<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Kernel DRM/i915 init sends eDP panel into self-test loop" href="https://bugs.freedesktop.org/show_bug.cgi?id=94338#c16">Comment # 16</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Kernel DRM/i915 init sends eDP panel into self-test loop" href="https://bugs.freedesktop.org/show_bug.cgi?id=94338">bug 94338</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>(In reply to Ville Syrjala from <a href="show_bug.cgi?id=94338#c13">comment #13</a>) > OK. So now the question becomes is the EDID failure expected, and if so how > are we actually supposed to fine the timings for the panel in the VBT. At > least the panel type in block 40 seems bogus. > > The spec says: > > "Panel Type > This field specifies the LFP panel index for the LFP panel present in the > platform. > Note: This field is deprecated and to be obsoleted. It is recommended to use > the Panel Type from the Display Device data structure of the corresponding > LFP display." > > but there is no panel type in the aforementioned structure in block 2. > > Jani, did we ever find out what this note really means? Just to answer myself here, I found something nice in Opregion that might help. If there's a chance of retesting with this particular machine, I'd rather like to know the results with this included: commit a05628195a0d9f3173dd9aa76f482aef692e46ee Author: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>> Date: Mon Apr 11 10:23:51 2016 +0300 drm/i915: Get panel_type from OpRegion panel details</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>