I commented out the XDrawLine() xlib calls and the lockups stopped. The code for XDrawLine doesn't look suspicious, and other screensavers using that call (like crystal) seem to be working okay, so it must be something with the way that braid is making the call. I verified that interaggregate also shows the same symptoms, which also uses XDrawLine().
It would be nice to have a simpler test case to demonstrate the problem, but the braid code is probably concise enough already. I'll go ahead and forward it upstream. ** Changed in: xscreensaver (Ubuntu) Sourcepackagename: xserver-xorg-video-intel => xscreensaver Status: Triaged => New ** Changed in: xserver-xorg-video-intel (Ubuntu) Sourcepackagename: xscreensaver => xserver-xorg-video-intel Status: New => Triaged ** Summary changed: - braid screensaver crashes system with compiz activated + braid and other screensavers lock up system when compiz activated [-intel, -nvidia] ** Bug watch added: Compiz Plugins / Config Bugs #961 http://bugs.opencompositing.org/show_bug.cgi?id=961 ** Also affects: xorg-server via http://bugs.opencompositing.org/show_bug.cgi?id=961 Importance: Unknown Status: Unknown -- braid and other screensavers lock up system when compiz activated [-intel, -nvidia] https://bugs.launchpad.net/bugs/101943 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs