Here is some additional information. I built upstream kernel 4.11-rc5 with CONFIG_PINCTRL_AMD=m CONFIG_DEBUG_PINCTRL=y CONFIG_DEBUG_GPIO=y
and blacklisted pinctrl-amd so as to able to boot that kernel and set up netconsole. Doing a modprobe pinctrl-amd then results in a crash (obviously) and output along the lines of what you can see in the attached files. Case A seems to be more common than B. In case B, the system can still be used for a few seconds before becoming unresponsive. ** Attachment added: "gb_pinctrl_amd.tar.gz" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1671360/+attachment/4856311/+files/gb_pinctrl_amd.tar.gz -- 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