<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_CLOSED bz_closed" title="CLOSED NOTOURBUG - Kernel DRM/i915 init sends eDP panel into self-test loop" href="https://bugs.freedesktop.org/show_bug.cgi?id=94338#c43">Comment # 43</a> on <a class="bz_bug_link bz_status_CLOSED bz_closed" title="CLOSED NOTOURBUG - 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:francesco.simula@roma1.infn.it" title="Francesco Simula <francesco.simula@roma1.infn.it>"> Francesco Simula</a> <pre>(In reply to Clinton Taylor from <a href="show_bug.cgi?id=94338#c42">comment #42</a>) > The correct solution for this issue is to set panel_type=0 from <a href="show_bug.cgi?id=94338#c21">comment #21</a> > or the attached patch. The BIOS is giving the driver the incorrect > information and you will need to force the driver to use panel_type 0. Is there a way to set this "panel_type=0" by adding to the GRUB kernel line some option for the i915 module? I see that here (Fedora 28, kernel 4.17.19-200) the i915 module has "panel" in the following options: - panel_ignore_lid:Override lid status (0=autodetect, 1=autodetect disabled [default], -1=force lid closed, -2=force lid open) (int) - panel_use_ssc:Use Spread Spectrum Clock with panels [LVDS/eDP] (default: auto from VBT) (int) - vbt_sdvo_panel_type:Override/Ignore selection of SDVO panel mode in the VBT (-2=ignore, -1=auto [default], index in VBT BIOS table) (int) Is "panel_type" one of these?</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> </ul> </body> </html>