<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#c41">Comment # 41</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:brot+bfdo@minad.de" title="Michael Groh <brot+bfdo@minad.de>"> Michael Groh</a> <pre>Hello everyone, First of all, sorry i forgot to add the comment to the file. I think am also hitting this bug, i think. The system is a Lenovo ThinkPad X250 - Intel(R) Core(TM) i5-5200U and the HD Graphics 5500. Since i started using the IOMMU i have been getting hangs and also some X restarts. This is what dmesg says after the fact: [ 1409.513438] DMAR: DRHD: handling fault status reg 3 [ 1409.513451] DMAR: [DMA Read] Request device [00:02.0] fault addr f5995000 [fault reason 05] PTE Write access is not set [ 1409.513468] DMAR: DRHD: handling fault status reg 3 [ 1409.513471] DMAR: [DMA Write] Request device [00:02.0] fault addr f5968000 [fault reason 23] Unknown [ 1418.830396] [drm] GPU HANG: ecode 8:0:0x85dffffb, in kwin_x11 [2191], reason: Hang on render ring, action: reset [ 1418.830407] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [ 1418.830409] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 1418.830410] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [ 1418.830412] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [ 1418.830413] [drm] GPU crash dump saved to /sys/class/drm/card0/error I will upload said crash dump here. If i can provide you with any more debug-logs or should test something, i would be glad to help. Thanks, Michael</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>