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691
October 27th, 2022 08:00
Optiplex 5400 AIO Ubuntu 20.04 HDMI IN not work
Hi .
I have optiplex 5400 AIO that shipped with ubuntu 20.04 pre-installed , this model have HDMI OUT and HDMI IN . When i try to connect my laptop on HDMI IN , the laptop find the dell monitor , but the AIO not switch from button to HDMI IN ( not work ).
How i make HDMI IN work ?
i have try with windows 11 and all work fine .
PS. the Dell support in Greece , tell me all the time to install windows version of on-screen-display application via wine , but this not work.
Thank you a lot
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bradthetechnut
7 Technologist
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8.9K Posts
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October 27th, 2022 16:00
It looks like there should be a button below the monitor, on the right, that changes inputs.
https://youtu.be/3YPsG6CWNA8
nkatsarakis
2 Posts
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October 28th, 2022 00:00
hello .
Yes i know , but it is not work on ubuntu .
It missing ( on screen display application ) from factory ubuntu os 20.04
bradthetechnut
7 Technologist
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8.9K Posts
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October 28th, 2022 13:00
I'm not as familiar with Ubuntu, so hopefully somebody more familiar with Ubuntu answers.
Even so, I can't picture an OS blocking input selection. We'll have to see what comes.
motiontwister
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December 21st, 2022 02:00
Hi, did you resolve your problem? I've also been trying to get the WMI button to work on a 7400 (certified for the same ubuntu version). I even manually installed the oem kernel and modules that are supplied by Dell for focal fossa, but I still can't get the HDMI IN port to function.
If anyone's scratching their head over the same issue, you can find the oem kernel here, unpackage it in a folder in your home dir, then use sudo dpkg -i *.deb to install the various components. If you're installing plain 20.04 LTS, the installer should find the oem kernel and moduled for your certified device. And if you have 20.04 installed, then double-check if you're definitely not on the oem kernel already.
I can confirm that unfortunately the Dell oem drivers are not available on higher generic kernels such as the 5.19.x that kinetic kudu comes with. I always thought that oem drivers would eventually be merged in future kernels, but not sure that goes for non-oem kernels!