I have recently installed SUSE Linux 10.1 on my PC. At first I had no
trouble with USB and could access my Sony memory stick without any
problems. However, a few days ago disaster struck. Suddenly the memory
stick was no longer recognised and along with it other USB accessories,
e.g. a memory card reader. Strangely, a NEC diskette drive attached via
the rear USB sockets is still working fine.
Now, I can't blame Linux for this problem, for the USB peripherals are
no longer visible in Windows either. Indeed, I have had similar trouble
in the past, when the USB ports have mysteriously disappeared (and I was
only using Windows). Even more mysteriously, they have then after weeks
or months suddenly come back, without my having done anything!
With Linux I had hoped that I might get more insight into what is going
on, however I cannot say that I am much the wiser. All I can report is:
1) /proc/bus/usb/devices is not defined.
2) lsusb reports
Bus 002 Device 003: ID 0409:0040 NEC Corp. USB UF000x
Bus 002 Device 001: ID 0000:0000 OHCI Host Controller
Bus 004 Device 001: ID 0000:0000 EHCI Host Controller
Bus 001 Device 001: ID 0000:0000 OHCI Host Controller
Bus 003 Device 001: ID 0000:0000 OHCI Host Controller
3) At startup there are messages like:
usb usb4: new device found, idVendor=0000, idProduct=0000
usb usb4: new device strings: Mfr=3, Product=2, SerialNumber=1
usb usb4: Product: EHCI Host Controller
usb usb4: Manufacturer: Linux 2.6.16.13-4-default ehci_hcd
usb usb4: SerialNumber: 0000:00:03.3
usb usb4: configuration #1 chosen from 1 choice
hub 4-0:1.0: USB hub found
usb 4-3: new high speed USB device using ehci_hcd and address 2
usb 4-3: device descriptor read/64, error -32
usb 4-3: device descriptor read/64, error -32
usb 4-3: new high speed USB device using ehci_hcd and address 3
usb 4-3: device descriptor read/64, error -32
usb 4-3: device descriptor read/64, error -32
usb 4-3: new high speed USB device using ehci_hcd and address 4
usb 4-3: device not accepting address 4, error -32
usb 4-3: new high speed USB device using ehci_hcd and address 5
usb 4-3: device not accepting address 5, error -32
Googling for help, I see that many other people have had similar
messages (and even the phenomenon of USB ports disappearing). But I
haven't found any suggestions for a solution.
My own suspicion, because of the sporadic nature of the trouble, is that
it is a hardware problem. But maybe someone here has a better idea. Does
anybody know what the error messages mean? If there are no solutions, I
suppose I'll just have to wait and hope that USB decides to come back
again some day, as it has in the past.
Many thanks for any help.
Eric
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