On Tue, Sep 24, 2024 at 10:38 PM hlyg <hlyg2...@outlook.com> wrote: > > it seems to be caused by wrong usb configuration > > kernel msg during boot: "usb 1-3: device descriptor read/64, error -71" > > if usb hub is connected to wrong usb port, after running about 12 hours, > 12.7 fails while 12.5 is OK > > connecting to correct usb port can fix it > > i get clue from freebsd, its installer refuse to work if wrongly connected
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
