I can't adjust brightness
I've got a MSI GT72VR laptop with ONLY 1 graphic card, a NVIDIA GeForce GTX 1060 Mobile and 2 audio card, a NVIDIA GP106 and a Intel CM238.
The problem is that I can't adjust the brightness of my screen. Always is 100%. I've got Ubuntu 18.04 clean install and nouveau drivers (Xorg.org)
There aren't brightness slider at the top of bar:
Also, the keys Fn + Bright Up and Fn + Bright Down doesn't do anything
Things I've already tried that don't work [1 May 2018]
- Change driver to NVIDIA driver 390
- Install and use redshift, xbacklight Link
- Edit with sudo vi /etc/default/grub
- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=native"
- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=video"
- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off"
- And then update-grub and reboot Link Link
Output for some commands
lspc | grep NVIDIA:
01:00.0 VGA compatible controller: NVIDIA Corporation GP106M [GeForce GTX 1060 Mobile] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller (rev a1)
ll /sys/class/backlight:
total 0
drwxr-xr-x 2 root root 0 may 1 12:32 ./
drwxr-xr-x 67 root root 0 may 1 12:10 ../
dmesg | grep -i vga:
[ 0.148024] pci 0000:01:00.0: vgaarb: setting as boot VGA device
[ 0.148024] pci 0000:01:00.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 0.148024] pci 0000:01:00.0: vgaarb: bridge control possible
[ 0.148024] vgaarb: loaded
[ 0.969601] fb0: EFI VGA frame buffer device
[ 1.349219] fb: switching to nouveaufb from EFI VGA
[ 543.049571] snd_hda_intel 0000:01:00.1: Handle vga_switcheroo audio client
uname -a:
Linux laptop 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
journalctl -b | grep -i nvidia:
may 01 12:19:27 laptop kernel: nouveau 0000:01:00.0: NVIDIA GP106 (136000a1)
may 01 12:19:28 laptop kernel: input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input16
may 01 12:19:28 laptop kernel: input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input17
may 01 12:19:33 laptop /usr/lib/gdm3/gdm-x-session[1171]: (II) NOUVEAU driver for NVIDIA chipset families :
may 01 12:19:33 laptop /usr/lib/gdm3/gdm-x-session[1171]: (--) NOUVEAU(0): Chipset: "NVIDIA NV136"
may 01 12:19:38 laptop /usr/lib/gdm3/gdm-x-session[1171]: (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event15)
may 01 12:19:38 laptop /usr/lib/gdm3/gdm-x-session[1171]: (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=7 (/dev/input/event16)
inxi -SMCGAx:
System: Host: laptop Kernel: 4.15.0-20-generic x86_64 bits: 64 gcc: 7.3.0
Desktop: Gnome 3.28.1 (Gtk 3.22.30-1ubuntu1) Distro: Ubuntu 18.04 LTS
Machine: Device: laptop System: Micro-Star product: GT72VR 7RD v: REV:1.0 serial: N/A
Mobo: Micro-Star model: MS-1785 v: REV:1.0 serial: N/A
UEFI: American Megatrends v: E1785IMS.30E date: 10/27/2017
CPU: Quad core Intel Core i7-7700HQ (-MT-MCP-) arch: Skylake rev.9 cache: 6144 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 22464
clock speeds: max: 3800 MHz 1: 1046 MHz 2: 3165 MHz 3: 3164 MHz 4: 3139 MHz 5: 3093 MHz 6: 3190 MHz
7: 3056 MHz 8: 3046 MHz
Graphics: Card: NVIDIA GP106M [GeForce GTX 1060 Mobile] bus-ID: 01:00.0
Display Server: x11 (X.Org 1.19.6 ) drivers: fbdev,nouveau (unloaded: modesetting,vesa)
Resolution: [email protected]
OpenGL: renderer: NV136 version: 4.3 Mesa 18.0.0-rc5 Direct Render: Yes
Audio: Card-1 Intel CM238 HD Audio Controller driver: snd_hda_intel bus-ID: 00:1f.3
Card-2 NVIDIA GP106 High Definition Audio Controller driver: snd_hda_intel bus-ID: 01:00.1
Sound: Advanced Linux Sound Architecture v: k4.15.0-20-generic
sudo lshw -C display:
*-display
description: VGA compatible controller
product: GP106M [GeForce GTX 1060 Mobile]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nouveau latency=0
resources: irq:131 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:c0000-dffff
