I have searched all over the net and have not found an answer to this. When my m170 is running on battery the pointer icon moves as it should. If the xps is plugged into the ac adapter the touchpad registers the "touch" (the synaptics icon at the bottom registers green like it always does) but the pointer icon will not move. This is driving me nuts as I have to keep unplugging the xps when the battery is low to get the pointer to move. Any help would be greatly appreciated. I tried to update the synaptics driver to see if it woule help and it showed no difference.
Welcome to the forums :smileyhappy:
Sonds like you've done everything you can (or we could suggest), so you're probably best now contacting Dell tech support, to see what they suggest?
It may require a replacement touchpad, in which case they'll send a technician to replace it for you ;)
From experience, I've found that: “Beauty is in the eye of the beer-holder”!!
XPS M1730: Smoke Grey Magnesium Alloy Chassis - with White LED Backlights17" UltraSharp WUXGA Widescreen TFT (1920 x 1200) with TrueLifeIntel Core 2 Duo Processor T9300 @ 2.50GHz (800 MHz FSB, 4MB L2 cache)4GB (2x 2GB) Patriot Signature PC2-5400 @ 667MHzDUAL 512MB Nvidia 8800M GTX cards in SLi + 128MB Ageia PhysX 640GB SATA II (2x 320GB WD Scorpio Black 7200rpm)8x Super-Multi DVD±RWCreative X-Fi Notebook (ExpressCard) + Creative GigaWorks T40 Series IIIntegrated 2MP WebcamDell Wireless 355 Bluetooth 2.0 ModuleIntel Next-Gen Wireless-N Mini-CardTV Tuner and Dell Travel Remote Control 4-in-1 Flash Card Reader (SSD/MMC/MS Pro/xD)
230W AC Adapter / 9-cell Lithium-Ion BatteryWindows 7 Home Premium (64bit)