[pvrusb2] 29xxx pvrusb2 device initialization problems
isely at isely.net
Sun Feb 7 14:35:00 CST 2010
On Sun, 7 Feb 2010, vdb128 at picaros.org wrote:
> > But remember that I'm also running that same 188.8.131.52 kernel on my
> > desktop system and THERE the 29032 device initializes perfectly.
> > Perhaps the USB hardware is different on the two? Well, apparently not,
> > according to lspci. One both machines this is what lspci says about the
> > USB host controllers. It's identical in both places:
> It might be a compiler peculiarity. If feasible, copy the 184.108.40.206
> kernel image from the desktop to the laptop and install it as an
> alternative boot image.
Another good guess. But...
When I say I'm running the same image on both it actually is the
bit-for-bit same image. When I build kernels here, I build them into
Debian packages. Then I can install the package wherever needed. So in
this case it really *is* the same build running on both machines -
installed using the Debian package installer.
I'm starting to think more and more that this is some sort of race
condition happening at a very low level involving the USB host
controller. The relative timing of the two machines will definitely be
different: The laptop where it doesn't work with certain kernels is a
Core2 Duo running at 1.7 GHz. But the desktop where it always works
with all kernels is a Core2 Quad running at 2.66GHz. Unfortunately that
guess doesn't help in leading to a root cause.
isely @ isely (dot) net
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