http://bugs.cinelerra.org/show_bug.cgi?id=534

           Summary: left buttons in compositor freeze the window
           Product: Cinelerra
           Version: 2.1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: Medium
         Component: User Interface
        AssignedTo: [email protected]
        ReportedBy: [email protected]


the left side buttons in the compositor (mask, projector, camera ...) randomly
cause the compositor window to lock up. The main window is still usable (for a
time), the work can be saved.



Reproducible: Always

Steps to Reproduce:
start cinelerra and click on the mentioned buttons until it locks up.
Sometimes this happens after the 1st or 2nd button you click, sometimes takes
longer, but always happens.

Cinelerra does not report any errors on the commandline.

Actual Results:  
lock up

Expected Results:  
no lock up

The version I use is svn20080716 from debian-multimedia.org (I have debian
lenny/sid with selfcompiled 2.6.28 kernel).
- xorg 7.3
- libx11 1.1.5
- nvidia 180.22 (with 8800gts g80)

Cinelerra does not report any errors, also the gdb backtrace of the threads
doesn't show anything suspicious (to me). I can upload it somewhere if you
want, but has no debugging symbols.
Compiling from git is not possible since it demands very old (partly renamed)
libs and automake1.8, which is not availabe in lenny anymore.

I have tried a patch for xcb-xlib (assert replace) because I found a similar
issue on the net with this patch but problems still persist. I have not tried
xorg without xcb support (and won't).


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