= Trouble Shooting - Computers

== Information about the Computers

You can find several informations about the Computer on La Palma on the [[computing Computing page]]

== Restarting a hanging PC

__Symptom__

- the PC can't be reached per ssh, or something similar
- be aware, that when all computers (expect for gate) seems to hang, its normally data which hangs, the other only try to mount the home from data, so they hang too

__Solution__

if it's not to late in the night, try to call an expert before you power cycle the computers

When you have to restart more than one PC, be sure you follow the Start-up procedure mentioned [[computing here]]

Power cycle the hanging computer from any other computer on the FACT internal network:

- go in /usr/local/bin
- execute one off the following scripts: aux_off, gui_off, gate_off,  daq_off, data_off
- wait a few minutes
- execute one off the following scripts: aux_ON, gui_ON, gate_ON, daq_ON, data_ON
- Rebooting will take a few minutes for aux, gui, gate and about 10 min. for daq and data, respectively 

or power cycle the hanging computer manually from the FACT-container