The segfault occurs because Xephyr's attempt to bgfill its client-facing root window writes past the end of the window's image data buffer.
The write fails because Xephyr's hostx_screen_init() function is requesting an image data buffer which is too small. The image data buffer is too small because the calculation of bytes_per_line conflicts with the calculation of the screen's bits-per- pixel. Finally, Ajax supplied a patch six months ago that, when rebased, fixes the problem: http://patchwork.freedesktop.org/patch/1327/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/635523 Title: Xephyr crashed with SIGSEGV -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
