Initially, after several installations attempts, I finally installed Debian with KDE on an Intel NUC Computer without having any USB problems at all — for a full day. Then every several hours or so, it would have an acute catastrophe of systems failing. (and that was the forth installation in the last couple of days) At the same time, my HDMI monitor will suddenly show a checkerboard-like grid with flickering rows and columns across the screen, with the desktop partially obscured by this grid. The grid has about half-dozen columns, with each column appearing to have 16 cells, as if a sort of blurry character. some of the cells flicker at different rates, sort of like something communicating, or memory addresses etc. Rebooting works to resolve this problem.
ALSO the USB will go totally out, including all power to the mouse and keyboard (the light on the mouse and keyboard go out). The USB becomes ceases to function. At this point I have to shutdown the computer, then power back up. Everything is usually fine for several hours, then it happens all over again.
I’ve reinstalled the operating systems four times in the last couple of days. This last time I reinstalled, it actually worked perfectly for a full day, then it started the same problem again, then started crashing every few hours, and now every thirty minutes.
HARDWARE Intel NUC CORE i3-3217U w 8GB RAM, reported as “7.5 GB” using lsmem command. The computer does not any ps-2 mouse or keyboard option, nor does it have a VGA or DVI port (only USB-2, HDMI and Ethernet ports, no legacy hardware, no USB-3). MONITOR Viewsonic 24″ 1080p-HD with HDMI.
OS SOFTWARE * “Debian 10.4 BUSTER” with 4.19.0-9-amd64 kernel* with XFCE desktop, and now Debian with KDE desktop, with two installs of each of XFCE and KDE. I had the KDE working well for a day. I have not very little software: texlive-full, kile and focuswriter, and I use Firefox with Facebook and Youtube.
HARDWARE Kubuntu Desktop Tower: with 4GB RAM and old legacy motherboard Intel [email protected] 32″ Acer 1080p-HD monitor (this is my 2nd monitor). SOFTWARE Kubuntu 18.04 with 4.15.0-101-generic kernel x86_64. (the other computer has Debian)
I have a 2nd Computer, the Kubuntu Desktop Tower, that had nearly the same problem as the Intel NUC Computer. The Kubuntu Desktop Tower: experienced either Total USB failure starting a week ago. At the same time the monitor would either freeze up or go black, but not flickering in the weird grid pattern, just freezing up, but without the garbage-grid displayed over the top. Rebooting would work to resolve that USB problem.
However several days ago the total USB failure STOPPED, and then i only had USB-keyboard failure, only the USB keyboards went out. (I have 3 usb-keyboards, all went out, and EVEN after Rebooting and unplugging power for a minute. No usb keyboard would work.) I switched to a legacy PS-2 keyboard and it worked for a full day, then it too would either stop working, or a single key would repeat itself endlessly, forcing a reboot. And so this was when I brought my Intel NUC Computer out of storage and started installing Debian with either XFCE or KDE.
Now I have them networked together with a Ethernet Switch Box. Strangely my Kubuntu Desktop Tower has been working perfect for two days in a row, without any modification to the software. And, I am successfully using USB keyboard again. However, my Intel NUC Computer with Debian-KDE is acting up, now having total USB failure every 15 minutes. And, I cannot ssh into the machine either the Wired Ethernet Connection between Switch.
The only thing these two machines have in common is Linux (not the exact same kernel) and the same Power outlet.
Without doing anything to my Kubuntu Desktop Tower