[SOLVED] 2nd monitor regularly goes black

[Kawahoser1952]

I am using an older Dell XPS Laptop. Just installed Kubuntu 20.04. I have a 2^nd monitor connected. It occasionally will black out for a second, an HDMI connection logo appears for a second, then it reconnects. Happens regularly. I tried using different cables and a different monitor. No difference. When the system was a Windows 7 PC, the hardware worked perfectly. Any idea what it might be and the fix?

Here are the specs:

• Operating System: Kubuntu 20.04
• KDE Plasma Version: 5.18.5
• KDE Frameworks Version: 5.68.0
• Qt Version: 5.12.8
• Kernel Version: 5.4.0-58-generic
• OS Type: 64-bit
• Processors: 8 × Intel® Core™ i7-2670QM CPU @ 2.20GHz
• Memory: 7.7 GiB of RAM

Thanks for any help.

[oshunluvr]

Looks at these logs for error messages:

/var/log/Xorg.0.log
~/.xsession-errors

Might be a poor video driver choice. What video card are you using and driver?

[Kawahoser1952]

Ok.. fixed issue. It was the HDMI Cable. I was using an older (thin) HDMI cable. I switched it out for a high quality cable (much thicker and better connectors). Problem solved.

Thanks for the help. Appreciate it.