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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [KBL/SKL] Screen does not wake after screen blank"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102224#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [KBL/SKL] Screen does not wake after screen blank"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102224">bug 102224</a>
from <span class="vcard"><a class="email" href="mailto:arkh4mkn1ght@gmail.com" title="arkh4mkn1ght@gmail.com">arkh4mkn1ght@gmail.com</a>
</span></b>
<pre>UPDATE:
It seems the issue has disappeared! I modified 3 i915 module options and after
3 days of testing including leaving the laptop on overnight i haven't
experience the problems again. Battery consumption has been great, around
2.5 watts when idle.
The module options modified were:
enable_guc_loading = "1"
enable_guc_submission= "1"
disable_power_well = "0"
for the guc module options make sure you have installed the latest firmware
from <a href="https://01.org/linuxgraphics/downloads/firmware">https://01.org/linuxgraphics/downloads/firmware</a>. In your dmesg after
booting you will see these messages:
[ 2.303462] Setting dangerous option enable_guc_loading - tainting kernel
[ 2.303463] Setting dangerous option enable_guc_submission - tainting kernel
[ 2.340111] [drm] GuC submission enabled (firmware i915/skl_guc_ver6_1.bin
[version 6.1])
These are the GRUB boot options used:
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.12.4
root=UUID=d9310d7b-9422-463c-89ec-e1431caba3c4 ro nosplash quiet noiswmd
i915.enable_rc6=1 i915.enable_psr=1 i915.disable_power_well=0
i915.enable_guc_loading=1 i915.enable_guc_submission=1 i915.enable_fbc=1
pcie_aspm=force resume=/dev/nvme0n1p6
Again this has worked on a VAIO Z Flip
model name : Intel(R) Core(TM) i7-6567U CPU @ 3.30GHz
Kernel:
[root@localhost]# uname -a
Linux localhost.localdomain 4.12.4 #1 SMP Sat Aug 5 11:00:30 UYT 2017 x86_64
x86_64 x86_64 GNU/Linux
Please give it a try and let me know if it fixes your issues</pre>
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