> On Thu, 18 Mar 2021 at 12:44, Mark Woolfson <mrw at mwcltd.co.uk> wrote: > >> Hello, >> >> >> >> I wonder if you could help. >> >> >> >> I have a requirement to load CentOS 7.3 on to a server. I have the >> distribution on a bootable USB key. >> >> >> > What kind of server? This is a hardware issue and is going to need to know > what kind of CPU and what the firmware on the system is. My uninformed > guess is that the kernel is finding a large number of CPUs (either virtual > or real) and it is probably only fixed by the kernel/software in 7.4. [A > test would be to see if 7.2 also has this issue and if not then walk > through the kernels until it does.. then look at the change logs for when > it starts working again.] > > Or I would try installing with a smaller number of CPUs with a command > line > entry like > > maxcpus=16 (if this system has 82+?) > > >> >> CentOS boots to the first menu but when I select the option to install >> almost immediately I get the error below: >> >> >> >> NMI watchdog: BUG: soft lockup - CPU#82 stuck for 23s! >> [system-udevd:1221] Is this an AMD system? I remember such a message somehow but don't know where I saw it. Can it be that the system is newer than what was supported with CentOS 7.3? Regards, Simon