you can see in image it shows on screenshot also. It is just a one pixel. Sometimes it shows only on app, like edge, gnome software. when i open overview it just goes off. position of pixel does not change at all and it always appear on same spot. Also, it doesn’t show up on mouse pointer
System information:
Lenovo Thinkpad E14 gen 5 AMD with internal graphics
fedora 41 workstation
I think it would have to be bad memory. Unfortunately, it is probably the memory in the GPU, so I don’t expect Memtest86+ would find it. If your laptop is still under warranty, maybe you can get it replaced/fixed?
To verify it is not in the software somehow, I guess you could test your PC by booting from a Live image?