I have two Lenovo P50 ThinkPad machines, only one of which had this issue (even after making the BIOS and Kernel on both exactly the same).
But I've managed to solve it on the machine that wasn't working correctly by going through all of my BIOS settings and making the non working machine match the working machine. I'm not sure exactly what did it, but here are the things I changed to match working machine 1. power on with ac attach to disabled 2. virtualization to disabled disabled 3. Intel (R) SGX Control - current state to disabled working machine had software controlled disabled but I couldn't seem to select that. Non working machine had software controlled enabled but I changed it to disabled 4. UEFI/ Legacy boot changed from UEFI Only to Both 5. Network Boot changed from USB HDD to PCI LAN 6. Intel (R) AMT Control changed to disabled So, changing one (or a combination) of those settings fixed this issue for me! Just to add: in addition to not powering down correctly, my not working machine previously also wouldn't wake from suspend. That issue has also been resolved by making the above changes! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2059738 Title: Kernel 6.8 - Shutdown/Reboot hangs on Noble 24.04 To manage notifications about this bug go to: https://bugs.launchpad.net/snapd/+bug/2059738/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
