On 03/12/2018 09:56 PM, Carsten Mattner via arch-general wrote:
Any BIOS updates or kernel updates recently (4.15.8)?
Try with 3.16 or 4.9 or another old lts kernel from archive.archlinux.org
just for testing (not production).
It's more likely that the kernel regressed rather than IRQ issues popping
up suddenly. It's possible but less likely.
No BIOS updates. As far as kernel updates, I do those all the time, so
not sure that would be the cause.
After doing some digging, though, I did "cat /proc/interrupts", and this
line stood out, for having an astronomically high number:
CPU0 CPU1 CPU2 CPU3
...
16: 2424156658 0 0 0 IO-APIC 16-fasteoi
uhci_hcd:usb5, parport1
I have an old PCI card in the machine that's powers an old parallel port
printer I used to use with it. Perhaps that's failing. I don't need
the card anymore, so I might as well try taking it out and see if that
makes things better. If not, I'll be back. :-)
Thanks,
DR
