Hi, On Mon, Aug 21, 2023 at 12:39:02PM +0200, Kamil Paral wrote: > = Summary = > A Thinkpad T480s laptop with a Thinkpad Thunderbolt 3 Dock connected > can no longer resume from suspend. The problem was introduced in > e8b908146d44 "PCI/PM: Increase wait time after resume". Thanks for the detailed description! There was follow up patch that made the timeout shorter for slow links, I wonder if you could try that first and see if that changes anything? It is this commit in the mainline: 7b3ba09febf4 PCI/PM: Shorten pci_bridge_wait_for_secondary_bus() wait time for slow links That should at least make the resume faster too but let's see.