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Debian 10 & 32 Inch 4K Monitors

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newb2debian
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Joined: 2018-02-11 14:25

Debian 10 & 32 Inch 4K Monitors

#1 Post by newb2debian »

I was using Debian 10 on an Intel NUC8i7BEH with dual 24 inch monitors and everything was working flawlessly for months and months. I ordered 2 new Dell S3221QS 32 inch 4K monitors to use with the NUC. Interestingly, when I power on the NUC, I get no video on both monitors at all. I can see the hard drive light on the NUC as if the computer is booting. When the hard drive light stabilizes out, with no video on either monitor, I enter the hard drive password. Low and behold, the login screen appears in what seems to be 4K. I enter my username and password and guess what, no video on both monitors at all. I'm not so much interested in the 4K as I am setting the monitors to 2K. How do I get video to display on the monitors? Am I missing something? Any suggestions would be most helpful. Thank you.

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Re: Debian 10 & 32 Inch 4K Monitors

#2 Post by Aki »

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Re: Debian 10 & 32 Inch 4K Monitors

#3 Post by argentwolf »

Or maybe the Dell monitor(s) are not supported https://compatibleproducts.intel.com/Pr ... MID=126140 .
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Re: Debian 10 & 32 Inch 4K Monitors

#4 Post by CwF »

The detection and fallback is not that smart. Likely the nuc can't drive dual 4k and instead of finding a lower resolution it just fails. Explore adding a xrandr script to define 1080 on both. You may be able to step into a good config with only one connected, change to 1080, then add the second...

newb2debian
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Re: Debian 10 & 32 Inch 4K Monitors

#5 Post by newb2debian »

So I updated the NUC's BIOS to the latest at the time of this post dated 6/21/2021. I've tried everything I can think of to get the video to display with no joy vice creating a xrandr script (I'm not too good at that). Anyway, I've had to revert back to an older computer I have, not a NUC of any type, and able to get 2560x1440 (16:9) on both monitors on Linux Mint. Problem solved for now. I'll have to find a use for the NUC; it's a powerful little thing. Too bad I couldn't get the NUC to work in dual 2560x1440 at least. Such is life I guess.

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