06-24-2011 10:45 PM
06-25-2011 02:16 AM - edited 06-25-2011 02:17 AM
Firstly, I have an X201T, but I just wanted to chime in to add that it's in fact sometimes the drivers that mess the accuracy on some random corners and cause very strange behavior. It might even seem like a hardware fault.
In my case, when approacing the lower left hand corner with the stylus the cursor started to drag, moved slower and slower, as if the corner was repelling it... until I reached the corner with the pen, and that's when the cursor did a sharp parabolic turn and almost snapped to the bottom right corner. Pretty unacceptable behavior.
My thoughs? The digitizer must be aligned wrong, maybe detached a little bit on that corner or something. I tried calibrating it many times but it didn't help. But that's when I decided to boot to my Arch Linux setup and try the same there. That way I could isolate the problem.
In Linux the pen goes all the way to all four corners and is perfectly aligned in relation to the pen. So it has to be the driver in Windows.
Long story short: with all the pressure sensitivity problems I had had plus the calibration being so off I tried the Fujitsu driver and now everything works like a charm. I don't know if you should try the Fujitsu driver because you have the X220T (could momentarily screw up the 3-5-finger gestures), but in case you want to try it: http://forums.lenovo.com/t5/X-Series-Tablet-ThinkPad-Laptops/X201t-FINALLY-GOT-MT-AND-PRESSURE-SENS-...
06-25-2011 08:03 AM
In desperation, I went into the calibration settings and disabled the "eraser" function of the digitizer.
This seems to have fixed the problem. Perhaps the problem has been caused by the tablet not understanding how to interpret the signals from a pen emitting from both the tip and the "eraser."
Does this help with anyone else?
06-25-2011 01:14 PM - last edited on 06-26-2011 03:40 AM by Maliha
No it did not help. Here is a picture of the distortion I am having. I'm probably getting rid of this. I drew these lines using a piece of stiff folded paper as a ruler. You can see the lines in the middle are straight. The corners and edges of the screen are an entirely different story. The bottom of the picture is the top when in laptop mode and the left side of the screen is the right side of the screen when in laptop mode.
Moderator Note: Image size > 50k, converted to link.
06-25-2011 08:33 PM
I'm having the same issues with my x220i laptop, and it's brand new! This is really disappointing for me as I sold my HP TM2 and got this tablet as an 'upgrade', hoping that I would not have any problems anymore (I had a lot of problems with my TM2). My laptop is otherwise in perfect condition - as far as I can tell, I've only had it two days - it's just the pen that does not work right.
In my opinion, a fix for this should be a top priority for lenovo. Why? Well, what is the point of buying a tablet? To use the digitizer. And if your digitizer does not work right, then what is the point of buying the tablet in the first place!?
This has soured my opinion of Lenovo slightly, as I expected high quality for such a high price, and yet right out of the box I am getting issues.Hopefully there's somone on this forum that works at Lenovo or knows people who do and can get Lenovo working on this issue.
My theory for why this issue is occuring is that either the digitizer panel is simply not big enough for the screen, or its just a bad driver. Either way we need a driver update. In the mean time, that Fujitsu driver might work but I'm hesitant to try it on my laptop considering I have not had time to make backups for it.
06-25-2011 09:24 PM - edited 06-25-2011 09:24 PM
Anyone tried kvirtanen's trick with the Fujitsu driver on the X220t? I haven't received my tablet yet but I'd be interested to know if I can count on that for a short term fix...
No luck here. Start -> All Programs -> Pen Tablet -> Pen Tablet Properties reports "A supported tablet was not found on the system". Also, Device Manager -> Human Interface Devices -> Wacom Pen -> Properties reports the driver is version 18.104.22.168, which is identical to the basic WIndows 7 version (what you get if you uninstall the ThinkPad MultiTouch Driver / ISD and reboot).
06-25-2011 09:52 PM - edited 06-25-2011 10:19 PM
Good of you to give it a try wjyoung, too bad it didn't result in a quick fix.
HP79 thanks for the video. I watched it and it looks like the angle you employ on the stylus is different at each edge of the screen. This is highlighted particularly well at the 41s mark where it looks like you have your hand completely twisted around. I'm assuming that's not your natural position to write from on the right side. Anyways, is the problem not at least partially alleviated by going through a more intense calibration with the pen in your natural writing position the whole time?
Edit: Grip = angle.