I hit this on Ubuntu 12.04:
Backtrace: 0: Xvfb (xorg_backtrace+0x26) [0x7fdc495d4f76] 1: Xvfb (0x7fdc4946d000+0x16be1a) [0x7fdc495d8e1a] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fdc48ba9000+0xfcb0) [0x7fdc48bb8cb0] 3: /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (0x7fdc48922000+0xb934) [0x7fdc4892d934] 4: /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (0x7fdc48922000+0x14736) [0x7fdc48936736] 5: /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (0x7fdc48922000+0x13996) [0x7fdc48935996] 6: /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (0x7fdc48922000+0x41383) [0x7fdc48963383] 7: /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (0x7fdc48922000+0x36dcb) [0x7fdc48958dcb] 8: /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (pixman_image_composite32+0x498) [0x7fdc4892b488] 9: Xvfb (fbComposite+0x1d8) [0x7fdc4949de58] 10: Xvfb (0x7fdc4946d000+0xb75a4) [0x7fdc495245a4] 11: Xvfb (0x7fdc4946d000+0xaf364) [0x7fdc4951c364] 12: Xvfb (0x7fdc4946d000+0x113601) [0x7fdc49580601] 13: Xvfb (0x7fdc4946d000+0x2e3aa) [0x7fdc4949b3aa] 14: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7fdc47a3e76d] 15: Xvfb (0x7fdc4946d000+0x2e69d) [0x7fdc4949b69d] Segmentation fault at address 0x4 Caught signal 11 (Segmentation fault). Server aborting ^C [2]+ Exit 1 Xvfb :8 -screen 0 1024x768x8 Happens consistently when running my tests, it worked fine on the previous Ubuntu release. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/716578 Title: Xvfb segfaults To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/716578/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp