# Fujitsu Lifebook T904

## Troubleshooting

### Wacom Digitizer (056a:5002)

Requires a custom module not currently avalable in the stock 3.14.4-1-ARCH kernel.

       See Hardware Modules for how to enable the digitizer

### Fingerprint reader

According to the Fprint wiki, the reader does not appear to be a supported model. If the reader is unused, it is recommended that the device be physically disabled in the bios.

### Fan noise

Fan noise was an issue on initial BIOS revisions. The change log for BIOS version 1.08 noted a fan settings update which has since resolved the fan noise issue.

User confirmations of the fix may be found after post #540 [1]

## Hardware modules

This article or section is out of date.

Reason: The following information may be outdated on kernels proceeding version 3.14.4-1-ARCH. (Discuss in Talk:Fujitsu Lifebook T904#)

### Wacom Digitizer

The wacom kernel module (wacom.ko) loaded by default in the 3.14.4-1-ARCH kernel does not support the T904's integrated digitizer 056A:5002 (VendorID:DeviceID). However, the Linuxwacom project has included support in their upstream kernel module and xf86-input-wacom-git package which are not yet available in the official arch repositories.

Until future updates are released, users may obtain a functional digitizer by installing xf86-input-wacom-git and building the kernel module as described below:

#### X11 wacom input

Install xf86-input-wacom-git via building from source or using an AUR helper)

#### Wacom Kernel Module

The non-functional default wacom kernel module (wacom.ko) is located in /lib/modules/3.14.-4-1-ARCH/kernel/drivers/input/tablet/wacom.ko This module must be replaced with the latest Linuxwacom project module as follows:

First, ensure that git and linux-headers are installed:

    # pacman -S git linux-headers

Create a new directory to build the wacom.ko module in:

    $ mkdir ~/builds
    $ cd ~/builds

Download the latest module source from the Linuxwacom project:

    git clone git://git.code.sf.net/p/linuxwacom/input-wacom

Build the module with autogen.sh:

    # bash ~/builds/input-wacom/autogen.sh

As described in the autogen.sh output, copy the module to the appropriate directory:

    # cp ~/builds/input-wacom/3.7/wacom.ko /lib/modules/3.14.4-1-ARCH/kernel/drivers/input/tablet

In case the old wacom module was previously loaded, ensure it is removed:

    # rmmod wacom.ko

Insert the new module:

    # insmod ~/builds/input-wacom/3.7/wacom.ko

Ensure modprobe has the correct aliases:

    # depmod -a

Note: A reboot will likely be required for functional xorg touch/pen input.
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