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dual monitors sometimes fail

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ymajoros

I have 2 monitors attached to a GP108 GeForce GT 1030.

  1. an AOC32'', 2560x1440 on a dvi port
  2. an 52'' Chiq 4K tv, 3840x2160 on hdmi

I'm normally using nvidia proprietary drivers, 495.46.

Sometimes, my tv stops working (no signal). Typically, it comes back after unplugging and replugging the hdmi cable twice. Today, it didn't.

After booting, on the login screen, both screens are typically working. Today, the AOC32 one didn't after logging in.

Combinations of rebooting and unplugging of cables in random orders make it come back. In every case, trying to go from the weird frequencies it selected (25 Hz for my tv, ...) had the effect that one of the screens went off. Selecting other settings allowed to switch to the other screen, but they wouldn't both turn on at the same time. Clicking "apply" in my display settings typically switched to the other monitor. In some cases, both screens went back or froze to the "Keep settings?" screen, and I had to hard reboot.

Tried the Nouveau driver, but one of the screens was always flickering badly, and the system was just too slow / unusable. Got screen flickering from the proprietary driver at some point, but at least it magically went away at some point.

Now, both screens are on. Didn't dare to try anything anymore.

Any idea on how to approach this?

UPDATE: now tried with version 510 of nvidia drivers. Monitor still fails, have to unplug/replug it. Wayland does work better (chrome still not really usable, crashes regularly).

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