<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [IVB/HSW]igt/kms_flip subcases sporadically cause *ERROR* uncleared pch fifo underrun on pch transcoder A" href="https://bugs.freedesktop.org/show_bug.cgi?id=85898#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [IVB/HSW]igt/kms_flip subcases sporadically cause *ERROR* uncleared pch fifo underrun on pch transcoder A" href="https://bugs.freedesktop.org/show_bug.cgi?id=85898">bug 85898</a> from <a class="email" href="mailto:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> Daniel Vetter</a> <pre>(In reply to Ville Syrjala from <a href="show_bug.cgi?id=85898#c4">comment #4</a>) > (In reply to Daniel Vetter from <a href="show_bug.cgi?id=85898#c3">comment #3</a>) > > I wonder whether we should tune down underrun warnings on the PCH, seems to > > happen why too often in random circumstances ... > > IIRC I saw something like this on my IVB, but only with the non-existing VGA > connector. I didn't post the patch since I couldn't be sure if it was just > specific to that machine. As I recall, the cure involved rearranging the PCH > underrun reporting disable/enable points a bit. I can see if I can still > reproduce it here and maybe resurrect that patch, or recreate it if I can't > find it anymore. Well we also have reports that the pch underruns at boot-up/takeover. So something is definitely still amiss and it should be easy to get a few tested-bys from reporters if you have a patch.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>