Thanks for your replies.

I get

# xrandr --query
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
   1920x1080      0.00*

I don't know if its a problem with skylake since openbsd 6.1 stable
doesn't support it yet.



On 07/23/17 00:53, Manuel Solis wrote:
> Hello again,
> 
> Then you should use xrandr
> 
> $xrandr --query
> To know which devices you have
> 
> $xrandr --output LVDS1 --auto
> To enable the monitor (LVDS1/VGA1/HDMI1)
> 
> $xrandr --output LVDS1 --set BACKLIGHT 50
> to adjust the backlight 
> 
> try for instance 50, 99, 05 and see how it goes
> 
> 
> Manuel
> 
>> El 22/07/2017, a las 16:20, G <gp...@mailbox.org> escribió:
>>
>> Thanks for the reply but it doesn't work.
>>
>>> On 07/23/17 00:11, Manuel Solis wrote:
>>> Hello, Mr G
>>>
>>> Try this two:
>>> $xbacklight -set 99
>>>
>>> $xbacklight -set 50
>>>
>>> If you see something different then it works!!
>>>
>>> Manuel 
>>>
>>>> El 22/07/2017, a las 14:48, G <gp...@mailbox.org> escribió:
>>>>
>>>> Hello.
>>>> I'm trying to adjust my laptop brightness.
>>>> When I'm trying to use xbacklight i get
>>>>
>>>> #xbacklight
>>>>
>>>> No outputs have backlight property
>>>>
>>>> I search around and it seems that xbacklight is broken. I found this email
>>>> https://marc.info/?l=openbsd-bugs&m=149919062727474
>>>>
>>>> that suggested to use wsconsctl but it doesn't seems to work. Although
>>>> the value of wsconsctl display.brightness changes the screen brightness
>>>> doesn't change.
>>>>
>>>> # wsconsctl
>>>> keyboard.type=pc-xt
>>>> keyboard.bell.pitch=400
>>>> keyboard.bell.period=100
>>>> keyboard.bell.volume=50
>>>> keyboard.bell.pitch.default=400
>>>> keyboard.bell.period.default=100
>>>> keyboard.bell.volume.default=50
>>>> wsconsctl: Use explicit arg to view keyboard.map.
>>>> keyboard.repeat.del1=400
>>>> keyboard.repeat.deln=100
>>>> keyboard.repeat.del1.default=400
>>>> keyboard.repeat.deln.default=100
>>>> keyboard.ledstate=2
>>>> keyboard.encoding=us
>>>> mouse.type=synaptics
>>>> mouse.rawmode=0
>>>> mouse.scale=1472,5670,1408,4794,0,44,76
>>>> mouse1.type=usb
>>>> mouse1.rawmode=1
>>>> mouse1.scale=0,0,0,0,0,0,0
>>>> display.type=vga-pci
>>>> display.emulations=vt100
>>>> display.screentypes=80x25,80x25bf,80x40,80x40bf,80x50,80x50bf
>>>> display.focus=4
>>>> display.brightness=100.00%
>>>> display.screen_on=250
>>>> display.screen_off=0
>>>> display.vblank=off
>>>> display.kbdact=on
>>>> display.msact=on
>>>> display.outact=on
>>>> # wsconsctl display.brightness=20
>>>> display.brightness -> 20.00%
>>>> # wsconsctl
>>>> keyboard.type=pc-xt
>>>> keyboard.bell.pitch=400
>>>> keyboard.bell.period=100
>>>> keyboard.bell.volume=50
>>>> keyboard.bell.pitch.default=400
>>>> keyboard.bell.period.default=100
>>>> keyboard.bell.volume.default=50
>>>> wsconsctl: Use explicit arg to view keyboard.map.
>>>> keyboard.repeat.del1=400
>>>> keyboard.repeat.deln=100
>>>> keyboard.repeat.del1.default=400
>>>> keyboard.repeat.deln.default=100
>>>> keyboard.ledstate=2
>>>> keyboard.encoding=us
>>>> mouse.type=synaptics
>>>> mouse.rawmode=0
>>>> mouse.scale=1472,5670,1408,4794,0,44,76
>>>> mouse1.type=usb
>>>> mouse1.rawmode=1
>>>> mouse1.scale=0,0,0,0,0,0,0
>>>> display.type=vga-pci
>>>> display.emulations=vt100
>>>> display.screentypes=80x25,80x25bf,80x40,80x40bf,80x50,80x50bf
>>>> display.focus=4
>>>> display.brightness=20.00%
>>>> display.screen_on=250
>>>> display.screen_off=0
>>>> display.vblank=off
>>>> display.kbdact=on
>>>> display.msact=on
>>>> display.outact=on
>>>>
>>

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