On 03/27/15 16:01, Ranjan1018 . wrote:
This patch exposes the backlight support via a sysctl:
set the backlight to 10%:
# sysctl hw.dri.0.i915_backlight=10
hw.dri.0.i915_backlight: 25 -> 10
set the backlight to 50%:
# sysctl hw.dri.0.i915_backlight=50
hw.dri.0.i915_backlight: 10 -> 50
decrease the current backlight value:
# sysctl hw.dri.0.i915_backlight=-1000
hw.dri.0.i915_backlight: 50 -> 43
increment the current backlight value:
# sysctl hw.dri.0.i915_backlight=1000
hw.dri.0.i915_backlight: 43 -> 51
# sysctl hw.dri.0.i915_backlight=1000
hw.dri.0.i915_backlight: 51 -> 60
I am running this path on for about a week without issue.
This path can be found at:
https://github.com/maurizio-emmex/i915_backlight_freebsd
I thank Elizabeth Myers, elizabeth at interlinked dot me, for the idea of
adding the backlight support for the i915 driver and for the original patch.
Regards,
Maurizio
Maybe you want to use "CTLFLAG_RWTUN" so that it also can be set from
/boot/loader.conf ?
--HPS
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