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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL][bisected] Screen regularly returns from power save mode"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99578#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL][bisected] Screen regularly returns from power save mode"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99578">bug 99578</a>
from <span class="vcard"><a class="email" href="mailto:ps@pks.im" title="Patrick Steinhardt <ps@pks.im>"> <span class="fn">Patrick Steinhardt</span></a>
</span></b>
<pre>No, I cannot actually reproduce the problem when instead including
`skl_dmc_ver1.bin`. But actually, it is not being loaded by the kernel in
v4.9.8:
```
[ 0.531932] [drm] Initialized
[ 0.532336] [drm] Memory usable by graphics device = 4096M
[ 0.532338] [drm] VT-d active for gfx access
[ 0.537328] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 0.537330] [drm] Driver supports precise vblank timestamp query.
[ 0.542846] i915 0000:00:02.0: Direct firmware load for
i915/skl_dmc_ver1_26.bin failed with error -2
[ 0.542850] i915 0000:00:02.0: Failed to load DMC firmware
[<a href="https://01.org/linuxgraphics/intel-linux-graphics-firmwares">https://01.org/linuxgraphics/intel-linux-graphics-firmwares</a>], disabling
runtime power management.
[ 0.543002] [drm] Disabling framebuffer compression (FBC) to prevent screen
flicker with VT-d enabled
[ 0.545718] [drm] GuC firmware load skipped
[ 0.606362] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 0.606505] input: Video Bus as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input3
[ 0.606526] [drm] Initialized i915 1.6.0 20160919 for 0000:00:02.0 on minor
0
```
Other than the above, dmesg output has not really changed. So runtime power
management is disabled, but the screen does not change back on.</pre>
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