Bit of an unusual issue. I just updated Arch Linux, but I hadn't rebooted in a quite awhile so it might not have even been a recent updgrade.
I'm getting some weird artifacting at the bottom of my screen now. Without a wallpaper it's just a white rectangle: https://i.imgur.com/AZiUUQ8.png
When I have a wallpaper set with feh, there's a tonne of artifacting. It's like my smaller screen is superimposed on my larger screen (the wallpaper isn't suppose to cut-off half-way): https://i.imgur.com/UpU2BD0.png
This artifacting only appears on my "desktop", any applications that are above it do not get the square or artifacting. But when I close the application it is still there on the desktop.
This was working fine prior to me updating, and rebooting.
When I remove my xrandr command from i3's config file, I no longer get this issue (but my screens are in the wrong order).
Here is my xrandr command:
xrandr --output DisplayPort-0 --mode 1920x1080 --pos 1280x0 --output DVI-D-0 --mode 1280x1024 --pos 0x56
If it helps here's some information about my GPU (amdgpu):
[user@hostname ~]$ sudo lshw -c video *-display description: VGA compatible controller product: Ellesmere [Radeon RX 470/480/570/570X/580/580X] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0 bus info: pci@0000:22:00.0 version: e7 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=amdgpu latency=0 resources: irq:62 memory:e0000000-efffffff memory:f0000000-f01fffff ioport:e000(size=256) memory:fe800000-fe83ffff memory:c0000-dffff
Any ideas? I've messed about with my xrandr command for a couple of hours since it seems to be the root of the problem, but I've had no luck. Not sure how an update could have caused this.