I can confirm that this bug is still present in the latest release of Lucid ( Linux aleph1 2.6.38-8-generic #42~lucid1-Ubuntu SMP Mon Apr 11 13:45:06 UTC 2011 x86_64 GNU/Linux ).
Trying to capture video from a Firefox 4.0.1 window -- just a Gmail session in this case -- results in an error similar to the above after pressing the "record" button : jdb2@aleph1 ~/screencap $ xvidcap --fps 30000/1001 --sf --auto --file cap%0.9.ppm --gui yes --window 0x580006c The program 'xvidcap' received an X Window System error. This probably reflects a bug in the program. The error was 'BadMatch (invalid parameter attributes)'. (Details: serial 2054 error_code 8 request_code 139 minor_code 4) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) Debugging output is attached. ** Attachment added: "Output of 'gdb /usr/bin/xvidcap 2>&1 | tee gdb-xvidcap2.txt'" https://bugs.launchpad.net/ubuntu/+source/xvidcap/+bug/708332/+attachment/2148810/+files/gdb-xvidcap2.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/708332 Title: Xvidcap exits with "BadMatch" error -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs