installing Ubuntu 14 to my hp envy 15z and screen will not change brightness

kickingadog · Aug 10, 2014

So I had ubuntu 14.10 installed and everything worked perfectly. Not going into details but I ended up reinstalling the OS and now I cannot get the brightness to change. When I press brightness up or down on my keyboard it says it's changing on screen but the brightness never actually changes.

Computer specs.
http://www.logicbuy.com/deals/hp-envy-15z/45637.aspx

I'd really appreciate any type of help.

slaytonsonline · Aug 11, 2014

This is a common issue, I had to fix this myself on my personal machine.
Open a terminal and create the following configuration file, if it does not exist:

sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf

Now we need to edit this file. You can use any editor be it a terminal one or graphical.

sudo gedit /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 it. Log out and log in back. The brightness control should be working through function keys now

skittle · Aug 11, 2014

OP has an amd laptop not Intel...

What's up with all he generic blog spam lately? Is toms infested with bots?

OP: unfortunately backlight in Linux can have many things go wrong. Start by checking the Ubuntu wiki for common issues and fixes:

https://wiki.ubuntu.com/Kernel/Debugging/Backlight

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installing Ubuntu 14 to my hp envy 15z and screen will not change brightness

kickingadog

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slaytonsonline

slaytonsonline

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skittle

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