CyanogenMod brightness Issue FIXED

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I have installed Cyanogenmod , it is super fast and perfect rom

only one issue that is very major issue for me , is low brightness. I tried many things but no success

Today i got solution , it is very easy

1. After installing cyanogenmod , install root explorer
2. go to sysyem/etc directory
3. Find hw_config.sh file
4. Tap and hold on this hw_config.sh file , select edit in text viewer option from the menu
5. Scroll down to the bottom , there you will see this code (i am using FXP054 cyanogenmod , for other versions it may vary)

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds
echo 1,65,255,24,24,5,128 > $dev/lcd-backlight/als/curve # ALS curve for group1
echo 2,0,0,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 1 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h
echo 450 > $dev/button-backlight/max_current

Change above code to

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds
echo 0,0,0,0,0,0,0 > $dev/lcd-backlight/als/curve # ALS curve for group1
echo 2,0,0,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 1 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h
echo 450 > $dev/button-backlight/max_current

Reboot your phone and voila you have fixed brightness problem :


Thanks to xutienan9520

You can also hit thanks button for me

my hero!

10000000000000000000000000000 thanks .... life saver

Many thanks,

I've just tried to do this on FXP106 CM7.2, but the original text in my sh_config.sh is different to yours by a couple of lines so I just want to check what I should be doing before I break something...

It's currently

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds/
echo 0,0,0,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 0 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h

Should I replace it with this?

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds
echo 0,0,0,0,0,0,0 > $dev/lcd-backlight/als/curve # ALS curve for group1
echo 2,0,0,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 1 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h
echo 450 > $dev/button-backlight/max_current

Any help gratefullly received. I don't really know what this all means so I'm a bit apprehensive to just try it in case it breaks something.

Originally Posted by richratt

Many thanks,

I've just tried to do this on FXP106 CM7.2, but the original text in my sh_config.sh is different to yours by a couple of lines so I just want to check what I should be doing before I break something...

It's currently

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds/
echo 0,0,0,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 0 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h

Should I replace it with this?

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds
echo 0,0,0,0,0,0,0 > $dev/lcd-backlight/als/curve # ALS curve for group1
echo 2,0,0,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 1 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h
echo 450 > $dev/button-backlight/max_current

Any help gratefullly received. I don't really know what this all means so I'm a bit apprehensive to just try it in case it breaks something.

Yes i have done this and worked fine for me on FXP 106

hi! it is same me.

but it work very well!

Thank a lot！it is work well in fxp 108

will this work on any xperia phone.i want to try it on my xperia mini..

Originally Posted by akshay13071990

will this work on any xperia phone.i want to try it on my xperia mini..

yes it will work on any xperia phone with cyanogenmod

here is my hw_config.sh:

# Audio jack configuration
dev=/sys/devices/platform/simple_remote.0
echo 0,201,1600 > $dev/accessory_min_vals  # default = 0,200,1600
echo 200,1599  > $dev/accessory_max_vals  # default = 200,1600
echo 0,100,280,500,700 > $dev/button_min_vals  # default = 0,100,300,600,700
echo 99,199,399,699,5000  > $dev/button_max_vals  # default = 99,199,399,699,5000
echo 512   > $dev/btn_trig_period_freq  # Button Period Freq(Hz) default = 512
echo 16  > $dev/btn_trig_period_time  # Button Period Time(cycle) default = 16
echo 512   > $dev/btn_trig_hyst_freq    # Button Hysteresis Freq(Hz) default = 512
echo 16  > $dev/btn_trig_hyst_time   # Button Hysteresis Time(Cycle) default = 16
echo 500 > $dev/btn_trig_level  # default = 500

# Proximity sensor configuration
dev=/sys/bus/i2c/devices/0-0054/
val_cycle=0
val_nburst=26
val_freq=0
val_threshold=2
val_filter=0

nv_param_loader 60240 prox_cal
val_calibrated=$?
case $val_calibrated in
 1)
  nv_param_loader 60240 threshold
  val_threshold=$?
  nv_param_loader 60240 rfilter
  val_filter=$?
  ;;
esac

echo $val_cycle > $dev/cycle    # Duration Cycle. Valid range is 0 - 3.
echo $val_nburst > $dev/nburst  # Number of pulses in burst. Valid range is 0 - 15. 16 - 31 is a special range for smultron only (SP)
echo $val_freq > $dev/freq      # Burst frequency. Valid range is 0 - 3.
echo $val_threshold > $dev/threshold # sensor threshold. Valid range is 0 - 15 (0.12V - 0.87V)
echo $val_filter > $dev/filter  # RFilter. Valid range is 0 - 3.

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds
echo 1 > $dev/lcd-backlight/als/enable  #Sensor on/off. 1 = on, reg 90h
echo 3,2,2,0 > $dev/lcd-backlight/als/params  #[gain],[filter_up],[filter_down],[offset]
echo 8000 > $dev/button-backlight-rgb1/max_current
echo 8000 > $dev/button-backlight-rgb2/max_current
echo 1,30,255,54,52,1,65 > $dev/lcd-backlight/als/curve  # ALS curve display BL [grp],[Y0],[Y3],[K1],[K2],[X1],[X2]
echo 2,48,0,128,128,4,10 > $dev/button-backlight-rgb1/als/curve  # ALS curve key LED 1 [grp],[Y0],[Y3],[K1],[K2],[X1],[X2]
echo 2,48,0,128,128,4,10 > $dev/button-backlight-rgb2/als/curve  # ALS curve key LED 2 [grp],[Y0],[Y3],[K1],[K2],[X1],[X2]
echo 3,71,255,64,32,5,37 > $dev/red/als/curve  # ALS curve RGB(red) [grp],[Y0],[Y3],[K1],[K2],[X1],[X2]
echo 3,71,255,64,32,5,37 > $dev/green/als/curve  # ALS curve RGB(green) [grp],[Y0],[Y3],[K1],[K2],[X1],[X2]
echo 3,71,255,64,32,5,37 > $dev/blue/als/curve  # ALS curve RGB(blue) [grp],[Y0],[Y3],[K1],[K2],[X1],[X2]

# Touch panel
dev=/sys/devices/platform/spi_qsd.0/spi0.0
app_id=`cat  $dev/appid`
case "$app_id" in
	"0x0505")
		fw=touch_smultron_innolux.hex
        ;;
	"0x0105")
		fw=touch_smultron_sony.hex
        ;;
	"0x0015")
		fw=touch_smultron_sony.hex
        ;;
	*)
		fw=touch_smultron_sony.hex
        ;;
esac
cyttsp_fwloader -dev $dev -fw /system/etc/firmware/$fw

# TI BQ275xx firmware loader
bq275xx_fwloader

I'm using cyanogenmod 7.1.0.1, i would like to upgrade to 7.1.0.2 but cyanogenmod just hangs on the animation booting so i've had to stick to this, i don't know which version of FXP i have but i'd like to upgrade to the latest if someone could help with that too.

What should i change to allow me to increase the brightness as it is rather dull?

I'm using Xperia mini btw, not xperia mini pro.

EDIT: just tried changing:

echo 1,30,255,54,52,1,65 > $dev/lcd-backlight/als/curve # ALS curve display BL [grp],[Y0],[Y3],[K1],[K2],[X1],[X2]
to:
echo 0,0,0,0,0,0,0 > $dev/lcd-backlight/als/curve # ALS curve display BL [grp],[Y0],[Y3],[K1],[K2],[X1],[X2]

but that didn't work, not sure which version of FXP i'm using i'm using cyanogenmod 7.1.0.1.