On Thu, 15 Feb 2007, Kristofer Bergstrom wrote:

>       I am trying to get a new portable audio recorder (the H4 Zoom --
> http://www.samsontech.com/products/productpage.cfm?prodID=1901) to
> connect to my Debian testing (amd64) box.  The device is compliant with
> the USB 2.0 mass storage standard and I can get it to work on another
> machine running Japanese Ubuntu (it automounts the device when I connect
> it).
> 
>       After loading the usb_storage module (modprobe usb_storage) I
> connect the device and tell it to connect to the computer.  Watching my
> syslog (tail -f /var/log/syslog), the connect sequence seems to be going
> very well until the end, when it terminates in the following error:
> 
> scsi.agent[15554]:      sd_mod: can't be loaded (for disk)
> 
>       lsmod shows that I do not have the sd_mod module loaded, and I'm
> unable to load it with "modprobe sd_mod" -- FATAL: Module sd_mod not
> found.
> 
>       Checking my kernel configs (according to information I read here:
> http://linuxgazette.net/133/tag.html) it turns out that I have the
> CONFIG_SCSI and CONFIG_BLK_DEV_SD modules compiled into the kernel.  
> For what it's worth, I'm using a kernel that a friend helped me compile.
> 
> chappa:/tmp# grep CONFIG_BLK_DEV_SD /boot/config-2.6.13.4.05102203 
> CONFIG_BLK_DEV_SD=y
> chappa:/tmp# grep -i sd /boot/config-2.6.13.4.05102203 
> CONFIG_BLK_DEV_SD=y
> 
>       Any ideas why the sd_mod module can't be found during the USB
> connect sequence?  The complete output of syslog during a connect
> attempt is below.  Thank you in advance for any help you're able to
> provide.

The sd module can't be found because it doesn't exist!  As you said, sd is 
compiled into the kernel, so it isn't a module.

Don't ask me why the scsi.agent program thinks it needs to modprobe sd_mod
-- it doesn't.  Maybe you just have old versions of the hotplug packages.

Alan Stern


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