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This is a regression in Ubuntu 20.04. Anybody who has nvidia-driver-470 and updates to kernel version 5.11.0-34-generic will experience black screen. A temporary walkaround is to log in to a TTY (Ctrl+Alt+F2) and remove all nvidia-related packages:
sudo apt purge nvidia-driver-470 nvidia-kernel-common-470 ...
You can just type sudo apt purge nvidia and hit ↹...
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Seems like today's update to 5.3.0.4 and xserver updates fixed the issue!
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I had the same issue today, you should just use the appcenter to install 390 or even 430, the performance difference shouldn't be noticable. Were just going to have to wait a little while while the kernel team sorts all the issues around 5.3
Hope you stay with us!
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Ooooh! I might have just figured something out. I think this has something to do with LightDM starting before the nvidia driver loads. If I do not login, and first drop to command line using ctrl alt f1, then sudo service lightdm stop, then start it up again, it seems to work correctly. At least it did a couple times in a row for me now. I'll post here again ...
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i dont know what is producing the gigabytes of error in syslog
is a similar question.
I have posted details on a bug here. It is related to VLC (and perhaps other video players).
The bug was not solved. But as a way to stop the output, closing VLC apparently works. As per messages in the bug thread, and my own experience, avoiding having a playing video ...
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