Dell XPS 15z Trackpad Scrolling Problem

[1arryb]

Here's a little more color on ann@dell's reply:

1) Find a USB mouse and plug it in. This will make the rest of this go so much easier (your trackpad isn't working, remember?).

2) Go to Dell's Driver's and Downloads section for the 15z, as she suggests. You need BOTH: a) The AO8 BIOS upgrade; and b) the 2.3.6.12, A04 Cypress Touchpad Driver.

Note: I have since noticed that there is an "optional" 2.3.6.26, A06 Dell-branded version of the touchpad driver up now. I haven't installed it and it wasn't needed to fix my trackpad.

3) Save to disk, but do not run, both downloads.

4) The Cypress installer (R313059.exe) didn't cleanly uninstall the previous version of the driver when I just double-clicked on it, so I explicitly uninstalled the Cypress Driver from the Control Panel then forced the Cypress installer to run as Administrator by right-clicking on it in Windows Explorer.

5) Run "as Administrator" the BIOS upgrader (L5112A08.exe). This is a scary installer that flashes the screen and beeps like an overloading phaser, but it ran fine.

After this, all trackpad features, including clicks, scrolling, and gestures, were working for me.

Good luck

[critidoc]

still having problems, replaced the palm rest and trackpad, updated drivers and bios still works like crap

[Urnst]

Originally Posted by 1arryb

4) The Cypress installer (R313059.exe) didn't cleanly uninstall the previous version of the driver when I just double-clicked on it, so I explicitly uninstalled the Cypress Driver from the Control Panel then forced the Cypress installer to run as Administrator by right-clicking on it in Windows Explorer.

This worked wonders for me. Having already upgraded to the newest bios a while ago, I removed the Cypress Touchpad Driver from add/remove software (it was the dell branded one). I also removed the device from Device Manager, just to be sure. Then I rebooted and installed the A04 Cypress drivers (not dell branded A06).

Two-finger scroll has now gone from being completely useless (jumpy and sometimes not even working) to being silky smooth. Amazing!

[MSGaldenzi]

I am using the dell branded ones... the one that ends in .26 and its not working optimally. I will try a full un-install of the drivers and Install the a04 version, maybe that will help.

Urnst, can you test something for me (well anyone with the ao4)... I had them before and when i would stop the tap to click option and restart it would reset to default... can anyone test that and see if it still does that? I hate using the trackpad as a left mousekey.

[chris4x4]

I've been having the same problems. The vertical scroll on my trackpad would work fine for a while then lose all response. Sometimes randomly scrolling on its own. Dell support has installed and uninstalled various drivers with no luck. I found this website tonight while online with dell support. Can anyone tell me how to go about removing the cypress drivers and allowing the windows drivers to operate the touchpad? Also, when using the windows drivers will vertical scroll on the trackpad still function? Thank you and sorry for the long post.

Edit: I'm not talking about to finger vertical scrolling as I mostly use single finger vertical scrolling.

[chris4x4]

Ok. I cant find the Cypress A04 driver, so I uninstalled all teh drivers for the cypress touch pad, leaving only the driver in windows. 2 finger scroll works great, as does one finger scroll. No more jumping of teh cursor, or anything.

[MSGaldenzi]

I didn't know that Windows had a built in driver for 2 finger scrolling.... can you confirm this...

[chris4x4]

Originally Posted by MSGaldenzi

I didn't know that Windows had a built in driver for 2 finger scrolling.... can you confirm this...

I was wrong. Only 1 finger scroll. Sorry for the mistake.

[MSGaldenzi]

Its all good, thats what I thought. I use 2 finger scrolling all the time and cant give that up just yet. I tried the uninstall and attempted the 1 finger scolling... just could not get used to it.

[chris4x4]

I uninstalled all teh Cypress drivers, and reinstalled the A04 driver, and it worked fine for 1 day. Uninstalled again, and working the windows driver until another option becomes availible.