brightness management on odroid n2+ is possible ?

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alex_biancograt
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brightness management on odroid n2+ is possible ?

Post by alex_biancograt »

Hello everybody !

in other x86 boards I usually use "xrandr" for brightness management...

but on odroid n2+ it has no effect...

maybe it will be the "arm" platform not yet supported ??!!

does anyone know the "software way" to manage screen brightness ??

thank you all !

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tobetter
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Re: brightness management on odroid n2+ is possible ?

Post by tobetter »

What's the kernel version running now? Please do share the output of "uname -a" .

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Re: brightness management on odroid n2+ is possible ?

Post by mctom »

xrandr is a X display server utility.
I'm guessing your system image uses Wayland instead of X, because no good X display drivers exist for this GPU.

So you'll have to find a wayland-compatible method to adjust screen brightness. I'm sure it's possible.
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alex_biancograt
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Re: brightness management on odroid n2+ is possible ?

Post by alex_biancograt »

@ tobetter...

Code: Select all

uname -a
Linux odroidn2 5.17.5-meson64 #22.05.1 SMP PREEMPT Sat May 28 08:20:29 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux

"hardinfo" says: display vendor: X.org v.1.21.1.3
Open GL vendor: panfrost
renderer: mali-G52 v.3.1 mesa 22.0.1.

thanks for the explanations !

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Re: brightness management on odroid n2+ is possible ?

Post by tobetter »

alex_biancograt wrote:
Thu Aug 04, 2022 12:42 am
@ tobetter...

Code: Select all

uname -a
Linux odroidn2 5.17.5-meson64 #22.05.1 SMP PREEMPT Sat May 28 08:20:29 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux

"hardinfo" says: display vendor: X.org v.1.21.1.3
Open GL vendor: panfrost
renderer: mali-G52 v.3.1 mesa 22.0.1.

thanks for the explanations !
It does not look like the kernel from Hardkernel neither me. Would you let me know which OS is running with your ODROID-N2Plus?

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Re: brightness management on odroid n2+ is possible ?

Post by alex_biancograt »

@ tobetter...

sorry for my lack of accuracy !!
neofetch
neofetch
screenshot.png (165.4 KiB) Viewed 96 times
now armbian 22.05.1 is running on my machine...

but I can also run the native os of hardkernel, for me it is not a problem...

I could adjust the brightness and gamma settings from the monitor as well but I am

interested in how the operating system works !

thank you again...

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Re: brightness management on odroid n2+ is possible ?

Post by tobetter »

@alex_biancograt, I think the upstream kernel would not have the feature to manage the colours yet while Hardkernel's 4.9 kernel have. Please refer to the link for testing.
viewtopic.php?p=352048#p352048

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Re: brightness management on odroid n2+ is possible ?

Post by alex_biancograt »

i will try with hardkernel OS :D

thank you

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