.6.24-29-server x86_64 Ubuntu [ 12.202] Current Operating System: Linux elan 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 x86_64 [ 12.202] Kernel command line: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic root=UUID=092a4a05-f34e-4163-97d5-597829950989 ro quiet splash vt.handoff=7 [ 12.202] Build Date: 29 September 2011 02:45:13AM [ 12.202] xorg-server 2:1.10.4-1ubuntu4 (For technical support please see http://www.ubuntu.com/support) [ 12.202] Current version of pixman: 0.22.2 [ 12.202] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [ 12.202] Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 12.202] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Jul 27 10:59:41 2012 [ 12.202] (==) Using config file: "/etc/X11/xorg.conf" [ 12.202] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 12.202] (==) No Layout section. Using the first Screen section. [ 12.202] (**) |-->Screen "Default Screen" (0) [ 12.202] (**) | |-->Monitor "<default monitor>" [ 12.202] (==) No device specified for screen "Default Screen". Using the first device section listed. [ 12.202] (**) | |-->Device "Default Device" [ 12.202] (==) No monitor specified for screen "Default Screen". Using a default monitor configuration. [ 12.202] (==) Automatically adding devices [ 12.202] (==) Automatically enabling devices [ 12.202] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. [ 12.202] Entry deleted from font path. [ 12.202] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist. [ 12.202] Entry deleted from font path. [ 12.202] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist. [ 12.202] Entry deleted from font path. [ 12.202] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist. [ 12.202] Entry deleted from font path. [ 12.202] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist. [ 12.202] Entry deleted from font path. [ 12.202] (==) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/Type1, /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, built-ins [ 12.202] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/u sr/lib/xorg/modules" ----------------------------------------------------------------------- Bernie
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