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Grub and ubuntu HDMI No Signal

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I have dualboot windows and Ubuntu. Whenever I power on the pc the grub come up, and it does! but the monitor shows hdmi no signal, until it boots into windows by default. After booted into windows I restart it and finally shows me the grub, and I can choose ubuntu. Idk if it's related but The hdmi gives no signal also after suspend, I do am able to wake him back, but the monitor says no signal.

I have an nvidia rtx 2060. I thought it was a problem of not recognizing my monitor, but now that it does (I disabled secure boot), it's still the same.

Is there anything I can do?

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