Tag Info

Hot answers tagged

2

Copy-Paste from here this answer. First sudo sed 's/GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"/GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="/' -i /etc/default/grub Second sudo update-grub Reboot your system and see if Fn (for brightness) works. By NikTh


2

For waking up from suspension, I create the following script /etc/pm/sleep.d/brightness: #!/bin/sh case "$1" in resume|thaw) echo 170 > /sys/class/backlight/intel_backlight/brightness ;; esac And the permission of the script is -rwxr-xr-x. This should also solve your problem. But if the screen is dimmed, the brightness is set to ...


1

Here is the summary of what I did: I created the file /usr/share/X11/xorg.conf.d/20-intel.conf as described here 13.10 Can't Adjust Dell Laptop Backlight: Section "Device" Identifier "card0" Driver "intel" Option "Backlight" "intel_backlight" BusID "PCI:0:2:0" EndSection Then I changed one line ...


1

The normal output redirection operator is always executed with your user privileges, also when you write a sudo in front of the command which generates the STDOUT text. In other words, this will fail if you dont have the permission to write to that file So sudo echo won't work even when you are using sudo, you should use tee in this scenario like below ...


1

On my laptop I can check the contents of the file /sys/class/power_supply/C1BC/online: if the laptop is plugged in this file contains 1, otherwise it contains 0. For example, if [ "1" = "`cat /sys/class/power_supply/C1BC/online`" ]; then echo "Laptop is charging/plugged" else echo "Laptop is discharging/unplugged" fi Note. As confirmed by the OP, the ...


1

The fix here: http://www.thinkwiki.org/wiki/Category:T510 worked for me after a restart. Just be sure to backup your xorg.conf file beforehand (you can find it in /etc/X11/) My xorg.conf looks like this now in its entirety, and it works fine: Section "Device" Identifier "Default Device" Driver "nvidia" Option "NoLogo" ...


1

Worked for Toshiba Satellite L-750 sudo pico /etc/default/grub Make these changes: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=vendor" GRUB_CMDLINE_LINUX="quiet splash" Save and exit(Ctrl+x->yes->enter) sudo reboot


1

I had the same problem on my ThinkPad x240 running Ubuntu 14.04, and created a script that outputs and lets you step brightness up or down. This assumes that the manual method of putting a number into /sys/class/backlight/intel_backlight works, so test that first: sudo tee /sys/class/backlight/intel_backlight/brightness <<< 500 sudo tee ...



Only top voted, non community-wiki answers of a minimum length are eligible