Maybe unrelated, but I remember having some problems with some SCSI cards (a Tekram DC3x5 I think) that would really perform badly with R/W unless I was in single user mode (I never figured out why though).
On Fri, 8 Feb 2002, Larry Williams wrote: > I have a Jaz Drive on SCSI that makes similar complaints if the cartdrige > isn't mounted at boot time. May or may not have anything to do with your > problem, just thought I'd mention it. > Larry > > > On Friday 08 February 2002 00:40, you wrote: > > 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 > > -- > ==================================================== > I Work for the Department of Redundancy Department > ==================================================== > > > > _______________________________________________ > [EMAIL PROTECTED] > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users > _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
