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Unofficial Linux drivers for HP ProLiant MicroServer G7 N54L
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Unofficial Linux drivers for HP ProLiant MicroServer G7 N54L

This repository contains unofficial Linux drivers for the HP ProLiant Microserver G7 N54L.


I2C Driver for accessing voltage, temperature and fan values

The project contains a backport of the i2c_piix4 kernel module from Linux 4.5 that allows one to access the Winbond W83795ADG in order to read sensor values with lm-sensors. The module is confirmed to work with Kernel 3.13 onwards.

After installation of the DKMS module, issue the following commands to reload the respective modules:

# rmmod sp5100_tco
# rmmod w83795 jc42 i2c_piix4
# modprobe -a i2c_piix4 jc42 w83795

The sensors values can now be accessed using the sensors command.

When manually installed, the file config/modules-load.d/hp-n54l.conf has to be copied to /etc/modules-load.d/hp-n54l.conf in order to automatically load the modules after reboot.

The file config/sensors.d/hp-n54l.conf configures limits and label names for sensors. Issue # sensors -s to reload the file after copying it to /etc/sensors.d/hp-n54l.conf.

The i2c-piix4 module conflicts with the onboard watchdog. Therefore it has to be ensured that sp5100_tco is unloaded before loading i2c_piix4. The module should be blacklisted to it from being loaded automatically. This can be achieved by copying the file config/modprobe.d/blacklist-n54l-watchdog.conf to /etc/modprobe.d/blacklist-n54l-watchdog.conf.


The modified drivers can be built and installed using DKMS either manually or through the included Debian package.

Manual installation with DKMS

DKMS (Dynamic Kernel Module Support) enables generating Linux kernel modules outside the kernel source tree. It rebuilds the modules automatically when a new kernel is installed.

The content of this repository has to be copied to /usr/src/hp-n54l-<VERSION>. The following commands install the DKMS module:

# dkms add -m hp-n54l -v <VERSION>
# dkms build -m hp-n54l -v <VERSION>
# dkms install -m hp-n54l -v <VERSION>

To remove the module:

# dkms remove -m hp-n54l -v <VERSION>

Installation of the Debian package

On Debian based distributions debuild -us -uc can be used to package the drivers into a hp-n54l-dkms\*_all.deb file which can be installed using dpkg -i.

On Ubuntu the drivers can be installed from the following Personal Package Archive (PPA)


Packaging and patches copyright 2015 Christian Fetzer. Kernel modules are part or Linux. Linux is copyrighted by Linus Torvalds and others. This project is licensed under the terms of the GNU General Public License (GPL-2+).

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