Bug#833508: xbacklight reports "No outputs have backlight property"

[Khurram Mahmood]

Package: xbacklight
Version: 1.2.1-1+b2
Followup-For: Bug #833508

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
 ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 9.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-6-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages xbacklight depends on:
ii  libc6  2.24-11+deb9u3
ii  libxcb-randr0  1.12-1
ii  libxcb-util0   0.3.8-3+b2
ii  libxcb11.12-1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information

Bug#833508: xbacklight reports "No outputs have backlight property"

[128]

However, this solution is not universal. It is only valid on systems where the 
display driver is intel.

On Wed, 5 Jul 2017 00:47:43 -0700 John Eikenberry  wrote:> The 
arch wiki has an alternative fix. They just suggest this in your xorg.conf.
> 
> Section "Device"
> Identifier  "Card0"
> Driver  "intel"
> Option  "Backlight"  "intel_backlight"
> EndSection
> 
> It fixed it for me.
> 
> For more go here and search for xbacklight.
> https://wiki.archlinux.org/index.php/Backlight
> 
> 

Bug#833508: Fwd: Bug#833508: xbacklight reports "No outputs have backlight property"

[Chris Lamb]

[Dropping owner@ from CC]

Dear Khurram,

I'm sorry to hear you are having problems with Debian.

I suggest you follow up with the X team; the Project Leader as a rule
does not interfere with the technical details of bugs :)

You can do this by writing to the bug number:

  833...@bugs.debian.org

I have CC'd this mail to there, so pressing "Reply All" should do the
trick.


Regards,

-- 
  ,''`.
 : :'  : Chris Lamb
 `. `'`  la...@debian.org / chris-lamb.co.uk
   `-

Bug#833508: xbacklight reports "No outputs have backlight property"

[Khurram Mahmood]

Package: xbacklight
Version: 1.2.1-1+b2
Followup-For: Bug #833508

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
 ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 9.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages xbacklight depends on:
ii  libc6  2.24-11+deb9u1
ii  libxcb-randr0  1.12-1
ii  libxcb-util0   0.3.8-3+b2
ii  libxcb11.12-1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information

Bug#833508: xbacklight reports "No outputs have backlight property"

[John Eikenberry]

The arch wiki has an alternative fix. They just suggest this in your xorg.conf.

Section "Device"
Identifier  "Card0"
Driver  "intel"
Option  "Backlight"  "intel_backlight"
EndSection

It fixed it for me.

For more go here and search for xbacklight.
https://wiki.archlinux.org/index.php/Backlight




signature.asc
Description: PGP signature

Bug#833508: xbacklight reports "No outputs have backlight property"

[Khurram Mahmood]

Package: xbacklight
Version: 1.2.1-1+b2
Followup-For: Bug #833508

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
 ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 9.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages xbacklight depends on:
ii  libc6  2.24-11+deb9u1
ii  libxcb-randr0  1.12-1
ii  libxcb-util0   0.3.8-3+b2
ii  libxcb11.12-1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information

Bug#833508: xbacklight reports "No outputs have backlight property"

[Khurram Mahmood]

Package: xbacklight
Version: 1.2.1-1+b2
Followup-For: Bug #833508

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
 ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-2-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  2.24-9
ii  libxcb-randr0  1.12-1
ii  libxcb-util0   0.3.8-3
ii  libxcb11.12-1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information

Bug#833508: xbacklight reports "No outputs have backlight property"

[Khurram Mahmood]

Package: xbacklight
Version: 1.2.1-1+b2
Followup-For: Bug #833508

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
 ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-2-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  2.24-9
ii  libxcb-randr0  1.12-1
ii  libxcb-util0   0.3.8-3
ii  libxcb11.12-1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information

Bug#833508: xbacklight reports "No outputs have backlight property"

[niky]

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  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-backports100 
i   2:2.99.917+git20160706-1testing,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,unstable600


-- 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  libxcb11.11.1-1.1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- debconf-show failed

Bug#833508: xbacklight reports "No outputs have backlight property"

[Debianer]

Package: xbacklight
Version: 1.2.1-1
Followup-For: Bug #833508

Dear Reporter,

I can confirm that xbacklight gives "No outputs have backlight property" when I 
changed from xserver-xorg-video-intel to the new xserver-xorg-core in Debian 
Sid. Your work-arounds in your opening work for me too, thanks.

When I roll-back to xserver-xorg-video-intel by using the following  xorg.conf 
...

Section "Device"
Identifier "Intel"
Driver "intel"
#   Option "AccelMethod" "uxa"
EndSection

... than xbacklight works again.

I have the xbacklight problem  with ...
ii  xserver-xorg-core   2:1.18.4-1 amd64  Xorg X 
server - core server

My Intel-GPU is:
# lspci -v -s 00:02.0
00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium 
Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 21) (prog-if 
00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Atom/Celeron/Pentium Processor 
x5-E8000/J3xxx/N3xxx Integrated Graphics Controller
Flags: bus master, fast devsel, latency 0, IRQ 197
Memory at 9000 (64-bit, non-prefetchable) [size=16M]
Memory at 8000 (64-bit, prefetchable) [size=256M]
I/O ports at 2000 [size=64]
[virtual] Expansion ROM at 000c [disabled] [size=128K]
Capabilities: [d0] Power Management version 2
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [b0] Vendor Specific Information: Len=07 
Kernel driver in use: i915
Kernel modules: i915

Kind regards

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.6.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.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  libxcb11.11.1-1.1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information

Bug#833508: xbacklight reports "No outputs have backlight property"

[Sebastien Delafond]

Package: xbacklight
Version: 1.2.1-1
Followup-For: Bug #833508

Dear Maintainer,

same problem here. I can manually write to
/sys/class/backlight/intel_backlight/brightness fine.

