[Bug 55161] Backlight Software control is acting wrong

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=55161





--- Comment #14 from pqwoerituytrueiwoq at gmail.com  2013-03-26 14:42:34 ---
Ran on patched copy of 3.9 rc4 from kernel.org

chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
100
976
chad at ASUS-A54C-NB91:~$ xbacklight -set 0
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
100
976
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
100
976
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
85
4882
chad at ASUS-A54C-NB91:~$ clear

chad at ASUS-A54C-NB91:~$ echo brightness to max via keys
brightness to max via keys
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
85
4882
chad at ASUS-A54C-NB91:~$ echo brightness to min via keys
brightness to min via keys
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
100
976
chad at ASUS-A54C-NB91:~$ xbacklight -set 0
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
100
976
chad at ASUS-A54C-NB91:~$ xbacklight -set 100
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
90
4882
chad at ASUS-A54C-NB91:~$ xbacklight -get
90.000000
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
91
3924
chad at ASUS-A54C-NB91:~$ xbacklight -get
91.000000
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
90
4882
chad at ASUS-A54C-NB91:~$ xbacklight -set 50
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
95
2201
chad at ASUS-A54C-NB91:~$ xbacklight -get
95.000000
chad at ASUS-A54C-NB91:~$ cat /sys/class/backlight/*/actual_brightness
90
4882
-------------------------------------------------------------------
chad at ASUS-A54C-NB91:~$ uname -r
3.9.0-rc4-custom
chad at ASUS-A54C-NB91:~$ cat
/sys/class/backlight/{acpi_video0,intel_backlight}/max_brightness;acpi -c |grep
LCD
100
4882
Cooling 0: LCD 10 of 100
chad at ASUS-A54C-NB91:~$ ls /sys/class/backlight/*
/sys/class/backlight/acpi_video0:
actual_brightness  brightness  max_brightness  subsystem  uevent
bl_power           device      power           type

/sys/class/backlight/intel_backlight:
actual_brightness  brightness  max_brightness  subsystem  uevent
bl_power           device      power           type
chad at ASUS-A54C-NB91:~$ cat
/sys/class/backlight/{acpi_video0,intel_backlight}/{actual_,}brightness;acpi -c
| grep LCD
90
100
4882
976
Cooling 0: LCD 10 of 100
chad at ASUS-A54C-NB91:~$ xbacklight -set 10
chad at ASUS-A54C-NB91:~$ cat
/sys/class/backlight/{acpi_video0,intel_backlight}/{actual_,}brightness;acpi -c
| grep LCD
99
10
1225
976
Cooling 0: LCD 1 of 100
chad at ASUS-A54C-NB91:~$ echo "brightness keys to max"
brightness keys to max
chad at ASUS-A54C-NB91:~$ cat
/sys/class/backlight/{acpi_video0,intel_backlight}/{actual_,}brightness;acpi -c
| grep LCD
85
10
4882
976
Cooling 0: LCD 15 of 100
chad at ASUS-A54C-NB91:~$ echo "brightness keys to min"
brightness keys to min
chad at ASUS-A54C-NB91:~$ cat
/sys/class/backlight/{acpi_video0,intel_backlight}/{actual_,}brightness;acpi -c
| grep LCD
100
10
976
976
Cooling 0: LCD 0 of 100
chad at ASUS-A54C-NB91:~$ xbacklight -set 100
chad at ASUS-A54C-NB91:~$ cat
/sys/class/backlight/{acpi_video0,intel_backlight}/{actual_,}brightness;acpi -c
| grep LCD
90
100
4882
976
Cooling 0: LCD 10 of 100
chad at ASUS-A54C-NB91:~$ xbacklight -get 
90.000000
chad at ASUS-A54C-NB91:~$ cat
/sys/class/backlight/{acpi_video0,intel_backlight}/{actual_,}brightness;acpi -c
| grep LCD
91
90
3924
976
Cooling 0: LCD 9 of 100

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