linux-kernel - Re: 2.6.24: false double-clicks from USB mouse

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Date:	Fri, 7 Dec 2007 16:43:17 -0500
From:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>
To:	"Ray Lee" <ray-lk@...rabbit.org>
Cc:	"Jiri Kosina" <jkosina@...e.cz>, "Mark Lord" <lkml@....ca>,
	rubini@...ion.unipv.it, linux-input@...r.kernel.org,
	"Linux Kernel" <linux-kernel@...r.kernel.org>,
	"Jeff Garzik" <jeff@...zik.org>,
	linux-usb-devel@...ts.sourceforge.net
Subject: Re: 2.6.24: false double-clicks from USB mouse

On Dec 7, 2007 4:23 PM, Ray Lee <ray-lk@...rabbit.org> wrote:
>
> On Dec 7, 2007 10:32 AM, Dmitry Torokhov <dmitry.torokhov@...il.com> wrote:
> > On Dec 7, 2007 12:59 PM, Ray Lee <ray-lk@...rabbit.org> wrote:
> > > On Dec 2, 2007 2:07 PM, Jiri Kosina <jkosina@...e.cz> wrote:
> > > > Thanks. To sum up this longish thread:
> > > >
> > > > - Mark seems to be able to reproduce the problem quite easily; I was not
> > > >   successful reproducing this no matter how hard I tried, and I also
> > > >   didn't receive any similar bugreports from anyone else
> > > > - we are currently waiting for Mark to provide HID_DEBUG (and preferably
> > > >   also usbmon) output from the situation where multiple clicks are
> > > >   being generated incorrectly
> > >
> > > Okay, I'm having a problem with 2.6.24-rc4 that I didn't with 2.6.23-rc6.
> > >
> > > When the problem hits, my mouse (synaptics touchpad) is randomly
> > > moving about and clicking things whenever I have my finger on the
> > > trackpad. This behavior will persists for five to ten minutes (is
> > > happening now), and seems to be triggered by load (watching online
> > > videos in flash player, for example -- this matches Mark's experience
> > > with a make -j4).
> > >
> > > I *think* the touchpad is connected via ps2, which looks like it'd
> > > clear usb of any blame. It's /dev/input/event6 at any rate.
> > >
> > > This has been happening about once a day, and seems to start because
> > > of high CPU usage. ONce the CPU is idle, it still happens though, so
> > > I'm not sure why it clears up.
> > >
> > > Any clues for where I should hunt from here?
> > >
> >
> > Can you try replacing drivers/input/ and include/linux/input.h from
> > 2.6.23-rc6 and see if it works or not? That should give us idea if
> > input locking changes are to blame.
>
> I'm hitting a number of build errors, trying to compile a hybrid
> between the two.
>
> git checkout v2.6.24-rc4
> git checkout v2.6.23 include/linux/input.h drivers/input
> make
> # fails with kconfig issues
> git checkout v2.6.24-rc4 drivers/input/misc/Kconfig
> make
> # fails
> ...adding to include/linux/input.h:
> #define KEY_CNT                   (KEY_MAX+1)
>
> takes the build a little farther until it dies on more missing
> definitions. Doing a checkout of 2.6.24-rc4's include/linux/input.h
> leads to different build errors.
>
> Looking at git log for drivers/input, it appears the patches you're
> talking about are the ones starting with 8006479c9b? If so, perhaps I
> should just build the revision right before that commit and test that?
>

Yes doing this and then buildig
b9d2d110b10f7b4788d0fdd328cf57e34b767817s shoulds isolate msot input
core changes.

-- 
Dmitry
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