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Debian11-Cant change brightness on imac 2015

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Dewi1
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Joined: 2021-09-05 14:06

Debian11-Cant change brightness on imac 2015

#1 Post by Dewi1 »

Im using debian 11 on imac 2015 ,whether on kde or gnome, I cant change brightness by the brightness bar,I can only change it by the command "xrandr --output DP-1 --brightness 0.x". How can I change the brightness by the bar?

arzgi
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Re: Debian11-Cant change brightness on imac 2015

#2 Post by arzgi »

Hello!

I don't use kde, gnome or iMac, but xfce. Try clicking with right button, if you see some menu, There might be configure or something like.

Try that first. There are other ways,using command line.

Dewi1
Posts: 2
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Re: Debian11-Cant change brightness on imac 2015

#3 Post by Dewi1 »

arzgi wrote: 2021-09-05 14:41 Hello!

I don't use kde, gnome or iMac, but xfce. Try clicking with right button, if you see some menu, There might be configure or something like.

Try that first. There are other ways,using command line.
I clicked and found nothing able to change the brightness

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stevepusser
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Re: Debian11-Cant change brightness on imac 2015

#4 Post by stevepusser »

So, I would guess that's a video driver or processor issue...yet you give us no hardware information. Maybe you just need some firmware, but we don't know!

install inxi and report the output of "inxi -G", please.
MX Linux packager and developer

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