Bug#833508: xbacklight reports "No outputs have backlight property"
Package: xbacklight
Version: 1.2.1-1
Followup-For: Bug #833508
same problem here, came unexpectedly after settting brightness to zero,
then couldn't light up the screen. a reboot (I tried killing X but it
wouldn't launch again) put the screen at 100% and I was not able to
get it down with xbacklight - had to write the sys files so I could
keep using the laptop.
this is the last system update I did yesterday:
http://www.pastebin.ca/3705482
as you can see, there were no xorg or kernel-related updates (nor were
there in the previous update a week ago).
I can confirm that forcing it to use the "intel" driver via xorg.conf
(what Debianer <oz@bluemonk.de> suggested), makes it work again.
the relevant packages are:
# aptitude versions xserver-xorg-video-intel
Package xserver-xorg-video-intel:
p 2:2.21.15-2+b2 stable 500
p 2:2.99.917+git20160522-1~bpo8+1 jessie-backports 100
i 2:2.99.917+git20160706-1 testing,unstable 600
# aptitude versions xserver-xorg-core
Package xserver-xorg-core:
p A 2:1.16.4-1 stable 500
i A 2:1.18.4-1 testing,unstable 600
-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (600, 'testing'), (500, 'stable'), (400, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages xbacklight depends on:
ii libc6 2.23-4
ii libxcb-randr0 1.11.1-1.1
ii libxcb-util0 0.3.8-3
ii libxcb1 1.11.1-1.1
xbacklight recommends no packages.
xbacklight suggests no packages.
-- debconf-show failed
Reply to: