Erratic cursor with touchpad on Type cover

Discussion in 'Microsoft Surface Accessories' started by joudbren, Feb 22, 2013.

  1. joudbren

    joudbren Member

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    Finally have my Surface Pro 128 and love it so far. One issue though... when I have the Type keyboard attached and the Surface Pro is plugged into its charger, the cursor moves all over the place on its own as soon as you put a finger on the touchpad. You don't have to even move your finger... the cursor just shoots all over the place.

    I spent an hour and a half on the phone with Microsoft and first they heard of this. What is weird is that as soon as you unplug the charger from the tablet and its just on battery, then everything behaves as it should. Cursor stops jumping around and only moves when you move your finger on the touchpad.

    Microsoft couldn't figure it out and even had me re-load the system. No go. Exchanged the unit today at the MS Store and the new one is doing exactly the same thing even with another new Type keyboard. I'm totally baffled. The girl I dealt with at the store did mention that someone else returned their Pro last night for exchange for the exact same reason. Is this some new problem that is starting to show up?

    Thanks in advance for any suggestions and also curious to hear from any others that have seen this.
  2. bosamar

    bosamar New Member

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    Have you tried the Trackpad Settings app?
  3. ArnoldC

    ArnoldC New Member

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    I can only relate to experience with an Android device where in, if the charger is plugged and I type on the on-screen keyboard, random letters appear.

    1. No Type Cover, and Surface Pro is plugged in. Ok?
    2. With Type Cover, and Surface Pro not plugged in. Ok?
  4. joudbren

    joudbren Member

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    Yep, no difference unfortunately.
    Last edited: Feb 23, 2013
  5. joudbren

    joudbren Member

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    1. Yes, no issues. Everything works perfectly fine. The keys on the Type Cover also work fine, just a trackpad issue as far as I can tell.
    2. Yes, no issues at all when the tablet is on battery and not plugged in with the charger.

    As mentioned, this has now happened with two different units with two different Type Covers. Plugged in... cursor problem. On battery, no problem. Microsoft store also mentioned that someone else returned a unit for the exact same problem. Thanks!
  6. Mr.NK

    Mr.NK Moderator Staff Member

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    I've been experiencing the same problems on several but rare occasions. Especially while typing in Word, the cursor do sometime a weird dance, so if I'm not watching carefully while typing, my notes will end up on a complete different corner.
  7. joudbren

    joudbren Member

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    Ok, I think I "might" have found the culprit. Seems to be possibly a grounding issue. I noticed the behaviour was changing when I had the kickstand open. It's worse when open. What is weird is that when I touch my finger to the back of the casing "under" the kickstand when it's open, the cursor becomes normal.

    I saw a thread somewhere that mentioned potential grounding issues with the metal casing and charger and that if you touched your finger to the back of the casing under the kickstand that you could feel a very slight voltage. Pretty sure both of my units have this problem and it's affecting the cursor somehow.

    Back to the MS store today I'm guessing. Microsoft is exchanging units that have this "ground" issue according to the thread so we'll see what happens. Thanks!
  8. joudbren

    joudbren Member

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    Well, as a follow up to this it appears the issue has something to do with my home. I did exchange the SP and behaviour is the same with the new unit. Different keyboard didn't help either. I took everything back to the MS Store to test and it all worked perfectly. In my office, perfect. Now I have to go hunting at home to see what could possibly be causing this cursor issue. It also behaves differently in different rooms. In my computer room it doesn't have to be plugged in to AC and the cursor still acts up. Out in the dining room it works fine but only if not plugged in to AC.

    Totally strange and I can't figure out if it's an electrical issue or some sort of wireless interference. The Wedge mouse is working perfectly along with the keys on the Type cover so not a big deal but I'm still curious if anyone has seen anything similar. As previously mentioned, someone else before me had returned a unit for the same problem so the Surface Pro is definitely susceptible to some kind of interference if I can only figure out what is causing it. Cheers!
  9. J515OP

    J515OP Moderator

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    Quick get your foil hat on your head! They're listening to your thoughts. Sorry that's all I've got.

