[clug] A "mount" defeat - was Re: Persuading Debian to talk to an Android tablet via USB?

[Felix Karpfen]

On Thu, 21 Oct 2010 19:45:31 +1100, Hal Ashburner wrote:

> I think no fstab entry and automount is good for usb storage myself.
> It's what I use on my Debian Lenny box here. I'm sure you know what
> you're doing and why you're doing it.
> 
> Things to try might be alternative usb ports on the box.

Alas!

I do not know what I am doing nor why I am doing it.

But trying alternative usb ports did something (once).

The SD-Card reader mounted and dmesg gave the following output:

[ 1888.405627] usb 3-6: New USB device found, idVendor=1976, 
idProduct=1307
[ 1888.405633] usb 3-6: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
[ 1888.405636] usb 3-6: Product: USB Reader
[ 1888.405638] usb 3-6: Manufacturer: ChipsBnk
[ 1888.405640] usb 3-6: SerialNumber: 110074973765
[ 1888.405656] usb-storage: device found at 5
[ 1888.405658] usb-storage: waiting for device to settle before scanning
[ 1893.404316] usb-storage: device scan complete
[ 1893.404807] scsi 1:0:0:0: Direct-Access     ChipsBnk SD/MMCReader     
4081 PQ: 0 ANSI: 2
[ 1893.478427] ***Driver 'sd' needs updating - please use bus_type 
methods***
[ 1893.482064] sd 1:0:0:0: [sda] 7744512 512-byte hardware sectors (3965 
MB)
[ 1893.482809] sd 1:0:0:0: [sda] Write Protect is off
[ 1893.482817] sd 1:0:0:0: [sda] Mode Sense: 0b 00 00 08
[ 1893.482820] sd 1:0:0:0: [sda] Assuming drive cache: write through
[ 1893.485188] sd 1:0:0:0: [sda] 7744512 512-byte hardware sectors (3965 
MB)
[ 1893.485949] sd 1:0:0:0: [sda] Write Protect is off
[ 1893.485957] sd 1:0:0:0: [sda] Mode Sense: 0b 00 00 08
[ 1893.485960] sd 1:0:0:0: [sda] Assuming drive cache: write through
[ 1893.485969]  sda: sda1
[ 1893.490280] sd 1:0:0:0: [sda] Attached SCSI removable disk
[ 2190.568021] usb 3-6: reset high speed USB device using ehci_hcd and 
address 5
[ 2200.812036] usb 3-6: reset high speed USB device using ehci_hcd and 
address 5
[ 2217.056021] usb 3-6: reset high speed USB device using ehci_hcd and 
address 5
[ 2217.304027] usb 3-6: reset high speed USB device using ehci_hcd and 
address 5
[ 2227.548081] usb 3-6: reset high speed USB device using ehci_hcd and 
address 5 

But the story gets worse by the minute!

When attempting to repeat the achievement (after I had [successfully]
copied files from the computer to the SD Card) the mount again failed.

| [felixk@ ~]$ mount /mnt/memstick
| mount: I could not determine the filesystem type, and none was specified

Are you telling me that it is time that I bought a new computer (with a 
more powerful usb port)?

Or does the dmesg message:

[ 1893.478427] ***Driver 'sd' needs updating - please use bus_type 
methods***

contain the pointer that I need to implement (once I have understood what 
it says)? 

I know that - during the successful mount - my "copy routine" worked, 
because the Tablet's FBReader found the copied text on the SD Card and 
could load it.

If there is any documentation that I need to read, please point me to it.

Felix

-- 
Felix Karpfen
Public Key 72FDF9DF (DH/DSA)