<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [Regression BDW] backlight flickering/display artifacting on Broadwell integrated graphics with 4.12-rc1" href="https://bugs.freedesktop.org/show_bug.cgi?id=101111#c25">Comment # 25</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [Regression BDW] backlight flickering/display artifacting on Broadwell integrated graphics with 4.12-rc1" href="https://bugs.freedesktop.org/show_bug.cgi?id=101111">bug 101111</a> from <a class="email" href="mailto:clinton.a.taylor@intel.com" title="Clinton Taylor <clinton.a.taylor@intel.com>"> Clinton Taylor</a> <pre>After examining the VBT file the most likely difference between panel type #14 and Panel type #0 is the backlight PWM frequency. Panel #14 has pwm frequency defined at 200 Hz and Panel #0 has a frequency of 10000 Hz. The flicker most likely observed by the user is backlight induced. Other differences are DRRS mode and some panel power sequence differences. Neither should cause a flicker after boot.</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>