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