GNU bug report logs - #76554
Laptop screen blank after kexec reboot

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Message #20 received at 76554 <at> debbugs.gnu.org (full text, mbox):

From: Evgeny Pisemsky <mail <at> pisemsky.site>
To: 76554 <at> debbugs.gnu.org
Cc: Ludovic Courtès <ludo <at> gnu.org>,
 Simon Streit <simon <at> netpanic.org>
Subject: Re: bug#76554: Laptop screen blank after kexec reboot
Date: Sat, 12 Apr 2025 17:29:44 +0300

Hi, in my case I can see something on the screen after reboot, but
very dark. This hints that the problem in a backlight, and it is so:

#+begin_example
cd /sys/class/backlight/intel_backlight/

cat brightness
0

cat max_brightness
4437

cat max_brightness > brightness
#+end_example

The last command (run from root) makes my screen light up again.

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