Issues with suspend/resume

Hi,

Since upgrading from 1500061 I've been having issues with suspend. 
Firstly often the machine will restart when closing the lid (triggering 
suspend) but mostly USB-A issues. This appears to occur after you resume 
then plug in mains power. I get the following in dmesg.

ugen0.2: <Logitech USB Optical Mouse> at usbus0 (disconnected)
usbhid0: at uhub1, port 1, addr 1 (disconnected)
hms0: detached
hidbus0: detached
usbhid0: detached


Unplugging and plugging the device (mostly a mouse) does not work. The 
only resolutions come from rebooting or going again into suspend and 
plugging the mouse of power in before it starts up. I haven't found 
another way as yet to bring the USB-A ports back online. Note that the 
USB-C ports continue to work. Also note that if I get USB-A working 
again but suspending/resuming the laptop crashes and reboots the next 
time I unplug devices. Though I'm not sure it's the USB-A that's causing 
it, since I'm also unplugging USB-C devices at the same time.

This started on FreeBSD 15.0-ALPHA1 and now on ALPHA3. I have filed a 
bug report (id: 289396) however so far no activity so I'm looking for 
ways to debug this. Also DRM is compiled from the latest ports as of the 
21st (Last Sunday).

Note the laptop is a Thinkpad P1 Gen3 which has up until recently worked 
very well with suspend/resume. I've also run a full hardware test. Note 
that this has hybrid graphics mode with an Nivida Quadro T2000 with the 
following drm drivers.

drm-66-kmod-6.6.25.1500064_5
libdrm-2.4.123,1
linux-rl9-libdrm-2.4.123
nvidia-drm-66-kmod-580.82.07.1500064_3

I'm more than happy to assist in debugging this issue but I am unsure 
where to begin. I'm assuming compiling the debug kernel could help? How 
do I then capture relevant debugging information?

Note I have the same version (FreeBSD 15.0-ALPHA3) running on another 
laptop (Thinkpad T530) which appears to working well with 
suspend/resume. The other laptop doesn't have an Nvidia GPU. I'm 
suspecting this may be an issue with the Nvidia drm driver?

Hopefully this all makes sense. Happy to provide any other 
information/logging etc.


Kind regards
Ben