USB not working

[dnlweijers]

I just received my JetKVM. Everything works except usb connection. I tried multiple ports, cables, cable orientations even, switching power and usb poort etc, removing the splitter and only from device to kvm, nothing works. Firmware is the latest. I use it with a Intel NUC Kit NUC8i3BEH. Does anyone know what to do???

[dnlweijers]

I tried power from socket, power from router usb port, multiple usb ports on host

[jdranchman]

Ditto. I'm trying to connect to a UGREEN NAS and the USB just doesn't connect whatever I've tried. Video is up but no USB connection for kbd/mouse.

[ym]

Could you confirm whether you have a DC extension connected?
Also, please provide the following outputs to help with the investigation:

cat /sys/kernel/debug/usb/ffb00000.usb/mode
cat /sys/kernel/debug/usb/ffb00000.usb/link_state
cat /sys/kernel/debug/usb/ffb00000.usb/testmode
cat /sys/bus/platform/drivers/dwc3/ffb00000.usb/power/runtime_status
cat /sys/bus/platform/drivers/dwc3/ffb00000.usb/power/control

[dnlweijers]

Could you confirm whether you have a DC extension connected? Also, please provide the following outputs to help with the investigation:

cat /sys/kernel/debug/usb/ffb00000.usb/mode
cat /sys/kernel/debug/usb/ffb00000.usb/link_state
cat /sys/kernel/debug/usb/ffb00000.usb/testmode
cat /sys/bus/platform/drivers/dwc3/ffb00000.usb/power/runtime_status
cat /sys/bus/platform/drivers/dwc3/ffb00000.usb/power/control

I don't have any extentions.
I believe the plobem is in the hardware, it also doesn't work on my new, high-end Windows laptop, again, only visuals, no keyboard and mouse.

As of the commands:

# cat /sys/kernel/debug/usb/ffb00000.usb/mode
t /sys/kernel/debug/usb/ffb00000.usb/testmode
cat /sys/bus/platform/drivers/dwc3/ffb00000.usb/power/runtime_statdevice
# cat /sys/kernel/debug/usb/ffb00000.usb/link_state
On
# cat /sys/kernel/debug/usb/ffb00000.usb/testmode
no test
# cat /sys/bus/platform/drivers/dwc3/ffb00000.usb/power/runtime_status
active
# cat /sys/bus/platform/drivers/dwc3/ffb00000.usb/power/control
on
#

[jdranchman]

When trying to use external power, the usb does not connect - ever - no matter what I try. Connecting using usb power from the UGREEN then it connects ok with usb emulation off.

Let me add - my use case is using a UI bridge and using usb power via splitter to power the kvm. This is nice but I can't get the usb to connect when the kvm is always powered on. To me this is manditory as I can't count on the controlled device to have power available.

[dnlweijers]

When trying to use external power, the usb does not connect - ever - no matter what I try. Connecting using usb power from the UGREEN then it connects ok with usb emulation off.

Let me add - my use case is using a UI bridge and using usb power via splitter to power the kvm. This is nice but I can't get the usb to connect when the kvm is always powered on. To me this is manditory as I can't count on the controlled device to have power available.

Thanks for the awsner, only, I dont really understand, could you explain it more easily?

[jdranchman]

Maybe I should open another issue. I thought my experience was the same as the OP but maybe not.

https://github.com/jetkvm/kvm/issues/979