Re: Not Able To Use External Monitor with Laptop

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On 28/04/2022 20:17, Kenneth Marcy wrote:

On 4/27/22 15:49, Richard Kimberly Heck wrote:
Hi, all,

I'm having an odd problem. On two of my laptops, on which I've just done fresh installs, I cannot get the external monitor to work. Using either the XFCE display configuration tool, it shows up, but it's marked as 'disabled'. I do not seem to have the usual such tool under KDE, which is one of my puzzles.

The install was done the same way in both cases, and somewhat non-standardly, so I'm guessing I might be missing some package(s). I've had trouble using KDE with Wayland, so I installed the XFCE spin, then installed KDE via dnf, so Wayland does not get loaded, and is not even installed.

Graphics processor on this machine is AMD Renoir. It's a System 76 Pangolin.


What happens if you do the following series of steps?

1) disconnect the external monitor from the laptop, allow the monitor to continue running

2) restart the laptop and login, then allow it to boot up to a stable screen

3) plug the monitor cable back into the laptop

Does the monitor obtain the same image as is on the laptop, and allow you to use them together?

If you have no image look at the output of dmesg, there may be interesting kernel messages that
help investigate what is wrong.

Barry




Ken

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