I'm still not certain whether this is going to need a fix in compiz or in something mesa/libdrm/intel-ish, but I've gone ahead and filed the bug upstream with X.org at https://bugs.freedesktop.org/show_bug.cgi?id=23566 and flagged it to our Intel rep. The fact that it showed up after we upped mesa, and goes away after downgrading to 7.5 seems too suspicious for coincidence. (I'd like to hear if this holds true for others.)
** Bug watch added: freedesktop.org Bugzilla #23566 https://bugs.freedesktop.org/show_bug.cgi?id=23566 ** Also affects: xorg-server via https://bugs.freedesktop.org/show_bug.cgi?id=23566 Importance: Unknown Status: Unknown -- Uses 100% CPU with latest mesa/libdrm update https://bugs.launchpad.net/bugs/419264 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