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Very slow login, finger gestures gone, sticky touchapd

in flag

On my Dell XPS 9520 (with 22.04 LTS), some weird things started happening when I booted on Ubuntu this morning. Reboot won't fix them.

  1. Login is extremely slow. I use howdy for face login, but as soon as it recognises my face the screen turns grey and stays like that for a minute. Password login is just as slow.
  2. Touchpad works intermittently. Sometimes it freezes and I have to give it 30 seconds to work again.
  3. Ubuntu 3- and 4- finger swipe gestures are gone. 2-finger scrolling still works.
  4. PC now gets too hot sometimes.

It was working fine until yesterday. The only changes I made in the meantime, which could have affected the system were:

  • Installed the Nvidia CUDA Toolkit (have now purged it but problem persists).
  • Enabled Canonical Livepatch.
  • Did a regular system update.

I have no idea what could be causing all of these issues, and it looks like the all appeared simultaneously. Unfortunately, I hadn't configured Timestamp so I can't revert my system to a previous state.

I sit in a Tesla and translated this thread with Ai:

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