I have faced the same thing on both Ubuntu 12.04 and 13.04 as well as on openSUSE 12.3 with darktable 1.2.2 and nvidia proprietary drivers (different versions: 304, 310) for GT430 card.
In my case systems froze completely so that I needed to reboot with the magic SysRQ keys or using the hard button. The garbage on the screen was quite the same, though I couldn't switch to the console to check it out. I would also like to add that in Ubuntu cases Xorg was glitching even after a reboot (after three or four of them, to be exact). The crash happens from time to time, with no dependency on the number of photos in the roll or on the style and type of edits made to the photos. I'm attaching an archive of two files made on the current Ubuntu 12.04 (as of 17.07.2013). - darktable.debug is what I was able to record with $ darktable -d all command - darktable.strace was made with $ starce -p [darktable pid] The commands were executed in the background until the system froze and had to be rebooted. Hope that this might help. P.S. As for the moment, I removed darktable to prevent running it. In case it will be needed to reproduce, I will be glad to install it again. ** Attachment added: "The archive of two files with debugging and strace records." https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/899669/+attachment/3740438/+files/darktable.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/899669 Title: Screen Corruption and crash after Gnome Shell login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/899669/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
