Messages in this thread | | | From | Dmitry Torokhov <> | Subject | Re: ALPS touchpad with 4 directions button doesnt work as intended | Date | Mon, 2 Nov 2009 14:25:32 -0800 |
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On Monday 02 November 2009 02:16:28 pm Maxim Levitsky wrote: > On Tue, 2009-11-03 at 00:12 +0200, Maxim Levitsky wrote: > > On Mon, 2009-11-02 at 10:00 -0800, Dmitry Torokhov wrote: > > > On Mon, Nov 02, 2009 at 07:20:26PM +0200, Maxim Levitsky wrote: > > > > On Sun, 2009-11-01 at 21:38 -0800, Dmitry Torokhov wrote: > > > > > Hi Maxim, > > > > > > > > > > On Sat, Oct 31, 2009 at 04:10:18AM +0200, Maxim Levitsky wrote: > > > > > > I have a acer 5720G laptop, and its touchpad (ALPS) has three > > > > > > buttons, usual left/right, and middle button that can be pressed > > > > > > in 4 directions. Up/down direction work fine, but left/right > > > > > > doesn't. This means that left direction produces middle button > > > > > > click, and right direction doesn't work at all. > > > > > > I took a look at source, and I see that driver doesn't even know > > > > > > about such configuration. > > > > > > > > > > > > Now I am sure its very easy to figure out what is send when no > > > > > > working button is pressed, but I am a bit confused what BTN_* > > > > > > event to assign to it, so it will work as horizontal scroll as > > > > > > intended. > > > > > > And unassign middle button from other direction.... > > > > > > > > > > Synaptics driver maps multi-button to BTN_0...BTN_8 and it looks > > > > > like synaptics X driver maps teh 4-button case by default to > > > > > up/down/left/right scroll so I'd map ALPS the same. > > > > > > > > Thanks! > > > > > > > > One question, should I expect some resistance because the button > > > > won't work as middle button by default? (I am sure that in X its easy > > > > remap it back) > > > > > > I am pretty sure these kind of buttons allow 5 distinct presses - left, > > > right, up, down and "straight" (which may be reported either with > > > distinct packet or by reporting both up/down or left/right presses) so > > > you don't have to loose the middle button. This is a speculation > > > though... > > > > Mine doesn't unfortunately, this is if I press it 'straight' I both feel > > physicaly 4 different presses and it reports currently, 'back button' > > 'forward button' and 'middle button' as I press it. > > > > It is possible to implement emulation, but I think that pressing it > > straight might also put some stress and damage it in long run. > > > > > > I think that pressing left+right buttons will be enough for the > > replacement. If not, xmodmap can be used to map each of the 4 buttons > > (or all of them to middle one) > > > > > > Best regards, > > Maxim Levitsky > > Sorry, forgot to CC lkml... >
OK, fair enough.
-- Dmitry
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