<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [HSW] Severe screen flickering on external monitor after i915.enable_psr=1" href="https://bugs.freedesktop.org/show_bug.cgi?id=94985#c13">Comment # 13</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [HSW] Severe screen flickering on external monitor after i915.enable_psr=1" href="https://bugs.freedesktop.org/show_bug.cgi?id=94985">bug 94985</a> from <a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> yann</a> <pre>(In reply to dnord from <a href="show_bug.cgi?id=94985#c12">comment #12</a>) > (In reply to Jani Saarinen from <a href="show_bug.cgi?id=94985#c9">comment #9</a>) > > Is this issue still seen with latest kernel? > > As on kernel 4.8.12 I still have this bug on my setup (Thinkpad T440p, > external monitor connected to VGA port). In my case it is triggered when two > following conditions are satisfied: > 1. i915.enable_psr=1 (current kernel default) > 2. Setting SATA link_power_management_policy to min_power (automatically set > by TLP when cable is disconnected) > When i915.enable_psr=2 bug is NOT happening. dnord, the following submitted patch <a href="https://patchwork.freedesktop.org/patch/127188/">https://patchwork.freedesktop.org/patch/127188/</a> is going to set psr by default because it's known to cause bugs -until we get proper fix. As a general rule, we really don't recommend setting any i915 options to enable or disable features.</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>