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klas
Tux's lil' helper
Joined: 30 Aug 2017
Posts: 104
Location: Manchester
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 Posted: Sun Oct 08, 2017 11:26 pm Post subject: [SOLVED]problem with laptop brightness |
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Hi guys ,
Anyone to help me fix my laptop brightness . It always goes back to full brightness everytime I restart the machine.
I have a lenovo thinkpad x1 carbon second gen.
Command | Code: | | zgrep BACKLIGHT /proc/config.gz |
throws something like this
| Code: |
adam@grodo ~ $ zgrep BACKLIGHT /proc/config.gz
# CONFIG_FB_BACKLIGHT is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_BACKLIGHT_CLASS_DEVICE=m
CONFIG_BACKLIGHT_GENERIC=m
# CONFIG_BACKLIGHT_APPLE is not set
# CONFIG_BACKLIGHT_PM8941_WLED is not set
# CONFIG_BACKLIGHT_SAHARA is not set
# CONFIG_BACKLIGHT_ADP8860 is not set
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LV5207LP is not set
# CONFIG_BACKLIGHT_BD6107 is not set
# CONFIG_BACKLIGHT_ARCXCNN is not set
# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
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Kind Regards,
Last edited by klas on Sat Dec 02, 2017 1:18 am; edited 1 time in total |
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Hieronymus Bosch
Tux's lil' helper
Joined: 29 Jan 2015
Posts: 83
Location: 31°45′33.14″N 106°29′24.63″W
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| Posted: Mon Oct 09, 2017 12:21 am Post subject: |
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Chage the following to built-in kernel :
| Code: |
CONFIG_BACKLIGHT_CLASS_DEVICE=m
CONFIG_BACKLIGHT_GENERIC=m
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Also, you can install x11-apps/xbacklight and then make a init script to adjust brightness.
_________________
Details fueled any investigation ... |
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_Nomad_
Guru
Joined: 11 Apr 2003
Posts: 571
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| Posted: Wed Oct 11, 2017 6:37 am Post subject: |
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or you can simply echo the desired value into | Code: | | /sys/class/backlight/{provider}/brightness |
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