2.6.38.5-rc1 usb problem

With 2.6.38.5-rc1 my usb-scanner will be not detected, with 2.6.38.4 it will.

System is Intel Q9550 SMP 64-bit

/var/log/messages ..

May  2 10:07:12 x1 klogd: [ 3030.380011] usb 3-1: new full speed USB device using uhci_hcd and address 16
May  2 10:07:27 x1 klogd: [ 3045.500013] usb 3-1: device descriptor read/64, error -110
May  2 10:07:42 x1 klogd: [ 3060.730008] usb 3-1: device descriptor read/64, error -110
May  2 10:07:42 x1 klogd: [ 3060.960012] usb 3-1: new full speed USB device using uhci_hcd and address 17
May  2 10:07:57 x1 klogd: [ 3076.080010] usb 3-1: device descriptor read/64, error -110
May  2 10:08:13 x1 klogd: [ 3091.310011] usb 3-1: device descriptor read/64, error -110
May  2 10:08:13 x1 klogd: [ 3091.540009] usb 3-1: new full speed USB device using uhci_hcd and address 18
May  2 10:08:23 x1 klogd: [ 3101.960009] usb 3-1: device not accepting address 18, error -110
May  2 10:08:23 x1 klogd: [ 3102.080009] usb 3-1: new full speed USB device using uhci_hcd and address 19
May  2 10:08:34 x1 klogd: [ 3112.500010] usb 3-1: device not accepting address 19, error -110
May  2 10:08:34 x1 klogd: [ 3112.500024] hub 3-0:1.0: unable to enumerate USB device on port 1

/var/log/messages of 2.6.38.4

May  2 10:17:56 x1 klogd: [   61.308007] usb 7-2: new full speed USB device using uhci_hcd and address 2
May  2 10:17:57 x1 klogd: [   61.472210] usb 7-2: New USB device found, idVendor=10c4, idProduct=ea60
May  2 10:17:57 x1 klogd: [   61.472213] usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
May  2 10:17:57 x1 klogd: [   61.472215] usb 7-2: Product: CP2102 USB to UART Bridge Controller
May  2 10:17:57 x1 klogd: [   61.472217] usb 7-2: Manufacturer: Silicon Labs May  2 10:17:57 x1 klogd: [   61.472219] usb 7-2: SerialNumber: 0001
May  2 10:18:08 x1 klogd: [   73.328009] usb 3-1: new full speed USB device using uhci_hcd and address 4
May  2 10:18:09 x1 klogd: [   73.842237] usb 3-1: New USB device found, idVendor=04b8, idProduct=010a
May  2 10:18:09 x1 klogd: [   73.842239] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
May  2 10:18:09 x1 klogd: [   73.842242] usb 3-1: Product: Perfection1640 May  2 10:18:09 x1 klogd: [   73.842243] usb 3-1: Manufacturer: EPSON

Please cc me, I am not subscribed.

Klaus

Am Montag, 2. Mai 2011, 10:31:17 schrieb Klaus Dittrich:

This must be an odd side effect. Can you bisect?

Regards
Oliver

I did some further tests.

When I switch on the scanner I gets not recognized. as described before.

If I then disconnect the usb-cable, of the already switched on scanner, and then reconnect it, the scanner gets recognized.

new full speed USB device using uhci_hcd
Product: Perfection1640
Manufacturer: EPSON

A timing problem?

My camera, has no problems.

new high speed USB device using ehci_hcd
Product: Canon Digital Camera
Manufacturer: Canon Inc.

Hope this helps to localise the problem.

Klaus