After a about a decade with my old system, I had it. 8GB was not enough memory, especially when both my wife and I were logged in each with dedicated X session, and my motherboard memory could not be expanded.
There are only so many DL episodes one can listen to before coming to the conclusion that AMD is the way to go. But since I am no gamer, and my power supply is rated at only 400W (a decade ago I thought it was plenty) I went the integrated graphic route:
- CPU: AMD Ryzen 3 3200g
- Motherboard: MSI B450-A Pro MAX
- Memory: 32GB DDR4 3200Mhz in 2 sticks of 16GB each
Many moons have passed since I last replaced a motherboard, so it took me some time and lots of manual and youtube consulting, but I finally got everything to work… well…
From the get go, my Kubuntu 20.04 had a display issue. Periodically, after between 5 minutes to an hour, the screen when blank, sometimes with some green pixels at the top row, sometime not. Sometimes the screen color change its shade of gray when I move the mouse. When this happens the only way out was to kill the X session with Ctrl+Alt+Backspace, or restart the computer.
The only workaround that prevented this was to use the
nomodset kernel parameter, but this degrades desktop effects, and worst made it impossible to use a dual monitor setup.
See this ask-ubuntu q&a
Other things I tried but did not work:
- disable IOMMU in the BIOS as well as using the
- install the latest kernel from the Ubuntu Kernel Team
I must say I am disappointed. From @dasgeek and co. I got the impressions that AMD should just work. This is why I picked all AMD solution. Also this CPU is not new. It was launched a year ago. But even with the latest kernel this HW is still very flaky on my system.
Of course, I can’t rule out that I got some bad HW or that I did something wrong installing it. Am I the only one with this issue?