Hi Peter,


From: Peter Ruskin <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: [gentoo-user] Missing /dev/sda* entries ???
Date: Mon, 20 Oct 2003 06:13:34 +0100

On Monday 20 Oct 2003 02:28, Stephane Brossier wrote:
> With 'uhci" module I got the following:
> bash-2.05b# lsmod
> Module                  Size  Used by    Tainted: P
> ide-scsi                7568   0
> sr_mod                 14648   0  (unused)
> sg                     29900   0
> sd_mod                 11020   0  (unused)
> vpnmod                187808  -1  (unused)
> prism2_pci             57008   1  (autoclean)
> p80211                 17036   1  [prism2_pci]
> usb-storage            22264   0  (unused)
> scsi_mod               89268   4  [ide-scsi sr_mod sg sd_mod
> usb-storage] uhci                   23536   0  (unused)
> usbcore                56000   1  [usb-storage uhci]
>
> And it results in the following outputs:
> usb.c: registered new driver usbdevfs
> usb.c: registered new driver hub
> uhci.c: USB Universal Host Controller Interface driver v1.1
> PCI: Found IRQ 10 for device 00:07.2
> PCI: Sharing IRQ 10 with 00:07.3
> PCI: Sharing IRQ 10 with 00:0b.0
> uhci.c: USB UHCI at I/O 0xd800, IRQ 10
> usb.c: new USB bus registered, assigned bus number 1
> hub.c: USB hub found
> hub.c: 2 ports detected
> PCI: Found IRQ 10 for device 00:07.3
> PCI: Sharing IRQ 10 with 00:07.2
> PCI: Sharing IRQ 10 with 00:0b.0
> uhci.c: USB UHCI at I/O 0xdc00, IRQ 10
> usb.c: new USB bus registered, assigned bus number 2
> hub.c: USB hub found
> hub.c: 2 ports detected
> SCSI subsystem driver Revision: 1.00
> Initializing USB Mass Storage driver...
> usb.c: registered new driver usb-storage
> USB Mass Storage support registered.
>
> -> It seems that up to this point everything works fine,
> the modules are loaded correctly by the kernel. I still don't
> have any entries in /dev/sd* though.
>
> The problem seems to be that when I plug the camera in  the USB
> port, nothing happens. I still don't have any entries under /dev/sd*,
> and if I grep syslog i have no traces. Could it be that my USB port
> don't work? I never used USB on linux.

I'm no expert but it looks to me like USB is working.  Perhaps you need
to make the device nodes for /dev/sd*?  You can find out the details
in /usr/src/linux/Documentation/devices.txt, for example:
# mknod /dev/sda1 b 8 1


I tried to create the device but then when i try to mount the filesystem
i get the following error:
bash-2.05b# mount -t vfat /dev/sda1 /mnt/camera;
mount: /dev/sda1 is not a valid block device


Also, I noticed something new.
I don't get the entry /dev/sda* created when i plug the camera but
i get the following trace in syslog:
usb.c: USB disconnect on device 00:07.2-1 address 3
usb.c: USB device 4 (vend/prod 0x4a9/0x3075) is not claimed by any active driver


The number '4' increases everytime i plug my camera.
So it seems that something happens but this is not enough
for me to be able to create this entry /dev/sda...

I have ben looking on the gentoo forum. I found a lot of similar
threads. I found
- one which said there was a bug in the scsi driver
- one which said we need a module 'hotplug'
- one which says 'usb-uhci' instaed of 'uhci'
(How can i know which one is good for me? uhci or usb-uhci?)

It seems to be a common problem with no generic solution :-(

S.

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