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Thread: Trying to get backlight to work with psb driver on netbook

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hi,

bought msi x260 ultra light (netbook) , far working pretty good, however, can't adjust backlight batterlife worse be.


have installed psb driver (poulsbo) per https://wiki.ubuntu.com/hardwaresupp...ocardspoulsbo/

, works fine except backlight adjustment.

dug deeper , downloaded psb-kernel-source , looking through source.


interesting found code in intel_lvds.c checks see blc_type when module loaded. throughout code manipulates backlight, code checks see if blc_type either 0x01 or 0x02 , acts accordingly, however, blc_type 0x00, why don't have backlight support.

2 possible blc_types defined

#define blc_i2c_tpe 0x01
#define blc_pwm_type 0x02

. don't know means. have idea how backlight working? xrandr --ouput lvds0 --set backlight 50 not work me.

hey, did ever find solution?

guess 1 try force setting 0x01 or 0x02, of course risky.

assume have no files in /sys/class/backlight/ ?


Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Hardware [ubuntu] Trying to get backlight to work with psb driver on netbook


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