<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL Bisected] eDP can not be lighted up after entering kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=89554#c20">Comment # 20</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL Bisected] eDP can not be lighted up after entering kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=89554">bug 89554</a> from <a class="email" href="mailto:sonika.jindal@intel.com" title="Sonika <sonika.jindal@intel.com>"> Sonika</a> <pre>Can you please also attach the dmesg with the working panel? This panel reports HBR2 as the max link rate in DPCD: [ 1.804801] [drm:intel_dp_get_dpcd] DPCD: 12 14 c4 41 00 00 01 c0 02 00 00 00 1f 0b 00 Also, the edp low vswing is selected based on one parameter in vbt VswingPreEmphasis Value which is a separate field other than the link parameters where it specifies the vswing and pre-emphasis level. Following is my bios info from dmesg logs: Intel Corporation Skylake Client platform/Skylake AIO DDR3L RVP10, BIOS SKLSE2P1.86C.B060.R01.1411140050 Please note that, the low_vswing_preemph value is set to 1 in my case. I don't have the vbt for this one to really see the value. But I added some logs and from there I see that this value is 1 which means default swing settings (400mv)</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>