>> Try also booting without 'quiet' and with 'debug earlyprintk'. > > Happy to try, but not sure how to do that
Worked out how to do it... Edited /etc/default/grub removed "quiet" and added "earlyprintk=vga debug" to GRUB_CMDLINE_LINUX_DEFAULT and ran update-grub. The bad news is that it hangs at the same point: [ 0.058517] CPU 1 irqstacks, hard=f75be000 soft=f75c0000 [ 0.058551] x86: Booting SMP configuration: [ 0.058583] .... node #0, CPUs: #1 I had a look in the BIOS and the only thing that looked vaguely interesting was "Execute Disable Bit" - "Intel Extreme Disable Bit Function. Supported CPUs can help protect from virus and malicious buffer overflow attacks", but that didn't make any difference. Had a read through the link Ben Hutchings sent (https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html) and ended up with: GRUB_CMDLINE_LINUX_DEFAULT="earlyprintk=vga,keep debug udbg-immortal ekgdboc=kbd" But that didn't give any more info. :( Thanks, LJ
