On Thu, 7 Mar 2002 13:53, Dmitri wrote: > Quoting Dennis Gilmore <[EMAIL PROTECTED]>: <snip> > > My devices are not accepting the address allocated to them and i notced Can you try upgrading to 2.4.19-pre2? This is more likely to be a timing problem than a power problem.
> > in the lines c:* that max power is 0mA i know the hubs have 500mA max > > power is there a setting i can set to see if this will fix the problem? > > There is no problem because 0 mA refers to the power _consumed_ from the > bus by the hub, and root hubs don't need power - they are already on the > main board and receive their power directly from the PC's power source. More specifically, this is the maximum power that the device may draw from the upstream hub. It in no way actually indicated how much power is being used. Most devices just report it as a fixed field. > If you have a bus-powered hub then you will see something like this: > > T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 2 Spd=12 MxCh= 7 > D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > P: Vendor=0451 ProdID=1446 Rev= 1.00 > C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA This may be should be 500mA? Otherwise how can the downstream ports provide 100mA each? Not that firmware designers are big on descriptor accuracy anyway... 100mA would make sense for a self powered hub. Brad Brad _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