    Maybe get a electrical testing tool from the hardware store (Outlet Tester 120V Ac) or RF detector?
  10. joudbren

    joudbren Member

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    LOL! Going to power down the house this weekend and see if I can at least narrow it down to an inside or outside interference issue. Should be interesting. Cheers!
  11. JonMeza

    JonMeza New Member

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    I just received my Surface Pro a few days ago, and today was the first time I experienced the erratic mouse cursor issue when using the trackpad. The machine was plugged to the charger. My first action was to reboot the machine, but the problem persisted. After reading a suggestion here in the threads, I unplugged the charger, and the cursor worked just fine. I plugged it back in again, and all was well. I unplugged it and plugged it back in and I experienced the cursor issues once more. Unplugged, mouse pad is fine. Definitely some interference happening with the charger.
  12. natdoc

    natdoc New Member

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    Bought a Surface Pro last Sunday and am having the exact same problem. It works fine everywhere except in my home office at my desk. I can get the problem to improve by changing the tilt of the screen off the back kickstand. I can also get the problem to improve (though still a little jitter) when I grab the case of my home desktop PC that is under the desk I'm working at. When I power down the desktop and unplug it, the problem does away. Seems it is a grounding issue or RF interference of some kind. Can't repeat the problem anywhere else, even at work sitting at desk with PC nearby as well.

    Today I exchanged both the surface and the keyboard and still has same problem. Concerned if I make adjustments at home to overcome this, it will reappear some time elsewhere. Also was on chat with MS tech yesterday and they had no idea what it might be. Did all the updates, and touchpad app etc. Oh, and the issue doesn't seem to be affected by the power supply attached or not.
  13. Dub

    Dub New Member

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    joudbren is correct, this is evidently an RF and/or grounding issue. I've had my SP and type cover for a week and this just started today.

    - only when power plugged in
    - the problem did change when adjusting the kickstand, but here's why....
    - I can get the pointer to stop jittering by touching the kickstand AND the surface pro case. When I remove my hand, the pointer may be stable for a moment, then starts moving around again.
    - I can sometimes get it to stop the jittering by touching to the left of the touchpad with my left hand.

    Going out on a limb here... I'm thinking the issue might be in the type cover. In the Reddit AMA the engineers confirmed that there are high current pins in the cover connector but they did NOT confirm what the popular suspicion is; that there will be combination keyboard/extended battery cover in the works (it was in one of the discussions about an extended battery that an engineer confirmed high current connections). If so then the charging system is somehow involved with the cover connector. If it were an RF/grounding issue in the SP itself, I'd expect that the digitizer would also be affected and it's not (it operates by RF as well).

    Microsoft needs to address this post haste! Sales aren't that great and Microsoft can ill afford it if the early adopters take to the social web and the blogs about such design issues.
    Last edited: Mar 15, 2013
  14. sarpedon

    sarpedon New Member

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    The problem is definitely with the Type Cover. I have 2 Surface Pros with 2 different chargers and 2 different type covers in front of me. The problem occurs on both Surfaces when used with the problematic type cover regardless of the adapter, while the other type cover has no issues on either Surface.

    I'm fairly certain the mouse had been working fine until this morning. I did run Windows Updates this morning (which I believe included a Firmware update) and I think the problem started after that. Possibly just a coincidence though.
  15. johnnyk

    johnnyk New Member

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    To add fuel to the fire I have a Surface Pro 128GB that will not respond correctly to the trackpad on a Type Cover or a Touch Cover.

    The problem I am seeing has nothing to do with a charger, because it fails to work properly whether or not the charger is plugged in. It also does not appear to be related to either keyboard, because both trackpads work just fine connected to my Surface RT.

    On the Surface Pro, when you swipe across the trackpad, the cursor moves in the correct general direction. However, it barely moves and continues moving for a second or two AFTER your finger lifts from the trackpad. Several Bluetooth mice work without issue. Has anybody seen this annoying behavior?
  16. fabatist

    fabatist New Member

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    Same Problem

    Hi,

    I am with the same problem, how I can fix it?

    tks

    Fabrizio
  17. johnnyk

    johnnyk New Member

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    Closing the loop here. Today's Surface Pro Update (included firmware) fixed the issue with my trackpad(s). The type cover trackpad is working as expected now. I'm not sure what it was in today's update that fixed the problem, but I don't care. :)

    My love and appreciation of both Surface RT and Surface Pro continues to grow. I chuckle when I run a Ubuntu 12.10 VM in Hyper-V on my Pro.

    Life is good. Thank you Microsoft!
  18. Rygar

    Rygar New Member

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    I have exactly the same problem, unplug the power and it works just fine
  19. tab201@hotmail.com

    tab201@hotmail.com New Member

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    I have just purchase a Surface Pro 128 and have exactly the same problem.
    Remove the charger from the Surface and the problem dissappears.
    Installed the Trackpad Settings app and found it totally useless.
    Definately a bug. A fix would be wicked.
  20. whiteblazer01

    whiteblazer01 New Member

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    I'm not experiencing such erratic behavior so much as I am experiencing an non-sensitive trackpad (in addition to the cover occssionally not working). I find I rarely use the trackpad simply because its lack of precision is too frustrating to use. When typing documents in Word, simply adjusting the tab markers on the ruler is quite a challenge. I think I may just get a mouse.

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