Don't you hate inaccurate bug titles? Some further poking round has determined that the it's not the vncviewer that causes the problem but the xdpyinfo used to see of the server started. To reproduce the issue it was sufficient for me to use:
$ Xephyr -host-cursor :20 & $ xdpyinfo -display :20 ... visual: visual id: 0x51 class: TrueColor depth: 32 planes available colormap entries: 256 per subfield red, green, blue masks: 0xff0000, 0xff00, 0xff significant bits in color specification: 8 bits Backtrace: 0: Xephyr (xorg_backtrace+0x28) [0x57ebb8] 1: Xephyr (0x400000+0x1827cd) [0x5827cd] 2: /lib/libpthread.so.0 (0x7f4e82fda000+0xf8f0) [0x7f4e82fe98f0] Segmentation fault at address (nil) -- NULL deref in __restore_rt when attempting to start vncviewer https://bugs.launchpad.net/bugs/596328 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in ubuntu. _______________________________________________ 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