<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Radiant P845 does not have LVDS, only VGA" href="https://bugs.freedesktop.org/show_bug.cgi?id=105468#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Radiant P845 does not have LVDS, only VGA" href="https://bugs.freedesktop.org/show_bug.cgi?id=105468">bug 105468</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 Rodrigo Vivi from <a href="show_bug.cgi?id=105468#c4">comment #4</a>) > VBT is there... > Maybe you don't have the debugfs configured and mounted? > [ 6.084841] [drm:intel_bios_init] VBT signature "$VBT MONTARA-GM ", > BDB version 114 Old platforms don't have opregion, so our debugfs based VBT dumper doesn't work. One needs to use intel_bios_dumper from intel-gpu-tools. We should probably fix the debugfs code to dtrt on these platforms as well... > > But yeap, something odd with the VBT there: > [ 6.084883] [drm:intel_opregion_get_panel_type] Failed to get panel > details from OpRegion (-19) > > What is strangest is that LVDS detection not only comes from VBT, but also > is detected as connected later. The lack of opregion explains that too I believe. Although the logic is quite convoluted so you have to read the code rather carefully to see it.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>