in /sys/class/backlight/acpi_video0
I have;
:/sys/class/backlight/acpi_video0$ ls -l total 0 -r--r--r-- 1 root root 4096 2008-02-06 16:52 actual_brightness -rw-r--r-- 1 root root 0 2008-02-06 16:54 brightness -r--r--r-- 1 root root 4096 2008-02-06 16:46 max_brightness -rw-r--r-- 1 root root 4096 2008-02-06 16:52 power lrwxrwxrwx 1 root root 0 2008-02-06 16:46 subsystem -> ../../../class/backlight --w------- 1 root root 4096 2008-02-06 16:46 uevent
subsystem folder countain an acpi_video0 which countain an subsystem folder...
/sys/class/backlight/acpi_video0/subsystem/acpi_video0/subsystem/acpi_video0/subsystem/acpi_video0/subsystem/acpi_video0/subsystem/acpi_video0/subsystem/acpi_video0/subsystem/acpi_video0/subsystem/acpi_video0/subsystem/acpi_video0/subsystem/acpi_vid (...)
in /sys/class/ backlight/ acpi_video0
I have;
:/sys/class/ backlight/ acpi_video0$ ls -l ./class/ backlight
total 0
-r--r--r-- 1 root root 4096 2008-02-06 16:52 actual_brightness
-rw-r--r-- 1 root root 0 2008-02-06 16:54 brightness
-r--r--r-- 1 root root 4096 2008-02-06 16:46 max_brightness
-rw-r--r-- 1 root root 4096 2008-02-06 16:52 power
lrwxrwxrwx 1 root root 0 2008-02-06 16:46 subsystem -> ../../.
--w------- 1 root root 4096 2008-02-06 16:46 uevent
subsystem folder countain an acpi_video0 which countain an subsystem folder...
/sys/class/ backlight/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_video0/ subsystem/ acpi_vid
(...)