Re: HP5300C - USB-problems?

From: Douglas Gilbert (dgilbert@interlog.com)
Date: Fri Feb 16 2001 - 19:24:08 PST

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    j.steindlberger@gmx.de wrote:
    >
    > >
    > > > I'd be interested for anyone who actually has got it working to post
    > the
    > > > details of their system to see if there's anything obviously different
    > > > to mine:
    > > >
    > > > Pentium III 733Mhz
    > > > Via Apollo Pro 133 motherboard with uchi USB ports
    > > > Kernel 2.4.1
    > > > Sane 1.04
    > >
    > > Which UHCI-driver ?
    > >
    > > What does scanimage -T give you ?
    > >
    >
    > Hi Oliver, hi all others!
    >
    > "scanimage -T" gave me an error, because the buffersize was too small. I
    > took 8k - as it's written in the MiniHowto. But I should have been
    > starting with the 32768 (=32k).
    >
    > With the 8k I got a memory-failure
    >
    > ...# scanimage
    > [sanei_debug] Setting debug level of avision to 10.
    > [avision] sane_init: parsing config line "scsi HP"
    > [avision] sane_init: config file line 1: trying to attach `scsi HP'
    > [avision] attach
    > [avision] attach: opening /dev/sg0
    > [avision] attach: open failed (Out of memory)
    > [avision] sane_get_devices
    > scanimage: no SANE devices found
    > [avision] sane_exit

    An out of memory failure during a sg device open
    means the kernel couldn't find 4 KB . [Sg reduces
    the requested reserved size buffer until the kernel
    gets some memory or the size is <= 4KB.] This is
    horrible. Sounds as if that usb-scsi patch has
    'unchecked_isa_dma' set to 1 thus restricting sg to
    getting memory below the 16 MB level.

    Just checked the usb-scsi code and that is not the case.
    Have you any idea why there would be such a shortage
    of memory on your machine? If you have CONFIG_MAGIC_SYSRQ
    selected in your kernel, what does Alt+SysRq+M output?

    Doug Gilbert

    Doug Gilbert

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