I use xserver-xorg-video-intel 2:2.99.917+git20160706-1.

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (500, 
'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.0-rc7-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/bash
Init: sysvinit (via /sbin/init)

Versions of packages xbacklight depends on:
ii  libc6  2.23-4
ii  libxcb-randr0  1.11.1-1
ii  libxcb-util0   0.3.8-3
ii  libxcb11.11.1-1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information

Bug#833508: xbacklight reports "No outputs have backlight property"

[gustavo panizzo (gfa)]

Package: xbacklight
Version: 1.2.1-1
Followup-For: Bug #833508

I have the same problem on 2 laptops, with different GPUs

Intel Corporation 3rd Gen Core processor Graphics Controller
Intel Corporation Broadwell-U Integrated Graphics (rev 09)

I think the problem started after this upgrade
upgrade xserver-xorg-video-intel:amd64 2:2.99.917+git20160522-1
2:2.99.917+git20160706-1

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (900, 'testing'), (300, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=UTF-8) (ignored: LC_ALL set to C.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
ii  libxcb-util0   0.3.8-3
ii  libxcb11.11.1-1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information

Bug#833508: xbacklight reports "No outputs have backlight property"

[Russell Stuart]

Package: xbacklight
Version: 1.2.1-1
Severity: important

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512

Dear Maintainer,

Problem:

  $ xbacklight --get
  No outputs have backlight property
  $ xbacklight --inc 20
  No outputs have backlight property
  $ xbacklight --get 20
  No outputs have backlight property

yada, yada - you get the idea.

But this works:

  xrandr --output eDP-1 --brightness 0.5

And this works:

  sudo sh -c "echo 100 >/sys/class/backlight/intel_backlight/brightness"

So there is no problem with the hardware, the kernel, or X.


- -- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.6.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.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
ii  libxcb-util0   0.3.8-3
ii  libxcb11.11.1-1

xbacklight recommends no packages.

xbacklight suggests no packages.

- -- no debconf information

[ 4.990] 
X.Org X Server 1.18.4
Release Date: 2016-07-19
[ 4.990] X Protocol Version 11, Revision 0
[ 4.990] Build Operating System: Linux 3.16.0-4-amd64 x86_64 Debian
[ 4.990] Current Operating System: Linux ras 4.6.0-1-amd64 #1 SMP Debian 
4.6.4-1 (2016-07-18) x86_64
[ 4.990] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.6.0-1-amd64 
root=/dev/nvme0n1p1 ro
[ 4.990] Build Date: 20 July 2016  05:14:41AM
[ 4.990] xorg-server 2:1.18.4-1 (http://www.debian.org/support) 
[ 4.990] Current version of pixman: 0.33.6
[ 4.990]Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 4.990] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 4.990] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Aug  5 18:24:49 
2016
[ 4.991] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 4.991] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 4.992] (==) No Layout section.  Using the first Screen section.
[ 4.992] (==) No screen section available. Using defaults.
[ 4.992] (**) |-->Screen "Default Screen Section" (0)
[ 4.992] (**) |   |-->Monitor ""
[ 4.993] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 4.993] (==) Automatically adding devices
[ 4.993] (==) Automatically enabling devices
[ 4.993] (==) Automatically adding GPU devices
[ 4.993] (==) Max clients allowed: 256, resource mask: 0x1f
[ 4.994] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 4.994]Entry deleted from font path.
[ 4.995] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/100dpi/:unscaled,
/usr/share/fonts/X11/75dpi/:unscaled,
/usr/share/fonts/X11/Type1,
/usr/share/fonts/X11/100dpi,
/usr/share/fonts/X11/75dpi,
built-ins
[ 4.995] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 4.995] (II) The server relies on udev to provide the list of input 
devices.
If no devices become available, reconfigure udev or disable 
AutoAddDevices.
[ 4.995] (II) Loader magic: 0x55828f1c0dc0
[ 4.995] (II) Module ABI versions:
[ 4.995]X.Org ANSI C Emulation: 0.4
[ 4.995]X.Org Video Driver: 20.0
[ 4.995]X.Org XInput driver : 22.1
[ 4.995]X.Org Server Extension : 9.0
[ 4.995] (++) using VT number 7

[ 4.995] (II) systemd-logind: logind integration requires -keeptty and 
-keeptty was not provided, disabling logind integration
[ 4.995] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 5.032] (--) PCI:*(0:0:2:0) 8086:191b:1028:06e4 rev 6, Mem @ 
0xdb00/16777216, 0x7000/268435456, I/O @ 0xf000/64, BIOS @ 
0x/131072
[ 5.033] (II) LoadModule: "glx"
[ 5.035] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 5.040] (II) Module glx: vendor="X.Org Foundation"
[ 5.040]compiled for 1.18.4, module version = 1.0.0
[ 5.040]ABI class: X.Org Server Extension, version 9.0
[ 5.040] (==) AIGLX enabled
[ 5.040] (==) Matched modesetting as autoconfigured driver 0
[ 5.040] (==) Matched fbdev as autoconfigured driver 1
[ 5.040] (==) Matched vesa as autoconfigured driver 2
[ 5.040] (==) Assigned the driver to the xf86ConfigLayout
[ 5.040] (II) LoadModule: "modesetting"
[ 5.040] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 5.041] (II) Module modesetting: vendor="X.Org Foundation"
[ 5.041]compiled for 1.18.4, module version = 1.18.4
[ 5.041]Module class: X.Org Video Driver
[ 5.041]