multiple monitors - Touchscreen calibration troubles in Windows 8.1 using Eyefinity
2014-07
user333007
I'm using Radeon Eyefinity to make a single desktop display of 3 monitors side by side. Problem is, when setting up the touchscreen, windows 8.1 thinks that that's just one monitor, so when you set it up to calibrate the touch 'space', the touch on the first screen is represented by an action relative to that position wherever it sits across the space of the 3 screens. That's the best way I can put it, does it make sense?
So, basically, I want to have the display extended across three monitors, but I want the touch input to match the point of that extended display that I actually click.
Actually, I could happily not have any touch on the second two screens - indeed I've tried disabling it. All I want is for the first screen to be the desktop and for my touch input to match the space on that screen that I touch.
Currently, if I were to touch the dead centre of the first screen, my 'click' would appear at the centre of the second screen (the centre of the full display).
I try and calibrate, but when it puts the crosshairs on the screen which you have to touch, the 'canvas' is spread across the three screens - but it will only accept the input from one of the screens, and display an error if you try to touch another.
The way Eyefinity seems to work is that it essentially tricks windows into thinking it's juse one monitor, so I only have the choice of one monitor to choose from, and so its sets the calibration across the dimensions of the whole 3 screens combined (5760 x 1080).
I wouldn't bother with Eyefinity, but I need to have the desktop extended across all 3 monitors, and as standard Windows only seems to allow you to do that across 2 monitors (and duplicate the other).
Does anybody have any ideas how I can solve this?
askvictor
I have a machine (Fujitsu T5010 dual digitiser) where the touchscreen and pen calibration is out. On the top left corner it is correct; on the bottom right it's out by about 2cm in both axes. Running the calibration program from the control panel doesn't fix this; in fact touches near the right and bottom edges don't register to the calibration program - the touch 'bubbles' appear on the far right/bottom edges of the screen - i.e. the screen is registering the touch, but the calibration programs seems to think they're too far across to make sense, so it ignores them.
I've tried un-installing and re-installing the touchscreen drivers, to no avail.
Any ideas?
jcrawfordor
you might try recalibrating in smaller steps - e.g., when you get to the points in the lower right, touch between where the dot is and where the machine would think you were touching if you touched on the dot, so that you calibrate the screen to somewhere in between where it is now and where it should be. If that works, repeat until it's calibrated properly.
I had this work once on a device that was badly out of calibration, such that it would not calibrate properly because of the big difference.
LifeSizeActionFigure
Does the screen resolution on the tablet match the native resoution of the LCD panel? If not, this could be another reason why calibration is off.
William Hilsum
Was it ever working / has it only just started to show this error?
The only time I had an issue like this, it turned out that the touch screen did not support resolutions other than maximum on the screen.
All I can say based on my previous experience is to try and change the resolution.
Also, don't rule it out - you could have defective unit.
askvictor
I've managed to fix this by:
1) Uninstalling the wacom driver
2) Removing the Registry Tree HKEY_CURRENT_USER\Software\Microsoft\Wisp\Pen (I backed up the tree first. Also, I suspect the Persist subtree of this tree is all that is required to be removed, but am not certain)
3) Reinstalled the wacom driver.