On my system, I found that the immediate cause of those messages was running apcupsd, with the default configuration of trying to talk over a serial cable, but without a UPS connected to it. Even if it was otherwise configured for USB, I also had to remove the "DEVICE /dev/ttyS0" line to fix the IRQ errors.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1781016 Title: Slow flood of do_IRQ: No irq for vector To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1781016/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
