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How do I stop updates from breaking my display?

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I am running Ubuntu 20.04.2 lts on a laptop with an Nvidia gtx965m gpu and an asus zenscreen usb monitor on the side.

I just ran sudo apt-get update And now I am experiencing the following display issue:

The built in display is locked to weird refresh rates like 60.01 hz and the whole screen looks like it is shaking. During boot, the shaking does not start until the os is loaded. None of this is impacting the usb monitor at all.

I have tried resetting graphics drivers, building a new display profile to force that output device to display in 1920x1080-60hz, reinstalling the os.

The reinstall only worked if I did it offline and even then the issue came back when I re-ran the update.

Update: After several rounds of reinstalling the OS and updating it one package at a time until something brakes, I have learned a few things.

  1. It has nothing to do with display settings. The refresh rate is 60.01 before running updates and all is still well.

  2. The culprit is a kernel update. all of the packages that have caused the issue are some sort of kernel update.

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