<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [BXT-P APL] Can't light on HDMI monitor if boot up without monitor connected" href="https://bugs.freedesktop.org/show_bug.cgi?id=92916#c14">Comment # 14</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [BXT-P APL] Can't light on HDMI monitor if boot up without monitor connected" href="https://bugs.freedesktop.org/show_bug.cgi?id=92916">bug 92916</a> from <a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> Imre Deak</a> <pre>(In reply to Jairo Miramontes from <a href="show_bug.cgi?id=92916#c13">comment #13</a>) > Created <a href="attachment.cgi?id=121319" name="attach_121319" title="(2)dmesg log with drm.debug=14 with a working setup, HDMI connected">attachment 121319</a> <a href="attachment.cgi?id=121319&action=edit" title="(2)dmesg log with drm.debug=14 with a working setup, HDMI connected">[details]</a> > (2)dmesg log with drm.debug=14 with a working setup, HDMI connected > > Excuse me, this dmesg does have the drm.debug=14 option on > Regards Thanks. It looks like you have the following routing: Host DDI0 <- LSPCON DP-HDMI converter chip on board <- HDMI connector The driver outputs a DP signal which is converted by LSPCON to HDMI. Since we don't have a support in the driver (yet) to configure the LSPCON chip this will only work if BIOS has done so already, but it seems that BIOS will not configure the chip if there isn't any display connected. LSPCON support is being added atm, so we need to revisit this ticket when that's done. Not sure what's the proper bugzilla status until then, I'm leaving this open for now.</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> </ul> </body> </html>