On 9/25/24 20:56, Jeffrey Walton wrote:
That is a very interesting finding. I thought the external hubs would
auto-configure to the highest version provided by the host. I would
not expect the machine to hang or crash in that particular
configuration. Do you think it is due to cheap hardware?
I should read the USB spec to try to understand what is happening, but
I am too lazy at the moment...
Jeff
i haven't found motherboard manual on Internet, 6 usb ports are
available at back panel of pc case, they look same, one is correct, one
is wrong, i haven't tested with other 4
all usb devices, including those connected to external usb hub, work
well within 12 hours so that i can ignore "usb 1-3: device descriptor
read/64, error -71"
i bought pc in 2015 from second-hand dealer, it was old even in 2015, i
am not sure if usb cabling inside case is damaged. external usb hub is
pretty new
i have tested 12.7 with both kernel 6.1.0-17 and 6.1.0-25, with correct
usb setting, both are ok after 12 hours
