Judging by the age of this bug and the number of people subscribed, this
page seems to have become a forum and not a current relevant bug report.
The release 17.10 this bug was about is no longer supported anyway.
Anyone experiencing problems please open a new bug of your own by
running:
I've found this forum thread:
https://forums.developer.nvidia.com/t/solus-nvidia-gtx-1070-brightness-
control-not-working/54472
If I understand correctly, the OP resolved his issue by setting the
kernel boot parameter
nvidia.NVreg_EnableBacklightHandler=1
This did not solve the issue for
** Tags removed: gnome-17.10
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https://bugs.launchpad.net/bugs/1720438
Title:
brightness control broken nvidia
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** Tags removed: artful
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Title:
brightness control broken nvidia
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xbacklight works for me at Ubuntu 18.10.
I have notebook with hybrid graphics but i disabled Intel Graphic in UEFI
settings. I'm using nvidia-driver-390.
I can't test with Intel Graphics cause Desktop does not launch after Login with
Intel GPU.
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Switching to integrated graphics the Fn works perfectly on gnome. Also:
ls -l /sys/class/backlight/
total 0
lrwxrwxrwx 1 root root 0 may 5 12:12 intel_backlight ->
../../devices/pci:00/:00:02.0/drm/card0/card0-eDP-1/intel_backlight
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I confirm that 'xbacklight -set 60' works (as user, no root required),
in both desktop sessions: ubuntu and plasma. However, the Fn key + arrow
only works on plasma.
Being on ubuntu session, inside the directory '/sys/class/backlight'
there is nothing, yet xbacklight works. So it's almost sure a
Probably just waiting for the gnome team to fix it is just enough.
** Changed in: gnome-power-manager (Ubuntu)
Status: Incomplete => Confirmed
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** Changed in: gnome-power
Status: Unknown => Confirmed
** Changed in: gnome-power
Importance: Unknown => Medium
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Title:
brightness
Please try the 'xbacklight' command. And see also
https://bugzilla.gnome.org/show_bug.cgi?id=688052
** Also affects: gnome-power-manager (Ubuntu)
Importance: Undecided
Status: New
** Bug watch added: GNOME Bug Tracker #688052
https://bugzilla.gnome.org/show_bug.cgi?id=688052
**
Also, obviously, the above only works in Xorg logins.
** Also affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Changed in: gnome-shell (Ubuntu)
Status: New => Incomplete
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Note to developers: The tricky thing about this bug is that you may need
a pure Nvidia system. Not a hybrid.
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Title:
brightness control broken
If your backlight is wired through Nvidia then I think you may need to
use the xbacklight interface. You can do it manually by installing:
sudo apt install xbacklight
and running xbacklight ...
If that works for you then I think the problem is that mutter/gnome-
shell isn't
Ok tried several graphical environments with the line
"WaylandEnable=false" commented and uncommented, and the proprietary
nvidia graphics driver, and those are the results:
- Desktop Session: Ubuntu: Fn to control screen backlight doesn't work
in any case, neither line enabled nor disabled.
-
Try this tutorial
https://linuxconfig.org/how-to-disable-wayland-and-enable-xorg-display-
server-on-ubuntu-18-04-bionic-beaver-linux
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Title:
I think it has to do with Unity or Wayland. If you use KDE instead it
just works.
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Title:
brightness control broken nvidia
To manage
I'm having the same issue in 18.04 Nvidia driver 390.48. I found this
workaround at the moment if anyone is interested
https://askubuntu.com/a/1013767
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Persists on 18.04 beta 2 with Nvidia driver 390
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Title:
brightness control broken nvidia
To manage notifications about this bug go to:
Confirmed on 17.10 and Nvidia drivers 384.111
** Also affects: nvidia-drivers-ubuntu
Importance: Undecided
Status: New
** Package changed: nvidia-graphics-drivers (Ubuntu) => nvidia-graphics-
drivers-384 (Ubuntu)
** No longer affects: nvidia-drivers-ubuntu
** Tags added: artful
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After upgrade from 17.04 to 17.10 I can only change brightness if I log
in to unity desktop and from there adjust brightness setting in system
settings.
With Ubuntu 17.10 I have tried following combinations:
Xorg, nvidia & unity: ok
Xorg, nvidia & gnome: not ok
Wayland, nouveau & gnome: not ok
** Package changed: gnome-power-manager (Ubuntu) => nvidia-graphics-
drivers (Ubuntu)
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Title:
brightness control broken nvidia
To manage
I tried also: sudo su -c 'echo 10 >
/sys/class/backlight/acpi_video0/brightness'.
Pressing the Fn keys brings up the OSD brightness control, which
reflects the value of the /sys/class/backlight/acpi_video0/brightness
file (and viceversa), but the actual screen brightness does not change.
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@brinstar, yes I did the sudo update-grub part, and tried
acpi_brightness=[native|vendor] which for me makes the Fn hot keys not
working (when you press them, no brightness icon appears).
Last update brought in NVidia drivers 384.90, but no joy, the problem is
still present.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-power-manager (Ubuntu)
Status: New => Confirmed
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also did you do the update-grub part? but I do think this bug needs a
proper fix
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Title:
brightness control broken nvidia
To manage
remember to click the 'This bug affects you' link near the top
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Title:
brightness control broken nvidia
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Same problem here.
Ubuntu 17.10 beta 2
NVIDIA Corporation GM204M [GeForce GTX 970M]
Driver NVIDIA binary 375.82
Changing the brightness via Fn keys or via Settings/Power does not work.
Adding acpi_osi=Linux does nothing for me, the problem remains.
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I've managed to use a workaround to make the hotkeys work.
I added acpi_osi=Linux to the grub config file and did an update-grub
and it works. But I think it would be better if this was looked into as
it did work fine without the acpi addition on Ubuntu LTS.
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I think this is more of a GNOME3 bug than a bug with the Nvidia driver
** Package changed: nvidia-graphics-drivers-340 (Ubuntu) => gnome-
desktop3 (Ubuntu)
** Package changed: gnome-desktop3 (Ubuntu) => gnome-power-manager
(Ubuntu)
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