HoundofMeath

I obviously got my posts mixed up on this one.  I apologize for that.

Creating a new post at the bottom of the thread.

TB

I just paired a Targus bluetooth mouse with a Samsung tablet PC--totally different hardware from yours. But my first impression was horror at the mouse pointer lag. The mouse pointer is jerky and delayed and not smooth at all.

Checking the Internet I find many reports of similar problems with bluetooth mice on all sorts of hardware.

My guess is that this is a generic problem with bluetooth and it's just not good for pointing devices. When browsing for wireless mice in the shops 95% of them are normal wireless (2.4 GHz) and only one or two are bluetooth. I can't help feeling there is a reason bluetooth mice are rare, especially since so much modern hardware has bluetooth built in. Why would you take up a USB port with a dongle if you didn't need to?

Here is a link for a basic troubleshooter on Bluetooth

support.dell.com/.../document

In this case it sounds like the mouse is fine and is able to pare with the system with no further issues.  The problem is in the curser lagging when using the travel mouse.

You may have already tried this but I want to make sure.  If you use the Trackpad or and external USB mouse do you notice the same problem? If it is a possible software problem, then the same software could possibly interfering with all input devices.

If Track pad or USB mouse works fine my next suggestion if possible will be to try other Bluetooth devices. To find out if it is only the mouse that is having problems or all Bluetooth devices.

TB

I just got an E6420 running W7 32bit  4GB with built in WIFI/bluetooth radio...I have tested two Dell BT mice, one being a large older model and both show the same lag. 

The mouse setup worked fine with my old D630 which had an inexpensive miniature BT dongle that uses Broadcom software

As I am writing this post I finished disabling the onboard BT and using the BT dongle + software....It all works fine now.  I suspect there is a problem with the built-in Bluetooth hardware/drivers.

Thanks for the replies people.  

GuillermoP62 - thanks for taking the time to give your experiences.

I think Dell and Logitech (who manufacture this re-badged mouse) need to get together and come up with new firmware!  I have uninstalled the Logitech software from my laptop and this made no difference - lag is still there.  It has to be the drivers, no?

DELL-Terry B - trackpad and external work fine.  Also, I have tried 3 different BT mice and issue persists with all of them.

Hello, I'm on a Dell E6520 and am experiencing the bluetooth lag on a keyboard! tested on other systems and do not have the problem. Something is up with Dell's bluetooth hardware or software.

Anyone have an update on this? The bluetooth issues on this laptop are very bad.

I also experience the same issues using a Logitech V470 travel mouse and Dell's own Bluetooth Mouse and Keyboard.  The laptop is a Latitude E6320 and the Bluetooth adapter a TrueMobile 375 module.  I did not have this issue on my previous E6400 laptop.

This problem can be resolved by purchasing a $2 mini usb bluetooth adapter off ebay. Don't ask me why a $2 adapter off ebay works flawlessly but dells business class does not!