Re: rawhide hotplug broken

[David Brownell <david-b@pacbell.net>]

>    In case folks here are unaware, RedHat has been hacking
> the hotplug srpm releases here for their rawhide releases
> (and I assume their upcoming RH 7.1 release) doing such things
> as removing the rc scripts from hotplug.

It'd be interesting to know why that isn't being included.

Despite what Trond said (in a separate email on this thread), it
does more than just load modules; it also mounts "usbdevfs" at
the _right_ time (before USB host controller modules load) to
deal with some boot-time hotplugging ("cold-plugging") issues
that come up in some configurations ... like the way RedHat 7.0
initialized USB, or the last 7.1 init scripts I saw did.

Also, perhaps of more relevance to USB developers, "rc.usb"
provides some simple USB diagnostics ("rc.usb status") and
makes it easy to start, stop, and restart the USB subsystem.


>     On my linuxppc (running
> Linux 2.4.4pre1, glibc 2.2.3 and the rawhide srpms), I find
> that RedHat's modified hotplug doesn't work for loading the
> usb print module when it sees my Epson 740i printer. ...

Well, I did notice RedHat wasn't using current RPMs,
but I don't think that'd be the whole problem.


>    I discovered last night that if I installed the latest 
> hotplug-2001_02_28 and usbutils-0.7-101 rpms on my machine
> that the usb print module was loaded on boot or hotplugging
> the Epson 740i printer. I also discovered that I had to have
> usbutils installed for the hotplugging to work. 

Curious.  Can you try debugging the script invocation to see
why?  I usually:  (a) modify /sbin/hotplug to "env >/tmp/debug";
(b) insert the device, (c) modify a copy of that /tmp/debug file
and turn it into a script that exports all variables (or at least the
six used by USB hotplug :) and then does something like

    cd /etc/hotplug
    sh -x usb.agent

Then there's copious debug output (save it to a log file) which
can be examined ... in this case, to see why the "printer" driver
listing in /lib/modules/.../modules.usbmap doesn't match.

- Dave




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