ubuntu 20.04 monitor scaling broken

[Martin Gerdzhev]

I have 2 4k monitors and a 3rd with a lower res. When changing the scaling of the 4k monitors to 150 - 200%, they just turn off . This used to work on 19.01. If I set them to 125, then I get one big virtual monitor that I can scroll with the mouse and the screen positions change. When putting them back in the correct place, the scaled monitors turn off again.
PS. I use Nvidia drivers, so may be related to https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1873403 .

[Martin Gerdzhev (mgerdzhev)]

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[Martin Gerdzhev (mgerdzhev)]

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[Martin Gerdzhev (mgerdzhev)]

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[Martin Gerdzhev (mgerdzhev)]

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[Martin Gerdzhev (mgerdzhev)]

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[Martin Gerdzhev (mgerdzhev)]

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[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1873403, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.