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Re: Bug#416490: acpi-support: IBM Ultrabase X4 DVD/CDOM Undetected On Dock

(Please keep the BTS in copy when replying)

On Tue, 03 Apr 2007, Sheridan Hutchinson wrote:
> Raphael Hertzog wrote:
> >I would like this too. Unfortunately, I have no clue on how to detect
> >that we're plugged into a dock. And it's not even clear that acpi-support
> >is really the package that should take care of that. After all,
> >acpi-support is only a set of hacks so that supend/resume works
> >with as many laptops as possible.
> Detection may be possible with values in:
> /proc/acpi/ibm/bay
> or maybe (could be obsolete)
> /proc/acpi/ibm/dock

Can you give sample values that those file are exporting ? (I have no IBM
laptop and don't feel like searching for documentation on this specific
aspect) Feel free to point us to any existing documentation on that topic.

> >Feel free to provide a patch. :-)
> My programming skills might not be up to these intricacies, how about a 
> donation to the Debian project instead? :P

We're lacking more man-power than money. But any way to help us is
appreciated. ;-)

> >I don't know it it's reasonable to call hotswap systematically after a
> >resume (if it's installed).
> As an acpi script it's probably not reasonable, it might be easier to 
> look to see exactly what hotswap does in this context.

The more interesting thing is to know if the kernel is aware of the fact
that something has been hot-plugged and how can it give us this

I fear that the IDE bus is not really hotplug friendly and that we
simply have no way to discover this automatically (hence the need of
a tool to ask for a rescan of the IDE bus by the kernel). But I'm
neither an hardware expert nor a kernel specialist, so I may be wrong.

I hope someone from debian-devel can enlighten us on this aspect.

Raphaël Hertzog

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