<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [IVB CPU eDP] local flat panel stays blank, workaround: intel_iommu=igfx_off" href="https://bugs.freedesktop.org/show_bug.cgi?id=48652#c114">Comment # 114</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [IVB CPU eDP] local flat panel stays blank, workaround: intel_iommu=igfx_off" href="https://bugs.freedesktop.org/show_bug.cgi?id=48652">bug 48652</a> from <a class="email" href="mailto:imre.deak@gmail.com" title="Imre Deak <imre.deak@gmail.com>"> Imre Deak</a> <pre>Created <a href="attachment.cgi?id=82344" name="attach_82344" title="disable sg compaction">attachment 82344</a> <a href="attachment.cgi?id=82344&action=edit" title="disable sg compaction">[details]</a> <a href='page.cgi?id=splinter.html&bug=48652&attachment=82344'>[review]</a> disable sg compaction > (In reply to <a href="show_bug.cgi?id=48652#c111">comment #111</a>) > > yes, intel_iommu=igfx_off helps too. Thanks! > > Ok, that's proof that something _really_ fishy is going on here. Big WTF > moment ... Imre do you have any ideas what this could be? Seen anything like > this when you've done the sg conversion? No, I haven't tested vt-d ... But yeah, it may be similar to the swiotlb limitation. Oleksij could you try if the attached patch fixes the problem? I can take a closer look tomorrow.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>