Tried to install Ubuntu server on an older Dell server, but it failed. I received the exact same errors that was posted in another thread (and I don't have a way to copy the failure log) so I am copying the details from https://answers.launchpad.net/ubuntu/+question/669976.
As in the other thread, there seemed to be a time synchronization issue:
"E: Release file for http://.../InRelease is not valid yet (invalid for another 1h 59min 50s)."
However, I checked the BIOS system time - it was correct. This seems like an installer bug in 18.04 LTS. I just installed 16.04.4 without issue, and will upgrade from there.
If I had to guess where this error is coming from, I would guess that it is related to the fact that this DELL machine encodes system time as packed BCE and the 18.04 LTS Ubuntu installer is decoding it as something else? But that is just my guess
- - - - - - - -
here are additional error details (copied from +question/669976.)
- got a python traceback from curthooks.py, which seems to be called by unshare.
- highlights:
Unexpected error while running command: unshare --fork --pid -- chroot /target apt-get --quiet --option=Acquire::Languages=none --option=Dir::Etc::sourcelist=/tmp/tmpk_vnogkp/sources.list --option=Dir::Etc::sourceparts=/tmp/tmpk_vnogkp/sources.list.d update
Exit code: 100
finish: cmd-install: FAIL: curtin command install
Traceback:
File "/usr/lib/python3/dist-packages/curtin/commands/curthooks.py", line 191, in install_kernel
map_suffix = mapping[codename][version]
KeyError: 'bionic'
Status changed to 'Confirmed' because the bug affects multiple users.