Dell Inspiron laptop 17 7000 - brightness function keys Fn-F11 and Fn-F12 not working
The function keys to control the screen brightness - Fn-F11 & Fn-F12 - are not working.
Xubuntu 18.10.
Dell Inspiron 17 7000 (7786) laptop
I have tried updating the boot parameters in /etc/default/grub
Currently running:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_osi=! "acpi_osi=Windows 2015""
I also tried these options:
"acpi_osi="
"acpi_osi=Linux"
Some more checks:
ls -l /sys/class/backlight
...shows nothing.
xrandr --verbose | grep Bright
...shows nothing.
sudo showkey
...shows 224 for Fn-F11 (brightness down) and 225 for Fn-F12 (brightness up).
The other function keys - volume, keyboard backlight, wireless on/off, etc... are working OK.
dell brightness 18.10 inspiron function-keys
asked Feb 12 at 2:15
David RobsonDavid Robson
312
add a comment |
The function keys to control the screen brightness - Fn-F11 & Fn-F12 - are not working.
Xubuntu 18.10.
Dell Inspiron 17 7000 (7786) laptop
I have tried updating the boot parameters in /etc/default/grub
Currently running:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_osi=! "acpi_osi=Windows 2015""
I also tried these options:
"acpi_osi="
"acpi_osi=Linux"
Some more checks:
ls -l /sys/class/backlight
...shows nothing.
xrandr --verbose | grep Bright
...shows nothing.
sudo showkey
...shows 224 for Fn-F11 (brightness down) and 225 for Fn-F12 (brightness up).
The other function keys - volume, keyboard backlight, wireless on/off, etc... are working OK.
dell brightness 18.10 inspiron function-keys
asked Feb 12 at 2:15
David RobsonDavid Robson
312
add a comment |
The function keys to control the screen brightness - Fn-F11 & Fn-F12 - are not working.
Xubuntu 18.10.
Dell Inspiron 17 7000 (7786) laptop
I have tried updating the boot parameters in /etc/default/grub
Currently running:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_osi=! "acpi_osi=Windows 2015""
I also tried these options:
"acpi_osi="
"acpi_osi=Linux"
Some more checks:
ls -l /sys/class/backlight
...shows nothing.
xrandr --verbose | grep Bright
...shows nothing.
sudo showkey
...shows 224 for Fn-F11 (brightness down) and 225 for Fn-F12 (brightness up).
The other function keys - volume, keyboard backlight, wireless on/off, etc... are working OK.
dell brightness 18.10 inspiron function-keys
asked Feb 12 at 2:15
David RobsonDavid Robson
312
The function keys to control the screen brightness - Fn-F11 & Fn-F12 - are not working.
Xubuntu 18.10.
Dell Inspiron 17 7000 (7786) laptop
I have tried updating the boot parameters in /etc/default/grub
Currently running:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_osi=! "acpi_osi=Windows 2015""
I also tried these options:
"acpi_osi="
"acpi_osi=Linux"
Some more checks:
ls -l /sys/class/backlight
...shows nothing.
xrandr --verbose | grep Bright
...shows nothing.
sudo showkey
...shows 224 for Fn-F11 (brightness down) and 225 for Fn-F12 (brightness up).
The other function keys - volume, keyboard backlight, wireless on/off, etc... are working OK.
dell brightness 18.10 inspiron function-keys
dell brightness 18.10 inspiron function-keys
asked Feb 12 at 2:15
David RobsonDavid Robson
312
asked Feb 12 at 2:15
David RobsonDavid Robson
312
asked Feb 12 at 2:15
David RobsonDavid Robson
312
asked Feb 12 at 2:15
David RobsonDavid Robson
312
asked Feb 12 at 2:15
David RobsonDavid Robson
312
312
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
This solution worked for me:
Taken from:
Brightness fn key shortcut doesn't work on ASUS laptop
and
13.10 Can't Adjust Dell Laptop Backlight
...but not the same.
