<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [SNB rc6] drop MMIO writes leading to GPU hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=50619#c32">Comment # 32</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [SNB rc6] drop MMIO writes leading to GPU hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=50619">bug 50619</a> from <a class="email" href="mailto:mattst88@gmail.com" title="Matt Turner <mattst88@gmail.com>"> Matt Turner</a> <pre>(In reply to <a href="show_bug.cgi?id=50619#c30">comment #30</a>) > Hello all, I used to see very similar behaviour on my Sandy Bridge box. > Interestingly I'm also using an Asrock Board (H67M-GE). That indicates that > it might be a hardware issue. I flashed the latest BIOS version provided bei > Asrock (V 2.10, used to have 1.40 or 1.50 before, don't remember exactly) > and the issue went away for me, hasn't ever re-appeared since. > > If I remember correctly, the BIOS changelog mentioned something about fixing > the voltage settings of the GPU for the change to version 1.60. Asrock's > documentation is rather poor unfortunately, but searching the web for > "h67m-ge igpu voltage" yields several hits with descriptions of the BIOS > update: > "Modify default setting for IGPU voltage." > > As the bug seems to appear only with RC6 enabled there might be a connection > here. > If there's no new BIOS available for other boards, manually changing IGPU in > the BIOS/UEFI might also work around the issue maybe. > > Maybe that helps someone. > > Regards, > Stefan Good call! ASRock's website doesn't appear to have direct links to older BIOS versions, but if you guess the links, and it turns up these versions: <a href="http://download.asrock.com/bios/1155/H67M(1.60)WIN.zip">http://download.asrock.com/bios/1155/H67M(1.60)WIN.zip</a> <a href="http://download.asrock.com/bios/1155/H67M(1.70)WIN.zip">http://download.asrock.com/bios/1155/H67M(1.70)WIN.zip</a> <a href="http://download.asrock.com/bios/1155/H67M(1.80)WIN.zip">http://download.asrock.com/bios/1155/H67M(1.80)WIN.zip</a> So if someone has an older revision B2 chipset they can try these versions. I RMA'd my board (given that it /was/ recalled because of the SATA issues) and got a new B3 chipset that supports Ivy Bridge and has BIOS v2.10. No more rc6 failures with this board.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>