Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

[Alexandre Rossi <alexandre.rossi@gmail.com>]

>> I'm experiencing red blinking pixels in dark areas in the displayed
>> Xorg picture on my TV connected using a HDMI cable.
>
> can you test with another HDMI cable? Just because the HDMI cable works
> under Windows or Linux with a different GPU does not mean it will work under
> Linux with your HD Graphics 630. I am no expert, but there are all sorts of
> complications like HDMI clock frequency and colour depths. Linux with your
> 630 might be negotiating an HDMI connection that almost works but that your
> cable cannot reliably support. I would try another HDMI cable to eliminate
> it as an issue. Bad or marginal HDMI cables are a common problem.

With another HDMI cable, I have the same symptoms.
With the same cable, TV, and computer, under Windows, picture is perfect.

Alex