1. Create file: /usr/share/X11/xorg.conf.d/20-intel.conf
Open terminal and type these commands:
sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf
sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf
Add the following lines to this file:
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection
Save the file and close nano.
2. Update Grub settings
In a terminal and type these commands:
sudo nano /etc/default/grub
find the line starting with:
GRUB_CMDLINE_LINUX_DEFAULT
and add the option "acpi_backlight=vendor" (without the quotes).
E.g.: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Save the file and exit nano.
In a in terminal:
sudo update-grub
Restart your laptop and it will work probably...
answered Feb 12 at 3:17
David RobsonDavid Robson
312
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
This solution worked for me:
Taken from:
Brightness fn key shortcut doesn't work on ASUS laptop
and
13.10 Can't Adjust Dell Laptop Backlight
...but not the same.
1. Create file: /usr/share/X11/xorg.conf.d/20-intel.conf
Open terminal and type these commands:
sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf
sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf
Add the following lines to this file:
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection
Save the file and close nano.
2. Update Grub settings
In a terminal and type these commands:
sudo nano /etc/default/grub
find the line starting with:
GRUB_CMDLINE_LINUX_DEFAULT
and add the option "acpi_backlight=vendor" (without the quotes).
E.g.: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Save the file and exit nano.
In a in terminal:
sudo update-grub
Restart your laptop and it will work probably...
answered Feb 12 at 3:17
David RobsonDavid Robson
312
add a comment |
This solution worked for me:
Taken from:
Brightness fn key shortcut doesn't work on ASUS laptop
and
13.10 Can't Adjust Dell Laptop Backlight
...but not the same.
1. Create file: /usr/share/X11/xorg.conf.d/20-intel.conf
Open terminal and type these commands:
sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf
sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf
Add the following lines to this file:
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection
Save the file and close nano.
2. Update Grub settings
In a terminal and type these commands:
sudo nano /etc/default/grub
find the line starting with:
GRUB_CMDLINE_LINUX_DEFAULT
and add the option "acpi_backlight=vendor" (without the quotes).
E.g.: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Save the file and exit nano.
In a in terminal:
sudo update-grub
Restart your laptop and it will work probably...
answered Feb 12 at 3:17
David RobsonDavid Robson
312
add a comment |
This solution worked for me:
Taken from:
Brightness fn key shortcut doesn't work on ASUS laptop
and
13.10 Can't Adjust Dell Laptop Backlight
...but not the same.
1. Create file: /usr/share/X11/xorg.conf.d/20-intel.conf
Open terminal and type these commands:
sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf
sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf
Add the following lines to this file:
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection
Save the file and close nano.
2. Update Grub settings
In a terminal and type these commands:
sudo nano /etc/default/grub
find the line starting with:
GRUB_CMDLINE_LINUX_DEFAULT
and add the option "acpi_backlight=vendor" (without the quotes).
E.g.: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Save the file and exit nano.
In a in terminal:
sudo update-grub
Restart your laptop and it will work probably...
answered Feb 12 at 3:17
David RobsonDavid Robson
312
This solution worked for me:
Taken from:
Brightness fn key shortcut doesn't work on ASUS laptop
and
13.10 Can't Adjust Dell Laptop Backlight
...but not the same.
1. Create file: /usr/share/X11/xorg.conf.d/20-intel.conf
Open terminal and type these commands:
sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf
sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf
Add the following lines to this file:
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection
Save the file and close nano.
2. Update Grub settings
In a terminal and type these commands:
sudo nano /etc/default/grub
find the line starting with:
GRUB_CMDLINE_LINUX_DEFAULT
and add the option "acpi_backlight=vendor" (without the quotes).
E.g.: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Save the file and exit nano.
In a in terminal:
sudo update-grub
Restart your laptop and it will work probably...
answered Feb 12 at 3:17
David RobsonDavid Robson
312
answered Feb 12 at 3:17
David RobsonDavid Robson
312
answered Feb 12 at 3:17
David RobsonDavid Robson
312
answered Feb 12 at 3:17
David RobsonDavid Robson
312
312
add a comment |
add a comment |
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