USB3 hub disconnecting - dropping adb connection

I'm probably jumping the gun, but I am hopeful.

I was having a problem where my new OctoFire hub was disconnecting quite often -- especially if using something like Android ScreenMonitor.

I think it is fixed.  I found the suggestion to disable the autosuspend here.

Edit the /etc/default/grub file and append to the GRUB_CMDLINE_LINUX_DEFAULT line:

usbcore.autosuspend=-1

Then run:

sudo update-grub
sudo reboot