19 Nov
2019
19 Nov
'19
5:04 p.m.
On Tue, 19 Nov 2019 18:42:31 -0400 George N. White III wrote:
EFI is looking like a red herring. Next on the list of suspects with access to both systems is power management. Have a look at USB Power Management for Linux 5.3 https://www.kernel.org/doc/html/v5.3/driver-api/usb/power-management.html (hasn't changed over many kernel versions). A good first step would be to disable USB PM and see if the issue goes away.
Thanks! That sounds like useful info. The kernel already had the mouse set to not ever suspend, but backing up to the hub, I see it set to "auto", so I disabled the hub PM and I'll see if I notice the mouse go away again.