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Date:      Wed, 8 Nov 2023 21:57:21 +0200
From:      "Dr. Amr Osman" <dr3mro@gmail.com>
To:        freebsd-hackers@freebsd.org
Subject:   Brightness 100% when connect or disconnect charger
Message-ID:  <CAEYFr1DV%2BHpBpUX9gs4CCM887aJnJybJMozPct6X=kFgw8g_ZQ@mail.gmail.com>

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Hello,
I have installed freeBSD 14rc4 on Lenovo Thinkpad x270 and xfce desktop and
when I
1) connect the charger
2) disconnect the charger
3) resume from suspend
The LCD brightness is 100% which is really disturbing specially when I am
in dark room

hw.acpi.video.lcd0.economy: 20
hw.acpi.video.lcd0.fullpower: 30
I have loaded acpi_video and acpi_ibm
and if I tried to adjust brightness it goes suddenly from 100 to 20 if I
press fn +f5/f6

What can I do to fix this issue?

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<div dir="auto">Hello,<br>
I have installed freeBSD 14rc4 on Lenovo Thinkpad x270 and xfce desktop and when I<br>
1) connect the charger<br>
2) disconnect the charger<br>
3) resume from suspend<br>
The LCD brightness is 100% which is really disturbing specially when I am in dark room<br>
<br>
hw.acpi.video.lcd0.economy: 20<br>
hw.acpi.video.lcd0.fullpower: 30<br>
I have loaded acpi_video and acpi_ibm<br>
and if I tried to adjust brightness it goes suddenly from 100 to 20 if I press fn +f5/f6<br>
<br>
What can I do to fix this issue?</div>

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