*** This bug is a duplicate of bug 1880041 *** https://bugs.launchpad.net/bugs/1880041
** Description changed: Note: I open this bug in order to try to report more infos with the command: apport-collect 1880380 When booting up Ubuntu 18.04 with a kernel version of 5.3.0-52 or later (including 5.3.0-53), everything seems to be working as usual. However, when I shutdown, the system will only soft shutdown, with the CPU still running at full power, forcing me to hold down the power button to fully power off affected systems. If I reboot, it will cause the system to hang and not respond. Either way, a hard reset or poweroff will be required, and this is not an option for systems being remotely accessed. It is not possible for me to collect kernel logs at this point, unless something wrong is happening in those kernel versions before the actual shutdown. It worked until mid may 2020. OS: Xubuntu 18.04.4 (amd64), CPU: AMD - Ryzen 3500G, motherboard: Asrock A320M-HDV r4.0 + Ryzen 3400G, motherboard: Asrock A320M-HDV r4.0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880380 Title: Failing to shutdown/power off or reboot on AMD Ryzen CPUs on kernel versions 5.3.0-52 and later To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-hwe/+bug/1880380/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs