Gerade ist unverhofft mein Rechner ausgegangen weil die Temperatur etwas zu hoch war. Um diesen Schock vorzeitig zu erkennen helfen ein paar nette Icons im gPanel

recht einfach geht es wenn man lm-senosors und das applet dazu installiert.
sudo apt-get install lm-sensors sensors-applet
dann nach den ansprechbaren Sensoren suchen
sudo sensors-detect
Alle Dialogfenster kann man mit YES beantworten. Damit die lm-sensors nach dem reboot funktioniert muss noch einiges in die /etc/modules eingetragen werden.
#----cut here----
# I2C adapter drivers
i2c-nforce2
# modprobe unknown adapter NVIDIA i2c adapter
# modprobe unknown adapter NVIDIA i2c adapter
# modprobe unknown adapter NVIDIA i2c adapter
# Chip drivers
w83791d
# no driver for Analog Devices ADT7475 yet
it87
coretemp
#----cut here----
Do you want to add these lines automatically? (yes/NO) hab ich lieber per Hand gemacht.
sensors
und man kann schon einige Werte sehen. Nach einem Reboot kann man im Panel -> rechte Maustaste -> Zum panel Hinzufügen->"Hardware Sensor Monitor" hinzufügen, und auf den eigenen Bedarf anpassen. acpitz-virtual-0 Adapter: Virtual device temp1: +40.0°C (crit = +75.0°C) w83791d-i2c-1-2d Adapter: SMBus nForce2 adapter at 1c80 in0: +1.26 V (min = +0.00 V, max = +3.06 V) in1: +1.52 V (min = +0.00 V, max = +3.06 V) in2: +1.26 V (min = +2.82 V, max = +3.79 V) ALARM in3: +3.06 V (min = +0.00 V, max = +0.00 V) ALARM in4: +0.94 V (min = +0.13 V, max = +0.00 V) ALARM in5: +1.10 V (min = +0.00 V, max = +0.00 V) ALARM in6: +1.23 V (min = +2.05 V, max = +2.05 V) ALARM in7: +2.90 V (min = +0.00 V, max = +0.00 V) ALARM in8: +3.22 V (min = +0.00 V, max = +0.00 V) ALARM in9: +1.89 V (min = +0.00 V, max = +0.00 V) ALARM fan1: 0 RPM (min = -1 RPM, div = 8) ALARM fan2: 0 RPM (min = 42187 RPM, div = 8) ALARM fan3: 0 RPM (min = -1 RPM, div = 8) ALARM fan4: 0 RPM (min = 42187 RPM, div = 8) ALARM fan5: 0 RPM (min = -1 RPM, div = 8) ALARM temp1: +37.0°C (high = +0.0°C, hyst = +0.0°C) ALARM temp2: +37.0°C (high = +80.0°C, hyst = +75.0°C) temp3: +37.0°C (high = +80.0°C, hyst = +75.0°C) cpu0_vid: +1.419 V beep_enable:enabled it8718-isa-0290 Adapter: ISA adapter in0: +1.22 V (min = +0.00 V, max = +4.08 V) in1: +3.22 V (min = +0.00 V, max = +4.08 V) in2: +0.00 V (min = +0.00 V, max = +4.08 V) ALARM in3: +2.96 V (min = +0.00 V, max = +4.08 V) in4: +2.91 V (min = +0.00 V, max = +4.08 V) in5: +0.00 V (min = +0.00 V, max = +4.08 V) ALARM in6: +0.00 V (min = +0.00 V, max = +4.08 V) ALARM in7: +2.83 V (min = +0.00 V, max = +4.08 V) in8: +2.99 V fan1: 2576 RPM (min = 3245 RPM) ALARM fan2: 0 RPM (min = 3245 RPM) ALARM fan3: 0 RPM (min = 0 RPM) temp1: +34.0°C (low = -1.0°C, high = +127.0°C) sensor = thermal diode temp2: +42.0°C (low = -1.0°C, high = +127.0°C) sensor = thermistor temp3: -55.0°C (low = -1.0°C, high = +127.0°C) sensor = thermistor cpu0_vid: +0.000 V coretemp-isa-0000 Adapter: ISA adapter Core 0: +47.0°C (high = +82.0°C, crit = +100.0°C) coretemp-isa-0001 Adapter: ISA adapter Core 1: +47.0°C (high = +82.0°C, crit = +100.0°C) coretemp-isa-0002 Adapter: ISA adapter Core 2: +42.0°C (high = +82.0°C, crit = +100.0°C) coretemp-isa-0003 Adapter: ISA adapter Core 3: +38.0°C (high = +82.0°C, crit = +100.0°C) Vielen Dank für den Tipp von Easyy-S (www.ubuntufreunde.de)