Arch Linux

agent0

Member

From: Russia

Registered: 2014-05-04

Posts: 74

Website

Backlight is controllable only after wake up on Lenovo yoga 13

Hello.

I have a problem with laptop Lenovo IdeaPad Yoga 13. Backlight is controllable by buttons only after suspend. If I power off my laptop and boot again, I could not be able to control brightness, until I go to sleep mode and then wake up again.

I am rather new in Arch Linux. I used Linux Mint before and there I changed grub config. But in Arch I use rEFInd loader.

Please, help me with this problem. What information should I give?
I have created Arch Wiki article about this laptop and there is output of lsusb and lspci commands: https://wiki.archlinux.org/index.php/Le … ad_Yoga_13

agent0

Member

From: Russia

Registered: 2014-05-04

Posts: 74

Website

Re: Backlight is controllable only after wake up on Lenovo yoga 13

I have noticed, that the brightnes IS controllable in boot after power offing, but with huge delay. For example, I press sun with minus button on keybord: nothing happens. But then, after some minutes of working, brightness suddenly goes down.
I have added $dmesg output before sleep: http://bpaste.net/show/b926e3cf024a   
and here is after sleep: http://bpaste.net/show/8896c1b68c9c

Last edited by agent0 (2014-09-06 23:07:54)