Getting the exact same error on Lubuntu 20.04.2 after update to kernel
5.11.0-25-generic (x86_64)
Boot is stuck at "Finished update UTMP about system runlevel changes". No login
screen and no GUI.
After doing Ctl+Alt+F1 , logging in as a sudo capable user and starting
LxQt with 'startx', the GUI appears and works. But the fonts are huge
and windows are extremely zoomed in.
Tried to reinstall NVIDIA drivers with
$ sudo apt-get remove --purge nvidia-*
$ sudo ubuntu-drivers autoinstall
and that is when the error trace quoted by Christopher Deverill appeared
Verified the version of libc6 as there had been some problems in the
past when it had bumped up to 2.31-0ubuntu9.3 when installing some other
packages. But it was only 2.31-0ubuntu9.2 which has never had any issues
with NVIDIA 340.108 on this system
$ dpkg-query --list | grep libc6
ii libc6:amd64 2.31-0ubuntu9.2
amd64 GNU C Library: Shared libraries
ii libc6-dev:amd64 2.31-0ubuntu9.2
amd64 GNU C Library: Development Libraries and Header Files
ii libc6-i386 2.31-0ubuntu9.2
amd64 GNU C Library: 32-bit shared libraries for AMD64
There are absolutely no issues when booting into kernel 5.8.0-63-generic
Grub has always had kernel parameters to avoid NVRM Warnings in dmesg
GRUB_CMDLINE_LINUX="video=vesa:off vga=normal"
NVIDIA flash has already been turned off with
$ sudo nvidia-xconfig --no-logo
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https://bugs.launchpad.net/bugs/1938978
Title:
nvidia-340 kernel module failed to build (ERROR: Kernel configuration
is invalid)
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