Article Number: 000125319
Touchpad Not Working on Latitude xx80 with Skylake Processors on Windows 10
Summary: This article explains how to resolve an inoperable touchpad issue on Latitude xx80 laptops with Windows 7 and Skylake processors.
Article Content
Symptoms
Latitude xx80 touchpad inoperable with Windows 7 or 10 and Intel Skylake processor
If you install Windows 7 or 10 onto a Latitude xx80 laptop with a Skylake processor, the touchpad may become inoperable due to the touchpad now being based upon the I2C protocol rather than the Legacy PS/2 protocol.
NOTE: Versions of Windows 10 PE 32-bit will not be able to recognize I2C touchpads. The Serial IO Device that leads to the I2C bus is PCI\VEN_8086&DEV_9D61 which is run by iaLPSS2i_I2C_SKL.inf. This file is not present in the Windows 10 PE 32-bit, but is present in Windows 10 PE 64-bit.
Once Windows 7 or 10 and the majority of drivers are installed, there will be no bangs in Device Manager but the touchpad will still be inoperative if the Intel Serial IO driver was not loaded. Download and install the Intel Serial IO driver for your operating system, which will provide the necessary virtual connection between the I2C bus and Windows.
Go to the Dell Support Website / Drivers & Downloads and search for the Intel Serial IO driver under the Chipset category to download the latest driver version of the file.
You may also need to install the Dell Touchpad Drivers, which can be found by following the steps above and choosing the Mouse, Keyboard & Input Devices category from the available driver menu, then downloading and installing the latest Dell Touchpad Drivers that appears under this category.
Before Intel Serial IO Driver installation:
No HID or mice devices are listed in Device Manager (Figure 1):
Figure 1: Latitude xx80 Device Manager before Intel Serial IO driver installation
The touchpad resides under the 9D61 I2C Host Controller (currently no devices are detected, Figure 2):
Figure 2: No touchpad detected
After Intel Serial IO Driver installation:
HID and Mice devices are listed (Figure 3):
Figure 3: Latitude xx80 Device Manager after Intel Serial IO driver installation
The touchpad is detected under the 9D61 I2C Host Controller (Figure 4):
Figure 4: Touchpad showing under 9D61 I2C Host Controller
Cause
No cause information
Resolution
refer to the symptoms above
Article Properties
Affected Product
Latitude 5280/5288, Latitude 7280, Latitude 13 3380, Dell Latitude 3480/3488, Latitude 5480/5488, Latitude 7480, Dell Latitude 3580/3588, Latitude 5580
Last Published Date
27 Jul 2024
Version
5
Article Type
Solution