Re: Touchpad (mouse) driver with adjustable pointer speed (not acceleration)???
- From: mike <spamme0@xxxxxxxxxxxx>
- Date: Sun, 18 Jun 2006 04:04:53 GMT
Ray Trent wrote:
mike wrote:
What I want is a touchpad driver that has adjustable pointer speed
and ZERO aceleration.
Windows itself is the entity doing the acceleration. It's extremely unlikely that your Alps touchpads had no acceleration. I've played with doing that and the device is completely unusable. What you really want is *different* acceleration.
I concede. My Cirque pad is set so that a slow swipe of my finger moves the mouse 1280 pixels...one screen width. If I swipe my finger as fast as I can, I can traverse the 1280 pixels in about 80% of a touchpad width.
Technically it only FEELS like zero acceleration.
So, I modify my request to a driver that has ALMOST zero acceleration.
The Synaptics drivers that I've been able to find have a LOT of acceleration if I expect to get across the screen in one swipe.
We've written it to be best we've been able to find by doing large(ish) usability studies, but the sad fact is that different people are different, and there's a limit to how many axes of flexibility you can reasonably provide.
Synaptics drivers have no pointer speed adjustment. The label says
pointer speed, but they only adjust the acceleration. All my other
We've thought about doing this, but the problem is that you'd then have *2* pointer speed controls, because the one that's currently there is actually the OS's standard mouse speed control. Yes, we've tried removing the OS control but then people complain about not being able to adjust their USB mice.
Two speed controls is FINE with me as long as it gets me where I want to go.
For Win9x, you can find the registry values that change when you slide the Pointer Speed slider (HKCU\Control Panel\Mouse\MouseSpeed, MouseThreshold1, and MouseThreshold2) and just set MouseSpeed to 0. This effectively turns off Win9x's built-in ballistics (but for all devices, not just TouchPads).
That's perfectly fine cause I only have one pointing device per machine.
Thanks for the pointer, I'll experiment with the values. Is there a written tutorial on what the threshold values do? I'm writing this on a system with a Cirque touchpad and MouseSpeed, MouseThreshold1 and MouseThreshold2 are all zero. There are registry entries under Cirque for Acceleration = 1 and Pointer Sensitivity = 350.
I must admit that I have almost zero understanding of the Windows Registry. I've seen many "fixes" for various issues reported in newsgroups where the expert
says, "add this magic undocumented registry key and you'll be fixed up."
I can experiment changing values. But I have no way to add a key that I
know nothing about.
Not at all clear how you find out about these things without stumbling across someone who happens to know...
I think you'll find that this isn't actually what you want. It will take you forever to get across the screen.
If we provided a speed slider of our own, you could then speed this up, but what you would find is that you wouldn't be able to hit single pixels, not because the cursor jumps over pixels, but because you couldn't control your finger that accurately.
I don't have any problem navigating my system with the Cirque touchpad
set to give me 1280 pixels in one swipe. It sure feels like I can get at every pixel.
I have noticed what you describe with ALL the LINUX touchpad drivers I've encounterd.
touchpads have zero acceleration and I just can't get used to that
This is demonstrably not true. But I respect your opinion that it seems that way and that you prefer it.
Ok I conceeded above. Just want it to FEEL like zero acceleration.
Is there a secret mouse registry key that I can add to change the pointer speed on the synaptics drivers?
Sadly or not, there isn't a simple registry key to change pointer speed for TouchPads in the Synaptics driver. You can do it by writing an application that uses our COM API... If you want to go this route, take a look at our API (http://www.synaptics.com/decaf/utilities/SynCOMAPIv1_0.zip) and I'll tell you what codes you have to send down to do this.
Thanks, but that is WAY over my head.
In the mean time, you can also turn on the "Slow motion cursor" feature if you need more help with fine positioning when you have the speed cranked up. This is in the control panel (cursor moves more slowly when a modifier key is held down).
Thanks, I don't want ways to work around the fact that the driver gives me insufficient flexibility. I've got ALPS and Cirque touchpads that give me the motion that I want. Would be nice if the Synaptics drivers could do that, cause I REALLY LIKE the Synaptics scrolling and gesture capabilities.
But this is starting to get non-device-driver-development-related.
I went to a swapmeet today and sold off my problem laptop. I'll have to start over with the experiments on another one.
Thanks for your help.
mike
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