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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - PSR causes graphical glitches on Dell XPS 15 9570"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111701#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - PSR causes graphical glitches on Dell XPS 15 9570"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111701">bug 111701</a>
from <span class="vcard"><a class="email" href="mailto:sultan@kerneltoast.com" title="Sultan Alsawaf <sultan@kerneltoast.com>"> <span class="fn">Sultan Alsawaf</span></a>
</span></b>
<pre>Hi Jose. Forcing PSR1 fixes the glitches.
root@sultan-box:/home/sultan# more /sys/kernel/debug/dri/0/i915_edp_psr_status
Sink support: yes [0x03]
PSR mode: PSR2 enabled
Source PSR ctl: enabled [0xc0000216]
Source PSR status: DEEP_SLEEP [0x80080130]
Busy frontbuffer bits: 0x00000000
Frame: PSR2 SU blocks:
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
root@sultan-box:/home/sultan# echo 0x3 >
/sys/kernel/debug/dri/0/i915_edp_psr_debug
root@sultan-box:/home/sultan# more /sys/kernel/debug/dri/0/i915_edp_psr_status
Sink support: yes [0x03]
PSR mode: PSR1 enabled
Source PSR ctl: enabled [0x81f00e26]
Source PSR status: SRDOFFACK [0xc4040016]
Busy frontbuffer bits: 0x00000000
root@sultan-box:/home/sultan#</pre>
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