Original guide
2. Install necessary softwares (replace with version above)
wget https://download.foldingathome.org/releases/public/release/fahclient/debian-stable-64bit/v7.6/fahclient_7.6.21_amd64.deb
wget https://download.foldingathome.org/releases/public/release/fahcontrol/debian-stable-64bit/v7.6/fahcontrol_7.6.21-1_all.deb
sudo dpkg -i --force-depends fahclient_7.6.21_amd64.deb
sudo dpkg -i --force-depends fahcontrol_7.6.21-1_all.deb
3. Edit /etc/fahclient/config.xml
<config>
<fold-anon v="false" />
<gpu v="true" />
<power v="full" />
<user v="username" />
<team v="12345" />
<passkey v="" />
<slot id="0" type="CPU" />
<slot id="1" type="GPU" />
</config>
4. Restart service
sudo /etc/init.d/FAHClient stop
sudo /etc/init.d/FAHClient start