Hello, first of all thank you for sharing your BIOS settings, especially the "Thunderbolt BIOS Assist Mode". Based on this setting I've two issues depends if the Assist Mode is enabled or not.
* Thunderbolt BIOS Assist Mode: Enable [1] System is okey, no sluggish high CPU utilization (on first boot). Suspend works well without any issue. But if I connect the Thinkpad to an Docking station (Lenovo ThinkPad Pro Dock EU 130 W 40AH0135EU) I have always high CPU utilization on each boot. * Thunderbolt BIOS Assist Mode: Disabled [2] High CPU utilization on first/cold boot. Everything is fine after an reboot. Suspend doesn't work because high CPU utilization after wakeup. Based on the diff of both modes the biggest difference are the additional devices which are shown if the Assist Mode is disabled: -->8-- --- thunderbold_assit_on.dmesg Sun Nov 25 19:27:31 2018 +++ thunderbold_assit_off.dmesg Sun Nov 25 19:21:10 2018 +acpipwrres1 at acpi0: PXP_, resource for RP09 -acpipci0 at acpi0 PCI0: 0x00000010 0x00000011 0x00000000 +acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001 +ppb3 at pci3 dev 0 function 0 "Intel JHL6540 Thunderbolt" rev 0x02 +pci4 at ppb3 bus 6 +ppb4 at pci4 dev 0 function 0 "Intel JHL6540 Thunderbolt" rev 0x02: msi +pci5 at ppb4 bus 7 +"Intel JHL6540 Thunderbolt" rev 0x02 at pci5 dev 0 function 0 not configured +ppb5 at pci4 dev 1 function 0 "Intel JHL6540 Thunderbolt" rev 0x02: msi +pci6 at ppb5 bus 8 +ppb6 at pci4 dev 2 function 0 "Intel JHL6540 Thunderbolt" rev 0x02: msi +pci7 at ppb6 bus 59 +xhci1 at pci7 dev 0 function 0 "Intel JHL6540 Thunderbolt" rev 0x02: msi, xHCI 1.16 +usb1 at xhci1: USB revision 3.0 +uhub1 at usb1 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 +ppb7 at pci4 dev 4 function 0 "Intel JHL6540 Thunderbolt" rev 0x02: msi +pci8 at ppb7 bus 60 --8<-- Current system: 6.4-current Maybe somebody could guide me into any direction which I could look into to debug this issue (particularly with the docking station). Thanks and best regards, Thomas [1] https://dmesgd.nycbug.org/index.cgi?do=view&id=4610 [2] https://dmesgd.nycbug.org/index.cgi?do=view&id=4611
