confirmed the segfault in lucid following the steps to reproduce (xvfb 2:1.7.6-2ubuntu7.10). I've also confirmed that the xvfb version i'm using in oneiric does not have this issue (xvfb 2:1.10.4-1ubuntu4.2)
in first terminal: raema@ubuntu:~$ Xvfb -ac :99 [dix] Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list! Backtrace: 0: Xvfb (xorg_backtrace+0x28) [0x558138] 1: Xvfb (0x400000+0x15bd4d) [0x55bd4d] 2: /lib/libpthread.so.0 (0x7f1a60519000+0xf8f0) [0x7f1a605288f0] 3: /lib/libc.so.6 (0x7f1a5f1f3000+0x83052) [0x7f1a5f276052] 4: Xvfb (0x400000+0xba96d) [0x4ba96d] 5: Xvfb (0x400000+0xbac88) [0x4bac88] 6: Xvfb (0x400000+0x10619c) [0x50619c] 7: Xvfb (0x400000+0xf697a) [0x4f697a] 8: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7f1a5f211c4d] 9: Xvfb (0x400000+0x1d389) [0x41d389] Segmentation fault at address (nil) Caught signal 11 (Segmentation fault). Server aborting raema@ubuntu:~$ in second terminal: raema@ubuntu:~$ DISPLAY=:99 xinput list XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":99.0" after 16 requests (15 known processed) with 0 events remaining. ** Changed in: xorg-server (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/933745 Title: Xvfb: any use of the XInput extension causes Xvfb to crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/933745/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs