[ltp] Thinkpad x61 Tablet (irq 20: nobody cared)

[Hendrik-Jan Heins]

Please DON't do irqpoll!!!!
It'll driver your wired connection crazy.
Basically your e1000 port will continuously loose it's irq address and
consequently it won't work anymore.

As for suspend and hibernate: both seem to work on the X61s. See:
http://hjh.passys.nl/Debian/lenovo-ibm-x61s.html

In the same web folder (actually in the Sid/i386 subfolder), you can
also find alsa packages I build. I currently have sound.

Ah yes, mine is running Debian sid.

Hendrik-Jan


2007/8/6, Rob Kendrick <rjek@rjek.com>:
> Jan Gutter wrote:
> > Hi all,
> >
> > I've recently acquired a Thinkpad x61 Tablet (model 7767-B8G)
>
> Snap.  I have the identical model, bought last month.
>
> > and I'm trying to get Gentoo Stable running on it with varying degrees of
> > success.
>
> Snap.  Although Debian and Ubuntu in my case.
>
> > I'm medium-to-advanced in getting kernels to work on weird
> > hardware, plus I'm not afraid to patch the heck out of stuff!
>
> I'd rather it just worked, tbh :)
>
> > Since this hardware is brand new, I'll try to keep bashing at it till
> > everything works. I'll split out the different problems in different
> > mail threads to keep everything sane.
>
> I've managed to get everything working, excluding suspend/resume and the
> multitouch panel (the tablet/stylus functionality works a treat.  The
> multitouch stuff does appear to generate data on the port, so I imagine
> this is just the C driver not knowing what to do with it.)
>
> > I'll try to get my experiences up at thinkwiki sometime this week
> > (there's a few patches with ALSA and the wacom tablet that's required,
> > some hints on how to shrink the EVIL VISTA partition, etc...)
>
> I did the ALSA patches, yes.  I found all that was required to get the
> wacom working was the relevant setserial.  I discovered the ports and
> IRQs by booting Vista and looking in the device manager - thankfully,
> they're identical to the X41t's (0x200 IRQ 5).
>
> > Now to the problem:
> >
> > I'm running kernel 2.6.22-gentoo-r2 #1 SMP PREEMPT (no acpi or pci
> > options on cmdline). After a minute or so of uptime I get the following
> > (and then, predictably, the USB ports on the right side go dead):
> >
> > irq 20: nobody cared (try booting with the "irqpoll" option)
>
> Snap.  The problem goes away by doing the suggested: adding the irqpoll
> option to the kernel's command line.  This seems like an acceptable
> workaround, but I am too happy to provide any assistance to anybody who
> wants to track down the reason.
>
> B.
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