<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> <o:p> </o:p> We are having a problem using Xorg as an X host for an application we test.<o:p></o:p> <o:p> </o:p> 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.<o:p></o:p> <o:p> </o:p> 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.<o:p></o:p> <o:p> </o:p> 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.<o:p></o:p> <o:p> </o:p> 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.<o:p></o:p> <o:p> </o:p> <o:p> </o:p> 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.<o:p></o:p> <o:p> </o:p> 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.<o:p></o:p> <o:p> </o:p> Thanks!<o:p></o:p> <o:p> </o:p> Backtrace:<o:p></o:p> 0: Xephyr (xorg_backtrace+0x26) [0x57f7c6]<o:p></o:p> 1: Xephyr (0x400000+0x18307a) [0x58307a]<o:p></o:p> 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f6a0f1d8000+0x36420) [0x7f6a0f20e420]<o:p></o:p> 3: Xephyr (0x400000+0x4c014) [0x44c014]<o:p></o:p> 4: Xephyr (ProcessWorkQueue+0x21) [0x44de51]<o:p></o:p> 5: Xephyr (WaitForSomething+0x65) [0x57ca75] <o:p></o:p> 6: Xephyr (0x400000+0x49a12) [0x449a12] <o:p></o:p> 7: Xephyr (0x400000+0x1de7e) [0x41de7e] <o:p></o:p> 8: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f6a0f1f930d] <o:p></o:p> 9: Xephyr (0x400000+0x1e16d) [0x41e16d] <o:p></o:p> Segmentation fault at address 0x10<o:p></o:p> <o:p> </o:p> Caught signal 11 (Segmentation fault). Server aborting<o:p></o:p> /home/bday/bin/dside: line 3: 2328 Aborted Xephyr :$1 -ac -br -screen 1280x1024x8<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [ 12.202] <o:p></o:p> X.Org X Server 1.10.4<o:p></o:p> Release Date: 2011-08-19<o:p></o:p> [ 12.202] X Protocol Version 11, Revision 0<o:p></o:p> [ 12.202] Build Operating System: Linux 2.6.24-29-server x86_64 Ubuntu<o:p></o:p> [ 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<o:p></o:p> [ 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<o:p></o:p> [ 12.202] Build Date: 29 September 2011 02:45:13AM<o:p></o:p> [ 12.202] xorg-server 2:1.10.4-1ubuntu4 (For technical support please see http://www.ubuntu.com/support) <o:p></o:p> [ 12.202] Current version of pixman: 0.22.2<o:p></o:p> [ 12.202] Before reporting problems, check http://wiki.x.org<o:p></o:p> to make sure that you have the latest version.<o:p></o:p> [ 12.202] Markers: (--) probed, (**) from config file, (==) default setting,<o:p></o:p> (++) from command line, (!!) notice, (II) informational,<o:p></o:p> (WW) warning, (EE) error, (NI) not implemented, (??) unknown.<o:p></o:p> [ 12.202] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Jul 27 10:59:41 2012<o:p></o:p> [ 12.202] (==) Using config file: "/etc/X11/xorg.conf"<o:p></o:p> [ 12.202] (==) Using system config directory "/usr/share/X11/xorg.conf.d"<o:p></o:p> [ 12.202] (==) No Layout section. Using the first Screen section.<o:p></o:p> [ 12.202] (**) |-->Screen "Default Screen" (0)<o:p></o:p> [ 12.202] (**) | |-->Monitor "<default monitor>"<o:p></o:p> [ 12.202] (==) No device specified for screen "Default Screen".<o:p></o:p> Using the first device section listed.<o:p></o:p> [ 12.202] (**) | |-->Device "Default Device"<o:p></o:p> [ 12.202] (==) No monitor specified for screen "Default Screen".<o:p></o:p> Using a default monitor configuration.<o:p></o:p> [ 12.202] (==) Automatically adding devices<o:p></o:p> [ 12.202] (==) Automatically enabling devices<o:p></o:p> [ 12.202] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.<o:p></o:p> [ 12.202] Entry deleted from font path.<o:p></o:p> [ 12.202] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.<o:p></o:p> [ 12.202] Entry deleted from font path.<o:p></o:p> [ 12.202] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.<o:p></o:p> [ 12.202] Entry deleted from font path.<o:p></o:p> [ 12.202] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.<o:p></o:p> [ 12.202] Entry deleted from font path.<o:p></o:p> [ 12.202] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.<o:p></o:p> [ 12.202] Entry deleted from font path.<o:p></o:p> [ 12.202] (==) FontPath set to:<o:p></o:p> /usr/share/fonts/X11/misc,<o:p></o:p> /usr/share/fonts/X11/Type1,<o:p></o:p> /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType,<o:p></o:p> built-ins<o:p></o:p> [ 12.202] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"<o:p></o:p> <o:p> </o:p> -----------------------------------------------------------------------<o:p></o:p> Bernie<o:p></o:p> <o:p> </o:p> </div> </body> </html>