On Thursday 19 August 2010 06:14:08 Peter Hutterer wrote: > With 4e0e53fcba6fd99d458df1905d055d63360155c0 the driver got it's own > acceleration mechanism. This slowed down the pointer movement a lot, > especially on ALPS touchpads. Increase the default acceleration factor to > accommodate for this. > > The number itself is chosen through guesswork and informal tests on one > Synaptics and one ALPS pad. > > Signed-off-by: Peter Hutterer <[email protected]> > --- > src/synaptics.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/src/synaptics.c b/src/synaptics.c > index 3344d75..9d0bf14 100644 > --- a/src/synaptics.c > +++ b/src/synaptics.c > @@ -455,7 +455,7 @@ static void set_default_parameters(LocalDevicePtr > local) tapMove = diag * .044; > edgeMotionMinSpeed = 1; > edgeMotionMaxSpeed = diag * .080; > - accelFactor = 50.0 / diag; > + accelFactor = 200.0 / diag; /* trial-and-error */ > > range = priv->maxp - priv->minp;
Tested on a Lenovo T500 (Synaptics Touchpad, model: 1, fw: 7.0, id: 0x1c0b1, caps: 0xd04791/0xb00000/0x20000). Works well for me. There seems to be an awful amount of ad-hoc magic factors in that part of the code though. And comments like "Again, based on typical x/y range and defaults". Does anyone know of a way to express the factors in a more rational way? For this patch, though: Tested-by: Magnus Kessler <[email protected]> Reviewed-by: Magnus Kessler <[email protected]> _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
