Have you received a lot of debugging messages at the output of dmesg when copying files?
Hung On 12/26/09 15:54, Paul Hartman wrote: > Hi, > > I got a Nokia N900 linux internet tablet/phone a few days ago, and > when I connect it in USB Mass Storage mode to a Windows Vista computer > I can write at 17MB/sec, but when I connect it to my Gentoo box my > writes are really slow, between 500-900kb/sec depending on if I mount > in "sync" mode or not. As far as I know it should be just a totally > standard/generic mass storage device. (there were no drivers or > software install needed in windows, it just worked) > > Other USB devices plugged into the same port go full speed, and AFAIK > everything appears as if it should be high speed USB 2.0. Has anyone > seen something like this before? I'm not sure what the deal is. It > takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1 > minute to do the same in Windows. > > I'm not sure about debugging USB or what the options are. Everything > I've used previously has worked without any hassle. > > lsusb -vv output for this device: > > Bus 001 Device 031: ID 0421:01c7 Nokia Mobile Phones > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > idVendor 0x0421 Nokia Mobile Phones > idProduct 0x01c7 > bcdDevice 3.16 > iManufacturer 1 Nokia > iProduct 2 N900 (Storage Mode) > iSerial 3 (censored) > bNumConfigurations 2 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 32 > bNumInterfaces 1 > bConfigurationValue 1 > iConfiguration 4 Max power > bmAttributes 0x80 > (Bus Powered) > MaxPower 500mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 8 Mass Storage > bInterfaceSubClass 6 SCSI > bInterfaceProtocol 80 Bulk (Zip) > iInterface 6 Mass Storage > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0200 1x 512 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 0x0200 1x 512 bytes > bInterval 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 32 > bNumInterfaces 1 > bConfigurationValue 2 > iConfiguration 5 Self-powered > bmAttributes 0xc0 > Self 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 6 Mass Storage > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0200 1x 512 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 0x0200 1x 512 bytes > bInterval 1 > Device Qualifier (for other device speed): > bLength 10 > bDescriptorType 6 > bcdUSB 2.00 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > bNumConfigurations 2 > Device Status: 0x0000 > (Bus Powered) > > > > dmesg output when it is plugged in: > > [2920730.031010] usb 1-4: new high speed USB device using ehci_hcd and > address 31 > [2920730.146451] usb 1-4: New USB device found, idVendor=0421, idProduct=01c7 > [2920730.146455] usb 1-4: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [2920730.146458] usb 1-4: Product: N900 (Storage Mode) > [2920730.146460] usb 1-4: Manufacturer: Nokia > [2920730.146462] usb 1-4: SerialNumber: (censored) > [2920730.146540] usb 1-4: configuration #1 chosen from 2 choices > [2920730.148268] scsi27 : SCSI emulation for USB Mass Storage devices > [2920730.148342] usb-storage: device found at 31 > [2920730.148345] usb-storage: waiting for device to settle before scanning > [2920735.150436] scsi 27:0:0:0: Direct-Access Nokia N900 > 031 PQ: 0 ANSI: 2 > [2920735.150567] sd 27:0:0:0: Attached scsi generic sg7 type 0 > [2920735.155882] sd 27:0:0:0: [sdg] Attached SCSI removable disk > [2920735.156449] usb-storage: device scan complete > [2920741.306353] sd 27:0:0:0: [sdg] 56631296 512-byte logical blocks: > (28.9 GB/27.0 GiB) > [2920741.306721] sd 27:0:0:0: [sdg] Assuming drive cache: write through > [2920741.307970] sd 27:0:0:0: [sdg] Assuming drive cache: write through > [2920741.307972] sdg: > > > And I mounted with these options: > /dev/sdg /mnt/usb vfat > user,sync,umask=1000,rw,noauto,check=relaxed 0 0 > > > thanks > paul > >
