[SOLVED] backlight with Fn + F5/F6 touch for Asus laptop

[SOLVED] backlight with Fn + F5/F6 touch for Asus laptop

Postby jibz » Mar 4th, '17, 14:24

Hello every body,
I tried few hours how to set the Fn+F5/F6 to set the backlight of the screen, I found a lot of "workaround" which I don't really liked.
The other Fn + (F1-F4 & F7-F12) work, which are the sleep mode, airplane mode, keyboard backlight, touchpad activation, and sound management. But not the screen backlight.
The solution I found on https://bbs.archlinux.org/viewtopic.php?id=192261 is to add "acpi_osi= " (with a space, I don't know why, but it's better so).
First time I edited the /etc/default/grub file, the line "GRUB_CMDLINE_LINUX_DEFAULT=" wasn't here. I edit the boot process in the CCM (I reset the ACPI and ACPI_LOCAL, and set something else with the screen resolution), it didn't solved my problem after rebooting the system, but the line appear :
GRUB_CMDLINE_LINUX_DEFAULT=" vga=797"

I edit this line to :
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=  vga=797"

and the Fn+F5/F6 touch set the backlight !
No "workaround" with xbacklight or other script like suggested in some forum.
This solution change something else, a warning appear in the boot process, but I don't remember what.
Bye !
jibz
 
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Re: [SOLVED] backlight with Fn + F5/F6 touch for Asus laptop

Postby doktor5000 » Mar 4th, '17, 15:59

For reference, we had that in errata since quite some time: https://wiki.mageia.org/en/Mageia_3_Err ... regression
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Re: [SOLVED] backlight with Fn + F5/F6 touch for Asus laptop

Postby jibz » Mar 4th, '17, 16:53

Oh thank you ! I didn't found it !
For acpi_backlight=vendor it doesn't worked here.
Perhaps I will try the second acpi_osi="!Windows 2012", I will give a feedback later.
jibz
 
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Re: [SOLVED] backlight with Fn + F5/F6 touch for Asus laptop

Postby doktor5000 » Mar 4th, '17, 22:20

You basically only need to change it away from the default, which is "windows 2012" usually. Leaving it empty mostly does the same thing.
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Re: [SOLVED] backlight with Fn + F5/F6 touch for Asus laptop

Postby jibz » Mar 5th, '17, 13:11

Ok ! But when I tried with "acpi=Linux" it didn't worked, and in this case, it's not the default right ?
jibz
 
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Re: [SOLVED] backlight with Fn + F5/F6 touch for Asus laptop

Postby doktor5000 » Mar 5th, '17, 13:23

Cauldron is not for the faint of heart!
Caution: Hot, bubbling magic inside. May explode or cook your kittens!
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