Public bug reported:
Unable to automount or manually mount a 128mb flash disk (formatted as
FAT32)
the system detects the drive:
Dec 20 00:41:54 shiva kernel: [11540.376175] usb 5-3: new high speed USB device
using ehci_hcd and address 5
Dec 20 00:41:54 shiva kernel: [11540.523167] usb 5-3: configuration #1 chosen
from 1 choice
Dec 20 00:41:54 shiva kernel: [11540.524434] hub 5-3:1.0: USB hub found
Dec 20 00:41:54 shiva kernel: [11540.524614] hub 5-3:1.0: 1 port detected
Dec 20 00:41:54 shiva kernel: [11540.816415] usb 5-3.1: new high speed USB
device using ehci_hcd and address 6
Dec 20 00:41:54 shiva kernel: [11540.922010] usb 5-3.1: configuration #1 chosen
from 1 choice
Dec 20 00:41:54 shiva kernel: [11540.923168] scsi17 : SCSI emulation for USB
Mass Storage devices
Dec 20 00:41:59 shiva kernel: [11545.922808] scsi scan: INQUIRY result too
short (5), using 36
Dec 20 00:41:59 shiva kernel: [11545.922822] scsi 17:0:0:0: Direct-Access
USB 2.0 Flash Drive 1.00 PQ: 0 ANSI: 0
Dec 20 00:41:59 shiva kernel: [11545.929347] sd 17:0:0:0: [sdb] Attached SCSI
disk
Dec 20 00:41:59 shiva kernel: [11545.931278] sd 17:0:0:0: Attached scsi generic
sg2 type 0
but fails to mount unless I run
sudo rmmod ehci_hcd
sudo modprobe ehci_hcd
after doing this and waiting a few seconds the disk is mounted but with
a lot of i/o errors:
Dec 20 00:43:01 shiva kernel: [11608.056072] usb 5-3: new high speed USB device
using ehci_hcd and address 2
Dec 20 00:43:01 shiva kernel: [11608.202505] usb 5-3: configuration #1 chosen
from 1 choice
Dec 20 00:43:01 shiva kernel: [11608.204133] hub 5-3:1.0: USB hub found
Dec 20 00:43:01 shiva kernel: [11608.205090] hub 5-3:1.0: 1 port detected
Dec 20 00:43:02 shiva kernel: [11608.544328] usb 5-3.1: new high speed USB
device using ehci_hcd and address 4
Dec 20 00:43:02 shiva kernel: [11608.649893] usb 5-3.1: configuration #1 chosen
from 1 choice
Dec 20 00:43:02 shiva kernel: [11608.682455] scsi18 : SCSI emulation for USB
Mass Storage devices
Dec 20 00:43:02 shiva kernel: [11608.924066] usb 4-1: new low speed USB device
using uhci_hcd and address 7
Dec 20 00:43:02 shiva kernel: [11609.092043] usb 4-1: configuration #1 chosen
from 1 choice
Dec 20 00:43:02 shiva kernel: [11609.112637] input: PS/2+USB Mouse as
/devices/pci0000:00/0000:00:1d.3/usb4/4-1/4-1:1.0/input/input17
Dec 20 00:43:02 shiva kernel: [11609.140259] input,hidraw0: USB HID v1.00 Mouse
[PS/2+USB Mouse] on usb-0000:00:1d.3-1
Dec 20 00:43:07 shiva kernel: [11613.689359] scsi scan: INQUIRY result too
short (5), using 36
Dec 20 00:43:07 shiva kernel: [11613.689369] scsi 18:0:0:0: Direct-Access
USB 2.0 Flash Drive 1.00 PQ: 0 ANSI: 0
Dec 20 00:43:07 shiva kernel: [11613.709075] sd 18:0:0:0: [sdb] 256000 512-byte
hardware sectors (131 MB)
Dec 20 00:43:07 shiva kernel: [11613.709707] sd 18:0:0:0: [sdb] Write Protect
is off
Dec 20 00:43:07 shiva kernel: [11613.711457] sd 18:0:0:0: [sdb] 256000 512-byte
hardware sectors (131 MB)
Dec 20 00:43:07 shiva kernel: [11613.712080] sd 18:0:0:0: [sdb] Write Protect
is off
Dec 20 00:43:07 shiva kernel: [11613.712103] sdb: sdb1
Dec 20 00:43:07 shiva kernel: [11613.713472] sdb: p1 exceeds device capacity
Dec 20 00:43:07 shiva kernel: [11613.718043] sd 18:0:0:0: [sdb] Attached SCSI
disk
Dec 20 00:43:07 shiva kernel: [11613.718241] sd 18:0:0:0: Attached scsi generic
sg2 type 0
Dec 20 00:43:08 shiva kernel: [11614.252202] attempt to access beyond end of
device
Dec 20 00:43:08 shiva kernel: [11614.252218] sdb: rw=0, want=256816,
limit=256000
Dec 20 00:43:08 shiva kernel: [11614.252223] __ratelimit: 132 callbacks
suppressed
Dec 20 00:43:08 shiva kernel: [11614.258252] attempt to access beyond end of
device
Dec 20 00:43:08 shiva kernel: [11614.258266] sdb: rw=0, want=256817,
limit=256000
Dec 20 00:43:08 shiva kernel: [11614.259215] attempt to access beyond end of
device
Dec 20 00:43:08 shiva kernel: [11614.259223] sdb: rw=0, want=256818,
limit=256000
.......
.......
Dec 20 00:43:08 shiva kernel: [11614.345585] attempt to access beyond end of
device
Dec 20 00:43:08 shiva kernel: [11614.345589] sdb: rw=0, want=257040,
limit=256000
Dec 20 00:43:08 shiva kernel: [11614.345599] attempt to access beyond end of
device
Dec 20 00:43:08 shiva kernel: [11614.345603] sdb: rw=0, want=257040,
limit=256000
reading and writing the disk appears to be fine though and ejecting the
disk or simply removing results in an unmount.
** Affects: ubuntu
Importance: Undecided
Status: New
--
Problem mounting a small (128mb) usb flash disk
https://bugs.launchpad.net/bugs/309852
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