<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [bdw-u iommu] DMAR error -> GPU hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=89360#c49">Comment # 49</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [bdw-u iommu] DMAR error -> GPU hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=89360">bug 89360</a> from <a class="email" href="mailto:klondike@klondike.es" title="klondike <klondike@klondike.es>"> klondike</a> <pre>I guess we both are experiencing different bugs with similar symptoms. In my case at least, the UEFI display driver clashes with the Intel one resulting in the IOMMU violations. This seems to be some kind of firmware bug where the firmware isn't playing along with the MMU settings and Intel's driver. In yours, the cause may come from somewhere else, hopefully the devs can provide more guidance on what is triggering your case, but if sleep is involved chances are that firmware is somehow part of the issue.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>