Thank you for help. After tries to connect devices one-by-one our electronic engeneer fixed something related to power supply connection for devices and hubs, now system seems to be stable. On Wed, Nov 24, 2010 at 9:33 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 24 Nov 2010, Alex Sinchenko wrote: > >> >> Try again, without ehci-hcd and with only one hub plugged in, no other >> >> USB devices. Let's see what happens then. >> >> > I will try that ASAP. >> >> I tried to run Linux with only hub connected - no errors, without and with ehci > > Good. Now do the same thing, but this time plug in the hub before > booting. > > If that works, try plugging some of the other devices into the hub > before booting. > > Go all the way up to the point where you have one hub with two sound > cards and two serial converters attached before the system starts. > Let's see how that turns out. > > Alan Stern > > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
