Summary: HP EliteBook 8460p - Screen brightness not working
           Product: ACPI
           Version: 2.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Power-Video
        Regression: No

Setting brightness level on HP EliteBook 8460p is not working. I tried these

# cat /sys/class/backlight/acpi_video0/max_brightness 
# cat /sys/class/backlight/acpi_video0/brightness 
# echo 0 > /sys/class/backlight/acpi_video0/brightness 
# cat /sys/class/backlight/acpi_video0/brightness 
# echo 20 > /sys/class/backlight/acpi_video0/brightness 
# cat /sys/class/backlight/acpi_video0/brightness 

It did not show me any error, but screen brightness was not changed. And
setting brightness with Fn keys does not working (xev see scancodes, but
nothing happened).

When I disabled ACPI (with acpi=off in grub) brightness keys started working,
but xev does not see scancodes. And all other Fn keys does not working (when
acpi is disabled).

And it is possible to change brightness (with Fn keys) in Grub. But when linux
kernel is loaded (with enabled acpi) brightness keys stop working.

Configure bugmail:
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

FREE DOWNLOAD - uberSVN with Social Coding for Subversion.
Subversion made easy with a complete admin console. Easy 
to use, easy to manage, easy to install, easy to extend. 
Get a Free download of the new open ALM Subversion platform now.
acpi-bugzilla mailing list

Reply via email to