<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [snb pch eDP regression] Screen sometimes remains black after mode change - old fast & narrow link is more stable" href="https://bugs.freedesktop.org/show_bug.cgi?id=65757#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [snb pch eDP regression] Screen sometimes remains black after mode change - old fast & narrow link is more stable" href="https://bugs.freedesktop.org/show_bug.cgi?id=65757">bug 65757</a> from <a class="email" href="mailto:eich@pdx.freedesktop.org" title="Egbert Eich <eich@pdx.freedesktop.org>"> Egbert Eich</a> <pre>(In reply to <a href="show_bug.cgi?id=65757#c4">comment #4</a>) > Quick thing to check on latest drm-intel-nightly, specifically > > commit 8664281b64c457705db72fc60143d03827e75ca9 > Author: Paulo Zanoni <<a href="mailto:paulo.r.zanoni@intel.com">paulo.r.zanoni@intel.com</a>> > Date: Fri Apr 12 17:57:57 2013 -0300 > > drm/i915: report Gen5+ CPU and PCH FIFO underruns Will do that. > > Do the fifo underrun reports fire up? > > Also, as discussed in the meeting can you please test what happens when you > set the panel to eDP? Without that we also set up the HDMI connector, and > the i2c probing over HDMI is known to kill some eDP panels ... When setting the panel eDP it will work: reason is that the bogus VBT eDP tables in the BIOS will mark the panel 1 lane and 18bpp, thus the frequency low enough that only a single lane is used. I will however disable the HDMI connector setup and the I2C probing on the eDP connector hacking the driver and see if this makes a difference.</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> </ul> </body> </html>