Bug 546260

Created attachment 377470 [details]
File: backtrace

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Still crashes on xlockmore-5.28-2.fc14.x86_64 - same line numbers in the traceback.

The critical piece of info here would be that I have two logical screens.

I believe the crash is because although init_juggle recognises the possibility of multiple screens and allocates them accordingly, it only initialises the data for the current screen.  So when draw_juggle tries to draw the other screen, the info is still blank:

(gdb) print *mi
$1 = {windowinfo = {display = 0xa42180, screenptr = 0xa56780, screen = 1, 
    real_screen = 1, num_screens = 2, max_screens = 2, window = 85983246, 
    width = 1600, height = 1200, flags = 8289, delta3d = 1.5, is_drawn = 1}, 
  screeninfo = 0xa5c498, runinfo = {pause = 0, delay = 10000, count = 200, 
    cycles = 1000, size = 1, ncolors = 64, saturation = 1, bitmap = 0x0}, 
  lockstruct = 0x7a0480}
(gdb) print *sp
$2 = {scale = 2.5, wander = 0x0, cx = 0, Gr = 0, head = 0x0, arm = {{{{x = 0, 
          y = 0}, {x = 0, y = 0}, {x = 0, y = 0}}, {{x = 0, y = 0}, {x = 0, 
          y = 0}, {x = 0, y = 0}}}, {{{x = 0, y = 0}, {x = 0, y = 0}, {x = 0, 
          y = 0}}, {{x = 0, y = 0}, {x = 0, y = 0}, {x = 0, y = 0}}}}, 
  pattern = 0x0, count = 0, num_balls = 0, begintime = 0, time = 1950980977, 
  objtypes = BALL, objects = 0x0}

I am updating xlockmore to the latest upstream version. Can you please test it (once it appears in the testing repository) to see if that fixes your bug.

xlockmore-5.31-1.fc14 has been submitted as an update for Fedora 14.
https://admin.fedoraproject.org/updates/xlockmore-5.31-1.fc14

Does not seem to be fixed in xlockmore-5.31-1.fc14, I'm afraid.

xlockmore-5.31-1.fc14 has been pushed to the Fedora 14 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update xlockmore'.  You can provide feedback for this update here: https://admin.fedoraproject.org/updates/xlockmore-5.31-1.fc14

xlockmore-5.31-1.fc14 has been pushed to the Fedora 14 stable repository.  If problems still persist, please make note of it in this bug report.

Updated to xlockmore-5.38-1.fc18. Cannot get it to crash with "xlock -mode juggle -nolock" with one or two monitors attached. Thanks for the report. Closing it again and hoping this time it is really fixed.