Subject: xlibmesa3: bzflag freezes up X completely at random times
Package: xlibmesa3
Version: 4.2.1-3
Severity: normal

Hello,

I have a somewhat difficult to reproduce bug, so I tried to gather more info before 
reporting.

While running bzflag (all versions) I experience lockups of my screen after random 
times. Sometimes it happens after seconds, sometimes after hours. Usually you can play 
for a long time. It is not possible to switch to another console anymore. The only way 
to get to the computer is through network (ssh). Killing bzflag or restarting the X 
server does not bring back the computer. The screen and keyboard stay unresponsive. 
Only way to bring back X is a reboot.

I am running debian testing, but it doesn't seem to be debian specific. (also reported 
to happen on Mandrake)

I have been debugging bzflag, and it seems that the main thread, which contain the 
graphics code stops at the crash at different places. I think this is because 
something asynchronous (opengl?) causes it to freeze up. It is probably not the sound 
thread, since this keeps running after the freeze.

People have seen the same behaviour with other linux games. I myself once with 
vegastrike.

I have a suspicion that it is caused by the opengl implementation on linux. (It also 
doesn't happen on windows)

There is a lengthy discussion about this and symptons of it on (warning: there are 
some side discussion about different bugs and issues):
http://bzbb.homelinux.org/viewtopic.php?t=105

And some on:
http://sourceforge.net/forum/forum.php?thread_id=780343&forum_id=9554

I am out of idea's to find out and fix myself what is causing this. I would be happy 
to search further if I can get some hints on how to do that.

Cheers,
Remco.


-- System Information
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux seesink 2.4.20 #1 Thu Jan 2 01:45:15 CET 2003 i686
Locale: LANG=C, LC_CTYPE=

Versions of packages xlibmesa3 depends on:
ii  debconf                      1.2.21      Debian configuration management sy
ii  libc6                        2.2.5-14.3  GNU C Library: Shared libraries an
ii  libstdc++2.10-glibc2.2       1:2.95.4-11 The GNU stdc++ library
ii  xlibs                        4.2.1-3     X Window System client libraries

My XF86Config-4 file:
### BEGIN DEBCONF SECTION
# XF86Config-4 (XFree86 server configuration file) generated by dexconf, the
# Debian X Configuration tool, using values from the debconf database.
#
# Edit this file with caution, and see the XF86Config-4 manual page.
# (Type "man XF86Config-4" at the shell prompt.)
#
# If you want your changes to this file preserved by dexconf, only make changes
# before the "### BEGIN DEBCONF SECTION" line above, and/or after the
# "### END DEBCONF SECTION" line below.
#
# To change things within the debconf section, run the command:
#   dpkg-reconfigure xserver-xfree86
# as root.  Also see "How do I add custom sections to a dexconf-generated
# XF86Config or XF86Config-4 file?" in /usr/share/doc/xfree86-common/FAQ.gz.

Section "Files"
        FontPath        "unix/:7100"                    # local font server
        # if the local font server has problems, we can fall back on these
        FontPath        "/usr/lib/X11/fonts/misc"
        FontPath        "/usr/lib/X11/fonts/cyrillic"
        FontPath        "/usr/lib/X11/fonts/100dpi/:unscaled"
        FontPath        "/usr/lib/X11/fonts/75dpi/:unscaled"
        FontPath        "/usr/lib/X11/fonts/Type1"
        FontPath        "/usr/lib/X11/fonts/Speedo"
        FontPath        "/usr/lib/X11/fonts/100dpi"
        FontPath        "/usr/lib/X11/fonts/75dpi"
EndSection

Section "Module"
        Load    "GLcore"
        Load    "bitmap"
        Load    "dbe"
        Load    "ddc"
        Load    "dri"
        Load    "extmod"
        Load    "freetype"
        Load    "glx"
        Load    "int10"
        Load    "record"
        Load    "speedo"
        Load    "type1"
        Load    "vbe"
EndSection

Section "InputDevice"
        Identifier      "Generic Keyboard"
        Driver          "keyboard"
        Option          "CoreKeyboard"
        Option          "XkbRules"      "xfree86"
        Option          "XkbModel"      "pc104"
        Option          "XkbLayout"     "us"
EndSection

Section "InputDevice"
        Identifier      "Configured Mouse"
        Driver          "mouse"
        Option          "CorePointer"
        Option          "Device"                "/dev/ttyS1"
        Option          "Protocol"              "IntelliMouse"
        Option          "ZAxisMapping"          "4 5"
EndSection

Section "InputDevice"
        Identifier      "Generic Mouse"
        Driver          "mouse"
        Option          "SendCoreEvents"        "true"
        Option          "Device"                "/dev/input/mice"
        Option          "Protocol"              "ImPS/2"
        Option          "ZAxisMapping"          "4 5"
EndSection

Section "Device"
        Identifier      "Generic Video Card"
        Driver          "tdfx"
EndSection

Section "Monitor"
        Identifier      "Generic Monitor"
        HorizSync       30-70
        VertRefresh     50-120
        Option          "DPMS"
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Device          "Generic Video Card"
        Monitor         "Generic Monitor"
        DefaultDepth    16
        SubSection "Display"
                Depth           1
                Modes           "1024x768" "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Depth           4
                Modes           "1024x768" "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Depth           8
                Modes           "1024x768" "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Depth           15
                Modes           "1024x768" "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Depth           16
                Modes           "1024x768" "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Depth           24
                Modes           "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          "Default Screen"
        InputDevice     "Generic Keyboard"
        InputDevice     "Configured Mouse"
        InputDevice     "Generic Mouse"
EndSection

Section "DRI"
        Mode    0666
EndSection

### END DEBCONF SECTION






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