[Bug 92943] New: [xf86-video-intel] causes backlight to turn off after sleep resume

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92943

            Bug ID: 92943
           Summary: [xf86-video-intel] causes backlight to turn off after
                    sleep resume
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: christian.heimanns at famheimanns.de
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 119648
  --> https://bugs.freedesktop.org/attachment.cgi?id=119648&action=edit
System Information (Manjaro on LENOVO L540)

Please see:
https://bugs.archlinux.org/task/45501?project=1&cat[0]=2&string=xf86-video-intel

Description:
After upgrading this package (Manajro package management) and after resuming
from sleep and logging back in (from lightdm) the backlight turns off.
Switching to a tty doesn't turn it back on. Running commands to increase the
brightness like using /sys/class/backlight/intel_backlight/brightness do not
help. I know it's just the backlight because if I shine a light on the screen I
can make out features and run commands in a terminal.


Additional info:
* Upgrade from 2.99.917-5 to 1:2.99.917+364+gb24e758-1


Steps to reproduce:
* Upgrade xf86-video-intel

Downgrading to 2.99.917-5 fixed it again

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