Yes, Frederic, My Hub is self-powered, Cable for smartphone looks ok, as long as I use the same one to connect to PC USB directly and it works. Seems like HUB is unable to work with MTP device. Also, I cannot try to connect smartphone with HUB cable becaue they are totally incompatible.
2017-01-22 16:05 GMT+02:00 Frédéric Marchal < frederic.marc...@wowtechnology.com>: > On Saturday 21 January 2017 07:47:25 Vadim Kolchev wrote: > > Hello, > > Just noticed an interesting thing > > Have an MTP Xiaomi smartphone device, all relevant packages installed. > > Also have M-Audio M-track HUB external soundcard with 3 USB ports. > > > > When connecting MTP device to HUB, have message in dmesg about Xiaomi, > but > > it does not mount and cannot be accessed. > > > > When connecting to USB port of the machine directly, it shows in > Nautilus. > > > > I really got used to HUB, is there a way to fix it? > > My experience with MTP and a Samsung smartphone is that the usb cable > gauge is > critical. > > A standard gauge 28 cable is too thin to provide a good power supply to the > phone. The device constantly disconnects until Android gives up claiming > that > it could not find a suitable program on the host computer to communicate > with. > > I tried gauge 24/28 cables. They give a somewhat better result but it is > far > from perfect. I suspect the cable is not entirely to blame at this point. > > Your hub or its cable could be unable to provide the required power supply > to > the smartphone. Is your hub self powered? > > Have you tried to connect the smartphone with the hub cable? It may be too > thin for MTP requirements. > > Frederic > >
