Dear supporter
We got a issue that the Ubuntu 18.04.1 LTS can’t reboot after some heavy CPU+MEMORY calc, it repro as " error: file ‘boot/grub/i6-pc/normal.mod’ not found".
And we found most of the files include system files are gong also.
It happened 4-6 times for the past month, we believe the hardware is ok, everytime it repro, we found CPU+MEMORY is very high for a long time, like 20 minutes even more.
so any issues related with it, anything we can do to avoid it?
Thanks
Louis.