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#1 2009-01-16 06:11:12

yvonney
Member
Registered: 2008-06-11
Posts: 671

[SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

SOLVED: turns out there's 2 lines - one to turn the switch ON and one to set te level

turns the switch ON:
echo 1  > /sys/devices/platform/asus-laptop/ls_switch


sets the level  up to 15 = brightest:
echo 15  > /sys/devices/platform/asus-laptop/ls_level


---------------------
Hi all!

So... manageed to get back SOME of my brightness.... um, the screen that is.

I used to just fire this off after every boot:

echo 0 > /sys/devices/platform/asus-laptop/ls_switch


NOW I have to do:

echo 15 > /sys/devices/platform/asus-laptop/ls_switch

AND I only get back about 2/3s of my brightness...

um, can some bright person help me out here...

is this nvidia/asus related or what...

thanks!

Last edited by yvonney (2009-01-16 08:00:32)

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#2 2009-01-18 00:10:04

mitch00
Member
Registered: 2009-01-18
Posts: 5

Re: [SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

I'm having the same problem but when I try echo 1  > /sys/devices/platform/asus-laptop/ls_switch or echo 15  > /sys/devices/platform/asus-laptop/ls_level I get permission denied. sad What do I do? (btw I'm trying as root and regular user)

Last edited by mitch00 (2009-01-18 00:10:42)

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#3 2009-01-18 02:23:43

Diaz
Member
From: Lisbon, Portugal
Registered: 2008-04-16
Posts: 361
Website

Re: [SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

i just updated the kernel and now i can't control the brightness.
Here asus M51vr with catalyst drivers loaded.
Fn+brn keys never worked but the gnome brigthness applet let me control it, as well manually editing the files listed above.

I have been searching the web for about 2 hours now, and the only news i get are that with this new kernel the brightness contol got support in acpi.
In fact in dmesg now i get this line:

dmesg | grep asus-laptop

asus-laptop: Asus Laptop Support version 0.42
asus-laptop:   M51Vr model detected
asus-laptop: Brightness ignored, must be controlled by ACPI video driver

I'll try the open source drivers, but with them i couldn't control the brightness only with the catalyst ones.

Hope someone get info/solutions...


Owner of Asus 1215B :: User of Xfce :: Vasco Dias @blog

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#4 2009-01-18 05:12:54

yvonney
Member
Registered: 2008-06-11
Posts: 671

Re: [SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

All I do is use my up arrow in terminal to get the lines I typed earlier back and then hit return.

http://www.linlap.com/

has a LOT of cool asus info... I use stuff from another model close to mine

These worked for me

turns the switch ON:
echo 1  > /sys/devices/platform/asus-laptop/ls_switch


sets the level  up to 15 = brightest:
echo 15  > /sys/devices/platform/asus-laptop/ls_level

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#5 2009-01-18 20:11:40

Diaz
Member
From: Lisbon, Portugal
Registered: 2008-04-16
Posts: 361
Website

Re: [SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

yvonney wrote:

All I do is use my up arrow in terminal to get the lines I typed earlier back and then hit return.

http://www.linlap.com/

has a LOT of cool asus info... I use stuff from another model close to mine

These worked for me

turns the switch ON:
echo 1  > /sys/devices/platform/asus-laptop/ls_switch


sets the level  up to 15 = brightest:
echo 15  > /sys/devices/platform/asus-laptop/ls_level

this method you're using is broken in my laptop with the latest kernel. It worked before, but now those values change nothing. Maybe i'll downgrade the kernel, there are no features i need in the new one.


Owner of Asus 1215B :: User of Xfce :: Vasco Dias @blog

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#6 2009-01-18 21:41:49

yvonney
Member
Registered: 2008-06-11
Posts: 671

Re: [SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

the first line turns the SWITCH ON

THEN do the second line

and also go to that site as there may be something specific in other models...

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#7 2009-01-18 21:43:33

yvonney
Member
Registered: 2008-06-11
Posts: 671

Re: [SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

in my root folder (i run as root) so in there I have a file called

ls_switch


NOT    .ls_switch

just ls_switch

and inside that there's the number 15

JUST

15


try that

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#8 2009-01-19 01:57:04

Diaz
Member
From: Lisbon, Portugal
Registered: 2008-04-16
Posts: 361
Website

Re: [SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

well it appears i can change it like you said, but it is a completely diferent way it used to work. the ls_switch was for controling the auto brightness "feature". this change is very bad, now the applet in gnome doesn't change it, and when plug/unplug ac adapter is the same.
looks like i'll have some boring net searches...


Owner of Asus 1215B :: User of Xfce :: Vasco Dias @blog

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#9 2009-01-23 06:26:40

yvonney
Member
Registered: 2008-06-11
Posts: 671

Re: [SOLVED] dim screen again on ASUS laptop - due to Kernel-nvidia update

Found this tonight...
http://wiki.archlinux.org/index.php/Gno … ME_loading

don't know if you use gnome.... perhaps other DEs have similar?

I've gone gnome again [no gdm or login mgr]         after learning and working with as much as I could at the time on al lthe great DE and WMs

anyways.... have I mentioned how thrilled I am about my being a Linux and ARCH devotee lately!!!!!

I love getting better at  Linux....

Last edited by yvonney (2009-01-23 17:25:30)

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