On Mon, 4 Sep 2006, Eric Sprigg wrote: > I tried the "rmmod ehci-hcd" and -WOW- immediately my memory stick > reported itself and was accessible. Not only that, the memory card > reader was working fine too. "lsusb" now reports: > >>>> > Bus 001 Device 004: ID 054c:008b Sony Corp. Micro Vault 64M Mass Storage > Bus 001 Device 003: ID 054c:0105 Sony Corp. Micro Vault Hub > Bus 001 Device 001: ID 0000:0000 > Bus 002 Device 001: ID 0000:0000 > Bus 003 Device 002: ID 05e3:0760 Genesys Logic, Inc. Card Reader > Bus 003 Device 001: ID 0000:0000 > <<<<<
The drawback is that without ehci-hcd, these devices run only at full speed (12 Mb/s) instead of high speed (480 Mb/s). > The NEC diskette drive seems to have disappeared but that is no great > loss. I tried "modprobe ehci-hcd" in the hope that it might come back > but that left me worse off than ever with just: > >>>>> > Bus 004 Device 001: ID 0000:0000 > Bus 001 Device 001: ID 0000:0000 > Bus 002 Device 001: ID 0000:0000 > Bus 003 Device 001: ID 0000:0000 > <<<<< > > Another "rmmod ehci-hcd" brought the memory stick and memory card back > again. Phew! > > I haven't yet looked to see whether the devices are visible again in > Windows, probably not unless I disable EHCI there too. Do you know how > to do that? I could also try just unplugging the NEC diskette and see > whether the problem goes away. Maybe in the Device Manager pane of the System control panel you could disable the EHCI controller or its driver. > In the original post I forgot to mention that during booting the lights > on the memory stick blink, so it is certainly being spoken to. I also > omitted to say that the memory stick always worked fine on another PC. > > Any ideas as to what might be causing the problem and why, in my > previous (Windows) experience, it can go away again just as suddenly as > it came? It does sound like some kind of hardware problem. There's no way to know exactly what is wrong, but it shouldn't be too surprising that it comes and goes. > Anyhow, many thanks for the great tip, which has helped me a lot! You're welcome. Alan Stern ------------------------------------------------------------------------- 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 _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
