Please Help me with a Linux Mystery

[dsr at tao.merseine.nu]

On Fri, Apr 14, 2006 at 08:49:38PM -0400, Kent Borg wrote:
> At work I am trying to fix an Ubuntu Breezy install running on an
> AMD64 machine.  The first problem is that I cannot access USB 2.0 hard
> disks (but can access a 1.0 thumbdrive).  On the console I get:
> 
>   usb 3-6: device descriptor read/64, error -110
>   (maybe repeated 4x times)
>   usb 3-6: device not accepting address 4, error -110
>   (repeated with incrementing addresses)
> 
> I boot a 32-bit Knoppix disk and it works.  Also, it used to work.
> Did the OS break?  Did I pickup a selective hardware problem?  That's
> mystery #1.

The second item implies that you have a USB 1.0 UHCI or OHCI driver for
the local chipset, but not a working 2.0 EHCI driver; the Knoppix disk
has that driver and is enabling 2.0 functionality. Try hand-loading that
module, and if it fails, that should give you a clue or two.

> Mystery #2: What is the list of files Samba looks at, and can I copy
> them over and expect it to work?  (Or, is it like a database where
> copying the underlying files won't work?)

Well, the list of directories that get shared is in
/etc/samba/smb.conf, looking like:

[homes]
   comment = Home Directories
   browseable = no
   read only = no
   create mode = 0750

[tmp]
   comment = Temporary file space
   path = /tmp
   read only = no
   public = yes

-dsr-