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Bug 702952 - Aspect ratio corrected speed in the two axes
Aspect ratio corrected speed in the two axes
Status: RESOLVED DUPLICATE of bug 709600
Product: gnome-settings-daemon
Classification: Core
Component: wacom
3.8.x
Other Linux
: Normal normal
: ---
Assigned To: Joaquim Rocha
gnome-settings-daemon-maint
3.10.1
Depends on:
Blocks:
 
 
Reported: 2013-06-24 09:25 UTC by Jakub Steiner
Modified: 2014-02-14 01:29 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Jakub Steiner 2013-06-24 09:25:51 UTC 
I now have two touchpads, the Apple Magic Trackpad and now the Wacom Intuos 5 Touch L on an extremely wide display setup (2x 2560x1440). Both input devices work correctly, but the movement in Y direction is way more sensitive than horizontally (roughly 3 times) making it extremely clumsy to use. 

It would be nice to correct the pixel distance in each axis, so that the same physical distance traveled on the device moves the mouse cursor the same way in each axis.
Comment 1 Bastien Nocera 2013-06-24 10:05:47 UTC 
I don't know why the magic trackpad would behave that way, but the intuos touch behaves like this because the wacom plugin sets it to behave like a stylus (absolute, not relative).

The wacom plugin needs to ignore the "touch" part of wacom and not change its coordinate matrix, and the mouse plugin should handle it as a touchpad. Ditto the gnome-control-center panels.
Comment 2 Jakub Steiner 2013-06-24 10:11:17 UTC 
I am unable to pair the Apple device now. Will try to get this working again.

This seems to be related to wacom tablet screen mapping indeed. Only when the tablet is mapped to both screens, the aspect ratio of the touch device seems correct. When either left or right display is mapped to tablet, the touch device is half sensitive in X. The tablet is in absolute mode but the touch device remains relative though (as it should).
Comment 3 Bastien Nocera 2013-10-04 07:57:05 UTC 
Fairly certain this is a dual-head problem, with any mouse or touchpad.
Comment 4 Bastien Nocera 2013-10-04 09:19:56 UTC 
Any chance you can test again without using a wacom tablet? I'm pretty certain I've seen this when using a touchpad on a laptop plugged into a TV.
Comment 5 Jakub Steiner 2013-10-04 10:38:15 UTC 
(In reply to comment #4)
> Any chance you can test again without using a wacom tablet? I'm pretty certain
> I've seen this when using a touchpad on a laptop plugged into a TV.

The way I trigger it is with the 'map to display' button. It goes from one display to the other and then the aggregate area. Once I turn off 'keep aspect' in the settings off and on again, things work again with the correct aspect. To keep things even more odd, it seems to stop breaking the aspect from then on. I can use the button to switch displays and the aspect remains correct. 

My mouse pointer never seems to be affected by the aspect breakage though. I will try testing on a touchpad.
Comment 6 Carlos Garnacho 2014-02-14 01:29:02 UTC 
From my testing this seems gone with the patches in bug #709600, now that the patches there are pushed to master I'm closing this as a dup. testing is appreciated though :)

*** This bug has been marked as a duplicate of bug 709600 ***