<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_CLOSED bz_closed" title="CLOSED FIXED - [bdw-u iommu] DMAR error -> GPU hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=89360#c98">Comment # 98</a> on <a class="bz_bug_link bz_status_CLOSED bz_closed" title="CLOSED FIXED - [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:corsac@debian.org" title="Yves-Alexis <corsac@debian.org>"> Yves-Alexis</a> <pre>(In reply to Lakshmi from <a href="show_bug.cgi?id=89360#c96">comment #96</a>) > Workaround for gpu hangs that comes with DMAR ERROR is to add > intel_iommu=igfx_off kernel option. Hi Lakshmi, we know about igfx_off since a long time, but it's not a fix, it's a workaround. We were told the bug was *fixed* in recent kernels (4.18+), but it doesn't seem to be the case, at least on Broadwell. > Closing this bug, as the original issue is resolved with a work around fix. I have to admit I'm disappointed by this. Not surprised though, I was kind-of expecting this, it's just took quite a lot of time to finally admit there would be no software fix. I was told the same for my i7-640LM, is there a chance DMAR will one day work fine with iGPU or should be enforce igfx_off by default in the Linux kernel?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>