I suspect this is a hardware decision and nothing can be done. If you buy a cheap USB1 hub and put that inbetween does it work then?
On Tue, 16 May 2006, Ezequiel Valenzuela wrote: > Hi. > > I've been using Linux for a long time now (very actively for almost 10 > years now), and now I'm stuck with a configuration problem that > hopefully should be possible to work around. > > I have a Linksys WUSB54GP wireless network adapter. It works well > under Windows, and even under Linux on my desktop PC (even using it as > a USB 2.0 device). But on my laptop it's a different story. To cut a > long story short (see > http://bugzilla.kernel.org/show_bug.cgi?id=6374), I'm getting > unexpected "USB disconnect" after a few hours (independently of how > much the device was used) when using this device with the ehci-hcd > module. Using the same device as a USB 1.1 device (uhci-hcd module) > yields no problems, so now I'm trying to move on and use this device > as a USB 1.1 one until hopefully some day everything starts working > under ehci-hcd. > > I've made this device work by removing (rmmod) the ehci-hcd module. I've > been doing all of this with gentoo's suspend2-sources-2.6.16-r4, > gentoo-sources-2.6.14- > r2; and also with vanilla kernels 2.6.16.16, 2.6.17_rc3 and 2.6.17_rc4. > > This is an excerpt from /proc/bus/usb/devices: > > T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 > B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 > D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=0000 ProdID=0000 Rev= 2.06 > S: Manufacturer=Linux 2.6.16-suspend2-r4 uhci_hcd > S: Product=UHCI Host Controller > S: SerialNumber=0000:00:10.0 > C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA > I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub > E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms > > T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=13b1 ProdID=0011 Rev= 0.04 > S: Manufacturer=Cisco-Linksys > S: Product=Wireless-G ProtableUSB Adapter > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=300mA > I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff > Driver=ndiswrapper > E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms > E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms > > As you see, the device is being used as a USB 1.1 one (Spd=12, Bus=01), > but USB 2.0 capable (Ver=2.00, and I've also seen this device recognised > as a USB 2.0 device on a previous configuration). > > The question I have for the nice people here is: how do I force the > kernel to use the uhci-hcd module instead of ehci-hcd *just for this > device*, considering that I want to plug other USB 2.0 devices to the > same machine? Is there any solution involving hotplug? (I think it's > probably "too late" for hotplug to determine which host controller > device to use). Can I edit some kernel source file (I haven't looked > into that yet) to force the other host controller driver (uhci-hcd) > instead of the automatically chosen one (ehci-hcd)? > > The ndiswrapper module is handling the device at a higher level, > although I suspect this doesn't have much to do with the problem. I've > seen identical behaviour showing when using the open source rt2570 and > even rt2x00 projects' modules instead. > > Hope someone can help me with this. > > Best regards, > > Ezequiel Valenzuela > > > ------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > [email protected] > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users > -- /------------------------------------+-------------------------\ |Stephen J. Gowdy, SLAC | CERN Office: 32-2-A22| |http://www.slac.stanford.edu/~gowdy/ | CH-1211 Geneva 23 | |http://calendar.yahoo.com/gowdy | Switzerland | |EMail: [EMAIL PROTECTED] | Tel: +41 22 767 9865 | \------------------------------------+-------------------------/ ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
