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

Jan Gutter linux-thinkpad@linux-thinkpad.org
Mon, 06 Aug 2007 20:56:29 +0200


On Mon, 2007-08-06 at 19:40 +0100, Rob Kendrick wrote:
> Jan Gutter wrote:
> I'd rather it just worked, tbh :)

Yah, but you know the drill by now: Linux devs mostly only get their
hands on hardware after release, while hardware vendors think there's no
bugs in the system if Windows boots ;-)

> 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've got the multitouch (bit of a misnomer, though ;-) working, but the
input is very noisy: i.e. lots of false repeat button-presses, etc. It
seems linuxwacom-0.7.8_p2 can interpret the finger-press events. The
whole X input section is in for a big overhaul, though, so I think the
input methods are going to change soon.

> 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.

Unfortunately it seems to hang my laptop when I try that. I wonder if it
might be different BIOS settings?

-- Jan