<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [HSW]i915 does 2s long DP-link-reset (backlight off) during modeset instead of re-using SimpleFB, stacktrace with i915.fastboot=1" href="https://bugs.freedesktop.org/show_bug.cgi?id=91845#c17">Comment # 17</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [HSW]i915 does 2s long DP-link-reset (backlight off) during modeset instead of re-using SimpleFB, stacktrace with i915.fastboot=1" href="https://bugs.freedesktop.org/show_bug.cgi?id=91845">bug 91845</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>The modeset is slow due to long panel power delays declared in the VBT. [ 0.568400] [drm:intel_pps_dump_state] cur t1_t3 0 t8 0 t9 0 t10 500 t11_t12 6000 [ 0.568402] [drm:intel_pps_dump_state] vbt t1_t3 3000 t8 1000 t9 12000 t10 500 t11_t12 6000 [ 0.568404] [drm:intel_dp_init_panel_power_sequencer] panel power up delay 300, power down delay 50, power cycle delay 600 [ 0.568406] [drm:intel_dp_init_panel_power_sequencer] backlight on delay 100, off delay 1200 The backlight off delay in particular is 1.2 seconds. Not much we can do about that.</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>