Bug#663433: udev: does not load acpiphp on ThinkPad T520 although it is needed for ExpressCard hotplugging

[Bjørn Mork <bjorn@mork.no>]

Martin Steigerwald <Martin@lichtvoll.de> writes:

> Am Sonntag, 11. März 2012 schrieb Marco d'Itri:
>> On Mar 11, Martin Steigerwald <Martin@lichtvoll.de> wrote:
>> > So please advice. Is it sufficient for ask for module aliases being
>> > added upstream? If I know how I can provide the necessary info for
>> > my ThinkPad T520.
>> 
>> I am not familiar with ExpressCard, so I do not know exactly what is
>> needed.
>
> No problem. Maybe someone from the Debian kernel team knows. If not I can 
> also ask upstream.

The issue has already been discussed among the upstream experts. See e.g.
http://www.spinics.net/lists/linux-pci/msg11140.html
for an explanation why autoloading acpiphp on all machines historically
has been impossible.

Don't know if anything ever came out of this though:
http://www.spinics.net/lists/linux-pci/msg11148.html

If not, then I guess a distribution could add an init script which
checked DMI dates and loaded acpiphp by default on all modern machines.
It's a pity that users have to research this themselves to get
ExpressCard slots working.


Bjørn