On 08/08/11 17:04, Alan Stern wrote:
On Mon, 8 Aug 2011, Torquil Macdonald Sørensen wrote:
On 08/08/11 16:15, Alan Stern wrote:
On Sun, 7 Aug 2011, [ISO-8859-1] Torquil Macdonald S�rensen wrote:
Hi!
My Linux 3.0.1 system seems to not automatically detect the partition table on
my Sony Ericsson T707 mobile phone USB mass storage devices. After connecting it
to the USB port on my computer, I get the following additional lines in the
kernel log:
usb 1-1: new high speed USB device number 5 using ehci_hcd
usb 1-1: New USB device found, idVendor=0fce, idProduct=e11d
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: Memory Card (MSC)
usb 1-1: Manufacturer: Sony Ericsson
usb 1-1: SerialNumber: 3545170352001900
Initializing USB Mass Storage driver...
scsi6 : usb-storage 1-1:1.0
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 6:0:0:0: Direct-Access Sony Eri Memory Card 0000 PQ: 0 ANSI: 0
scsi 6:0:0:1: Direct-Access Sony Eri Memory Card 0000 PQ: 0 ANSI: 0
sd 6:0:0:0: Attached scsi generic sg2 type 0
sd 6:0:0:1: Attached scsi generic sg3 type 0
sd 6:0:0:0: [sdb] Attached SCSI removable disk
sd 6:0:0:1: [sdc] Attached SCSI removable disk
There is /dev/sdb and /dev/sdc since the phone has two USB mass storage units.
One for the internal memory and one for the memory card.
However, only /dev/sdb and /dev/sdc are created, not /dev/sdb1 and /dev/sdc1.
...
Thanks Alan!
I performed the usbmon procedure for insertion of the Sony Ericsson mobile phone
as well as for insertion of my Sandisk USB memory stick. As mentioned above,
only in the latter case are the partitions detected. First thing I noticed is
that the usbmon log is much shorter for the Sony Ericsson phone around 260
lines, while for the USB memory stick it was around 1300 lines.
In each case, I stopped the usbmon logging before removing the usb devide, so
the log should show only events related to the insertion. I used the "all buses"
capturing, but made sure beforehand that my USB mouse and USB keyboard was
unplugged, so as not to cause unwanted noise in the logs.
Since I cannot make much sense of the log files, I'm attaching both usbmon log
files here in the hope that someone will understand the problem...
I'll be very happy to do extract more debugging info if that will help the
debugging procedure.
The usbmon trace for the Sony Ericsson phone shows the phone telling
the computer that no medium was present for either the internal memory
unit or the card. Maybe it just needs some extra "warm-up" time. You
could try increasing usb-storage's "delay_use" module parameter and see
if that makes any difference.
Well, well... Thank you Alan! Using delay_use=7 seems to have done the trick,
and it has now worked several times in a row on this setting! I'm impressed! :-)
Thanks again!
Torquil
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