[cc += Mika, linux-usb] On Wed, Aug 21, 2024 at 03:05:59PM -0700, Kenneth Crudup wrote: > Subject says it all, but to recap my laptop doesn't detect Thunderbolt > topology changes when resuming or coming out of hibernate; i.e., the only > time a TB topology change happens is if a TB cable is disconnected while > suspended or hibernated, but if one is connected, or a different TB setup > altogether is connected when the system resumes it doesn't notice the > topology change until I disconnect and reconnect. > > I'm currently running 6.10.6, but this has been going on for a while. > > [ 0.000000] DMI: Dell Inc. XPS 9320/0KNXGD, BIOS 2.12.0 04/11/2024 > ... > [ 0.136807] smpboot: CPU0: 12th Gen Intel(R) Core(TM) i7-1280P (family: > 0x6, model: 0x9a, stepping: 0x3) This commit went into v6.11-rc1 and will at least detect replacement of PCI devices (to a certain extent): https://git.kernel.org/linus/9d573d19547b However PCI is layered on top of (tunneled through) the Thunderbolt switching fabric and that's where the real problem likely is here. Maybe you can open a bug at bugzilla.kernel.org and attach full dmesg and lspci -vvv output in the working case (device attachment at runtime) and the non-working case (device attachment during system sleep). Does the machine wake up if you attach devices during system sleep? Are you suspending to ACPI S0ix, S3 or S4? Thanks, Lukas
