I can confirm this issue on a Gigabyte GA-AX370-Gaming 5 (X370 chipset) with F4 bios and an AMD Ryzen 7 1700 CPU.
I moved my disks from an sandy bridge system with Kubuntu 16.04.2 installed and kernel 4.4.0-71-generic which boots fine on the new hardware. When I upgrade the kernel to 4.10.0-14-generic I get the handle_irq() spam at boot. With acpi=off I am able to boot but I get USB enumeration errors during boot and my wifi usb stick (AR9271 802.11n) stops working. I have only a GTX 770 installed in the PCI-E slots (using the nvidia 375.39 driver from apt). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1671360 Title: System doesn't boot properly on AMD Ryzen / Gigabyte GA-AB350-gaming-3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1671360/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
