Re: firewire ExpressCard recommendation

On Wednesday 21 January 2009 16:34:24 Carl Karsten wrote:
> Jarod Wilson wrote:
> > On Sunday 11 January 2009 15:14:47 Stefan Richter wrote:
> >> Carl Karsten wrote:
> >>> I want to run 2 DV cams into my laptop.  laptop has one fw port.
> >>>
> >>> There was only one at my local store, and linux doesn't see it at all
> >>> (nothing in lspci, dmesg, syslog)  The only way I know it works is
> >>> because it worked in a mac, which gave me this PCI ID:
> >>> [197b:2380] FireWire (IEEE 1394) [0c00]: JMicron Technologies, Inc.
> >>> Device
> >>>
> >>> So, anyone have one they like?
> >>
> >> I have no idea what I'm talking about, but this sounds more like a
> >> problem with the kernel's PCIe hotplug support rather than a problem
> >> with the particular card.
> >
> > Yep, that's what it sounds like to me too. I know my own laptop w/an
> > expresscard slot requires having the pciehp driver loaded (which doesn't
> > happen automatically in many kernels) before cards properly hotplug. The
> > card itself should be no different than the pcie jmicron cards I've got,
> > which work fine (at least w/the newer stack, not sure I've tried them
> > w/the old one).
>
> https://help.ubuntu.com/community/ExpressCard says  "sudo modprobe pciehp"
> but of course I am making life hard for myself and running jaunty, so I get
> FATAL: Module pciehp not found.
> Because: [not amd64].

pciehp isn't amd64-specific. It might be that jaunty's kernel changed it to
be a built-in driver instead of modular (Fedora's kernel has gone that route,
as it makes pcie hotplug Just Work instead of having to know to load an
additional module). But I suppose its possible pciehp is disabled on 32-bit
jaunty kernels too.

> jmicron - got a URL of one for sale?  (google kept telling me how to use
> it.)

For an expresscard, not offhand no. I know I saw jmicron pcie cards on
newegg.com a while back though. Can probably find one there if you dig
around through the myraid of offerings. The cards I have came straight
from jmicron (engineering samples) and I've got a built-in one in a Dell
Studio Hybrid.

-- 
Jarod Wilson
[email protected]


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