Annoying stripes in the frame update (AMD Ryzen 3200g APU)

I have a graphics problem and I don't know why, someone told me that Ubuntu does not have support for vega 8 graphics, and my PC has a 3200g Ryzen APU.

Frequently when changing frames (updating on a page or changing programs), horizontal stripes appear with parts of frames before the update, on other occasions they are black or white. This does not occur when I dual-boot into Windows.

1 Answer

I found a solution here (panariga's "Workaround 2") with which I could keep the IOMMU enabled in the BIOS and without needing any custom drivers.

Workaround 2:

Add iommu=pt to kernel command line in /etc/default/grub:

sudo nano /etc/default/grub

Edit the line beginging GRUB_CMDLINE_LINUX_DEFAULT to look like this

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash iommu=pt"

Update GRUB:

sudo update-grub

Reboot

reboot