Ok, googling around, i found this "Transmitted signal levels are 0.00.3 volts for low and 2.83.6 volts for high in Full Speed and Low Speed modes, and +-400mV in High Speed (HS) mode." Ok, power vary if different speed is selected, but isn't possible to add a feauture to ehci module to auto select lower speed if there isn't enought power to reach th HighSpeed mode? I think that's usefull for a lot of unskilled people that don't know how to compile a kernel to workaroud this problem. If u want i can spend my time as beta tester, i haven't required programming skill to do it myself. Best regards.
--- topo gigio <[EMAIL PROTECTED]> wrote: > LoL, > well thanks to all for your answers, it's funny > that's a power problem, notbooks should must be > portable but i must plug too many porwer cords to > work > whit it around the world ^^ > But... if, like u say, this is a power problem, why > the same device (a stupid lexar usb pen drive) work > whitout problems under windows? (Well i must verify > if > it really works at 2.0) > And why, if i use only the ohci driver, all works > well > in linux, with usb 1.1 speed (i don't know if usb > 1.1 > require less power than usb 2.0)? > Best regards > > > --- David Brownell <[EMAIL PROTECTED]> wrote: > > > On Tuesday 08 January 2008, topo gigio wrote: > > > module, last week i had bought an pcmcia carbus > > card > > > with usb 2.0 and firewire ports based on ALi > > chipset. > > > If i use only the ohci driver, all ports goes > well > > and > > > i can use it without problems (but as usb 1.1). > > > When i use the ehci driver, i can't mount any > pen > > > drive or something like that. > > > > As Alan pointed out, you're getting fault codes > > which > > indicate electical trouble. > > > > Most Cardbus adapters like that one come with an > > external power supply, since not much power is > > available through the PCMCIA connector. Were you > > providing enough power to the card? > > > > - Dave > > > > - > > To unsubscribe from this list: send the line > > "unsubscribe linux-usb" in > > the body of a message to [EMAIL PROTECTED] > > More majordomo info at > > http://vger.kernel.org/majordomo-info.html > > > > > > ___________________________________ > L'email della prossima generazione? Puoi averla con > la nuova Yahoo! Mail: > http://it.docs.yahoo.com/nowyoucan.html > - > To unsubscribe from this list: send the line > "unsubscribe linux-usb" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at > http://vger.kernel.org/majordomo-info.html > ___________________________________ L'email della prossima generazione? Puoi averla con la nuova Yahoo! Mail: http://it.docs.yahoo.com/nowyoucan.html - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
