[Wlug] Missing /dev files

[Tim Keller]

Is this device at the end of a USB hub???

I ask because I run into this issue when I plug my PSP into a usb hub
connexted to my FC8 box.  If I plug directly in I don't see this
issue...

Just an idea...

Thanks,
Tim.


On 3/30/08, Chuck Noyes <vze284qe at verizon.net> wrote:
> On Sun, 30 Mar 2008 21:25:28 -0400
> Mike Frysinger <vapier at gentoo.org> wrote:
>
> > On Sunday 30 March 2008, Chuck Noyes wrote:
> > > I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and
> > > was coping several mega-bytes of files to it when I got some I/O
> > > errors. Then I noticed that all of my /dev/sdb* files were missing
> > > from /dev.
> > >
> > > When I do an ls -al /dev, all the files are there except the sdb
> > > files.
> > >
> > > How can I get these back? I'm running Ubuntu 'gutsy'
> > > 2.6.20-16-generic.
> >
> > the device nodes only exist as the kernel thinks the device exists.
> > if you got I/O errors and then the device nodes disappeared, the
> > kernel probably detached the device.  so even if you made the device
> > nodes by hand, it wouldnt matter as the kernel still wouldnt think
> > the device was attached. review your `dmesg` and if need be,
> > unplug/plug in the USB device. -mike
>
> dmesg shows many entries like this:
>
> new high speed USB device using ehci_hcd and address 10
> usb 5-3: device descriptor read/8, error -110
> usb 5-3: device descriptor read/8, error -110
>
> Googling this message doesn't seem to provide much help.
>
> I have unpluged the device and even rebooted the computer. However,
> after a reboot, the /dev/sdb* files are still missing.
>
> --
> -Chuck
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