Set sensitivity to 1.0

I had the same problem since I bought the pen tablet
Unplug, plug the tablet and restart osu! did not work
My tablet continues stopping when playing
If anyone know how to fix this issue please post the solution here
PS: There's a new driver for the pen version tablet in the official page so you can download it here: http://www.wacom.com/downloads/driver-detail.php?id=223

This happens to me from time to time as well.

Has been happening for quite a while, and my first inquiry (on IRC) was pretty much met with "Update your drivers".
It's worth noting that it only happens in osu!, though.

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Bumped:
This is continuing to happen for me, and has been for quite some time.

Happens to me when the nib is dying.

Other threads have reported some tablets have a standby mode where they will be less responsive (usually if the pen has not touched the surface recently). This may be the issue, though I'm not sure if such a feature is implemented on any wacom devices.

I think that this is related to osu! more than the tablets.

This will happen only in osu!, and restarting osu! will fix this. It seems to happen randomly, and I have updated drivers for my tablet multiple times since this problem started and it hasn't fixed itself.

Is there a way to view a or send a log of events in osu! when this happens?

osu! uses the Microsoft Ink API to interact with tablets (and avoid things like delays when tapping). I have tested for around 30 minutes using a wacom graphire4 without any problems. Therefore, if you are having problems, it is likely your drivers. There isn't really any logic in osu! that can fail. The reason it may only fail in osu! is because nothing else on your system actually handles the tablet using that API.

Try removing all wacom tablet drivers and using your tablet in relative movement mode (with MS drivers). See if this helps. In this mode it will not be using the Ink API if I recall correctly.

I actually experience a rather significant delay when I tap on my main computer.
That aside, I tried using my tablet on my laptop, which is running Windows 7 with no Wacom drivers, and the tablet was detected as a generic input device. While I did not get any errors within osu!, I believe using a tablet in relative movement mode rather defeats the purpose of using one in the first place. Furthermore, I don't see the uninstallation of Wacom drivers to be a practical solution to those of us affected by this.

Would it be possible for osu! to support the Wintab API as well?
http://www.wacomeng.com/windows/index.html

I am not calling it a feasible solution. I am asking you to test. Have you tested installing a fresh copy of the wacom driver on the other PC too?

If you figure out what it causing this issue, let us know. I've recently reinstalled my windows and started having this problem with my tablet in osu, I wasn't before. I have the latest drivers for the tablet directly from bamboo website (also tried the drivers on the disc that came with it that worked fine prior), I'm pretty clueless at this point and it seems to happen pretty randomly...once every hour or so it seems, 5-10 seconds where cursor doesn't respond.

The only difference that I know of between before I reformatted and now is before I had the "Tablet PC Input Service" disabled, which its been enabled since i've reinstalled. So I'm going to try disabling that again and report back if it resolves the issue.