hi
I am trying to use a brand new USB Iomega 100M ZIP-drive on my linux box I
succeed in mouting and reading the drive but I am getting frequent R/W errors
and software freeze which prevent me from using it realibily.
Hardare is a DFI K6BV3+/66 board with on-board usb support enabled.
I am using a 2.2.17 kernel as compiled by Mandrake Soft in its standard 7.1
distri.
Following modules are loaded successfully at startup (using depmod):
usb-storage 11568 0 (unused)
uhci 18560 0 (unused)
usbcore 43632 0 [usb-storage uhci]
../..
dmesg ouput during boot is as follows:
../..
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
uhci.c: USB UHCI at I/O 0xe400, IRQ 10
uhci.c: detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
usb.c: USB new device connect, assigned device number 1
hub.c: USB hub found
hub.c: 2 ports detected
usb.c: registered new driver usb-storage
USB Mass Storage support registered.
usb.c: USB new device connect, assigned device number 2
scsi0 : SCSI emulation for USB Mass Storage devices
scsi : 1 host.
Vendor: IOMEGA Model: ZIP 100 Rev: 90.J
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi removable disk sda at scsi0, channel 0, id 0, lun 0
sda : READ CAPACITY failed.
sda : status = 0, message = 00, host = 0, driver = 08
sda : extended sense code = 2
sda : block size assumed to be 512 bytes, disk size 1GB.
sda:scsidisk I/O error: dev 08:00, sector 0
unable to read partition table
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
hub.c: already running port 2 disabled by hub (EMI?), re-enabling...
usb.c: USB disconnect on device 2
usb.c: USB new device connect, assigned device number 2
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
../..
Humm obviously not 100% correct but these are warning only aren't they?
Also the drive produce a pleasant start-up sound obviously loading and
reading the disk.
then I mount the drive with 'mount /mnt/zip'
Note :/etc/fstab:
../..
/dev/sda4 /mnt/zip vfat nosuid,noauto,user,nodev,exec
0 0
../..
It seems to work OK with /var/log/messages saying:
../..
Feb 4 22:52:29 localhost kernel: SCSI device sda: hdwr sector= 512 bytes.
Sectors= 196608 [96 MB] [0.1 GB]
Feb 4 22:52:29 localhost kernel: sda: Write Protect is off
Feb 4 22:52:32 localhost kernel: sda: sda4
../..
Looks good it is indeed a 100MB disk i am using
But when I use the drive, i get frequent read errors and final freeze.
I can only trace that to a kernel error message:
Feb 4 23:01:08 localhost kernel: usb_control/bulk_msg: timeout
After that I cannot access anymore /dev/sda4 and need to reboot.
So far I did 3 things:
0) Connect and check the USB port using a USB webcam: Works OK
1) test the drive on a win2000 portable: works OK
2) Compile and run kernel 2.2.18 with backport of latest USB drivers as
recommended on http://linux.nf/usbzip.html: Same problems R/W errors and
hangs-up.
I am now running out of ideas on this.
Any suggestion from a helpfull reader?
Thanks
--
Paul-Henri FERME
UNIX is user friendly, it's just selective about who its friends are !
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