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#1 2015-02-02 18:32:03

hataketsu
Member
From: Việt Nam
Registered: 2014-12-20
Posts: 4
Website

[Solved] Brightness control does not work in xfce4 moreover.

Hi everyone.
I installed Arch on my HP EliteBook 8460p laptop and have a good time with it.

However after a hang of xfce (the mouse was still working but the screen hang), I cannot control my brightness by Fn+F10 anymore.

The brightness progress bar pop up but it doesn't change when I press buttons so now I have to work around with commandline but it's so unconvenient.

Any advice? I looked for errors in many xfce config files, change brightness value (I restored it after that) but nothing seem to work. Thanks for your replys.

Last edited by hataketsu (2015-02-04 14:32:06)

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#2 2015-02-02 18:45:39

Head_on_a_Stick
Member
From: London
Registered: 2014-02-20
Posts: 4,584
Website

Re: [Solved] Brightness control does not work in xfce4 moreover.

Have you tried some kernel parameters?
https://wiki.archlinux.org/index.php/Ba … ne_options

I have lost function-key backlight control after a kernel upgrade and had to add one to regain it.

Alternatively just use a keybinding for whatever command you are using (xbacklight?).

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#3 2015-02-02 19:23:28

hataketsu
Member
From: Việt Nam
Registered: 2014-12-20
Posts: 4
Website

Re: [Solved] Brightness control does not work in xfce4 moreover.

Yes, I am using xbacklight. Oh, maybe it's also time when I upgraded kernel. I rebooted laptop. Let me try.

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#4 2015-02-02 19:40:49

hataketsu
Member
From: Việt Nam
Registered: 2014-12-20
Posts: 4
Website

Re: [Solved] Brightness control does not work in xfce4 moreover.

I added parameters to kernel but no lucky here. I switch to KDE and brightness control works perfectly, so it's not a problem of kernel smile

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#5 2015-02-03 23:58:20

teateawhy
Member
From: GER
Registered: 2012-03-05
Posts: 1,131
Website

Re: [Solved] Brightness control does not work in xfce4 moreover.

Check out the note on the wiki page:
https://wiki.archlinux.org/index.php/Backlight#Overview
Could be related to the problem described there.
https://bbs.archlinux.org/viewtopic.php?id=193130

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#6 2015-02-04 14:26:29

hataketsu
Member
From: Việt Nam
Registered: 2014-12-20
Posts: 4
Website

Re: [Solved] Brightness control does not work in xfce4 moreover.

Oh, I almost give up but eventually I find out  the reason. Someone turned off checkbox "Handle display brightness keys" in Xfce Power Manager . Thanks teateawhy very much for the advice, I never ever think about this area big_smile

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#7 2018-05-17 06:08:44

Nyilas_Laszlo
Member
Registered: 2018-05-17
Posts: 1

Re: [Solved] Brightness control does not work in xfce4 moreover.

Lenovo G505s. Same issue and resolved by enabling "Handle display brightness keys" in Xfce Power Manager. Now Fn+F11 and Fn+F12 works properly smile.
https://image.ibb.co/caMDad/K_perny_k_p … _50_21.png

Last edited by V1del (2018-05-17 07:16:24)

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#8 2018-05-17 07:19:45

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 5,002

Re: [Solved] Brightness control does not work in xfce4 moreover.

Don't necrobump solved threads with an empty post containing what's already part of the thread and an image that's too big.

Please read our Code of Conduct for future interactions on the boards.

Closing.

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