[CentOS] Strange dots on monitor

[Yves Bellefeuille]

"vychytraly ." <vychytraly at gmail.com> wrote:

> I forgot to write that the dots start to appear only inside "Desktop
> Environment" (in my case Gnome), not for example in grub/bios. Today
> I tried to install ubuntu 16.04 and the green dots appeared there too
> (in Unity).

Video BIOS isn't the same as the usual video graphics:
https://en.wikipedia.org/wiki/Video_BIOS . I think that's still true
with UEFI.

In other words, I would suspect a hardware problem or a driver problem
rather than a software problem.

-- 
Yves Bellefeuille
<yan at storm.ca>