Hi, I've bought a USB card reader, which is supposed to read SD and SDHC cards. While it detects SD cards properly, as I've tried to read a 32 GB SDHC card, it was detected as a 2 TB device, and the kernel was keeping resetting the bus (below). The other system does not have any problems reading 32 GB SDHC cards with this USB card reader. Is there any way to get this to a usable state? I'm using Linux 3.2. FYI, this is that device: http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=110667683019 [254064.056759] usb 2-1.2: new full-speed USB device number 15 using ehci_hcd [254064.152236] scsi22 : usb-storage 2-1.2:1.0 [254064.168770] xhci_hcd 0000:03:00.0: PME# disabled [254064.168806] xhci_hcd 0000:03:00.0: setting latency timer to 64 [254065.153001] scsi 22:0:0:0: Direct-Access USB2.0 CARD-READER 1.01 PQ: 0 ANSI: 2 [254065.155237] sd 22:0:0:0: Attached scsi generic sg1 type 0 [254065.157599] sd 22:0:0:0: [sdb] Attached SCSI removable disk [254065.180941] sd 22:0:0:0: [sdb] 4290410496 512-byte logical blocks: (2.19 TB/1.99 TiB) [254065.182051] sd 22:0:0:0: [sdb] No Caching mode page present [254065.182062] sd 22:0:0:0: [sdb] Assuming drive cache: write through [254065.184561] sd 22:0:0:0: [sdb] No Caching mode page present [254065.184573] sd 22:0:0:0: [sdb] Assuming drive cache: write through [254065.190177] sdb: sdb1 [254066.923446] xhci_hcd 0000:03:00.0: PME# enabled [254093.425302] xhci_hcd 0000:03:00.0: PME# disabled [254093.425336] xhci_hcd 0000:03:00.0: setting latency timer to 64 [254095.892305] xhci_hcd 0000:03:00.0: PME# enabled [254095.987348] usb 2-1.2: reset full-speed USB device number 15 using ehci_hcd [254127.066354] usb 2-1.2: reset full-speed USB device number 15 using ehci_hcd [254128.593230] xhci_hcd 0000:03:00.0: PME# disabled [254128.593264] xhci_hcd 0000:03:00.0: setting latency timer to 64 [254130.872283] xhci_hcd 0000:03:00.0: PME# enabled [254143.561229] xhci_hcd 0000:03:00.0: PME# disabled [254143.561268] xhci_hcd 0000:03:00.0: setting latency timer to 64 [254145.860290] xhci_hcd 0000:03:00.0: PME# enabled [254158.017569] usb 2-1.2: reset full-speed USB device number 15 using ehci_hcd [254188.968859] usb 2-1.2: reset full-speed USB device number 15 using ehci_hcd [254219.920036] usb 2-1.2: reset full-speed USB device number 15 using ehci_hcd [254250.871486] usb 2-1.2: reset full-speed USB device number 15 using ehci_hcd [254250.964849] sd 22:0:0:0: [sdb] Unhandled error code [254250.964859] sd 22:0:0:0: [sdb] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK [254250.964868] sd 22:0:0:0: [sdb] CDB: Read(10): 28 00 ff ba 77 80 00 00 08 00 [254250.964889] end_request: I/O error, dev sdb, sector 4290410368 [254250.964898] quiet_error: 128 callbacks suppressed [254250.964904] Buffer I/O error on device sdb, logical block 536301296 [254281.822567] usb 2-1.2: reset full-speed USB device number 15 using ehci_hcd # lsusb -v Bus 002 Device 015: ID 5136:4678 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x5136 idProduct 0x4678 bcdDevice 10.00 iManufacturer 1 Generic iProduct 2 USB2.0 Device iSerial 3 8120420080429000 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Device Status: 0x0000 (Bus Powered) -- Tomasz Chmielewski http://wpkg.org -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
