Video problem, can anyone help me?

[silentheaven83]

Hi everybody,

can anyone help me understanding what is the problem of my MISTer?

I attached two videos. I'm using HDMI and the default background.

When it happens, normal reboot doesn't solve the problem, cold reboot does.
Thanks.

[breiztiger]

cold reset you mister please

[silentheaven83]

cold reset you mister please

Yes it does solve the problem but then it happens again randomly.

Is it an hardware problem?

[breiztiger]

yes it happens randomly to all i think

[silentheaven83]

yes it happens randomly to all i think

Can you please elaborate a bit more? Is it an hardware problem?

Monitor? SDRAM? HDMI port? MISTer itself?

[breiztiger]

mister is not make to change core "at the fly"

[silentheaven83]

You are telling me that this happens frequently when someone change the core on the fly without doing a cold reset bewteen?

[breiztiger]

sorgelig talk about that ... you can search if you want to learn more about

[Michael1260]

Yes, it can happens, no problem, it's rare but it happens

[bertnorg]

sometimes a reset doesn't clear the memory completely, it seems related to a hardware bug in the DE10-Nano.
just do a full reboot and you will be fine.

[silentheaven83]

Thank you, I was worried about an hardware problem.

[NML32]

I have multiple MiSTers and it happens to all of them. Like suggested above a power cycle or hitting the reset button clears it up.

[Sorgelig]

It's HW glitch in FPGA. Currently there are no other solutions except reset or power cycle. Hybrid FPGA is not designed to reload the cores on the fly originally.

[silentheaven83]

Thank you to everyone.