Since I have updated to 12.04 LTS my desktop pc's fan runs permanently with high speed and is annoyingly noisy. CPU temperature is low. Here is what the sensors command gets me:
nouveau-pci-0400 Adapter: PCI adapter temp1: +48.0°C (high = +100.0°C, crit = +115.0°C) coretemp-isa-0000 Adapter: ISA adapter Core 0: +39.0°C (high = +82.0°C, crit = +100.0°C) Core 1: +40.0°C (high = +82.0°C, crit = +100.0°C) Core 2: +37.0°C (high = +82.0°C, crit = +100.0°C) Core 3: +44.0°C (high = +82.0°C, crit = +100.0°C) f8000-isa-0a00 Adapter: ISA adapter +3.3V: +3.34 V 3VSB: +3.38 V Vbat: +3.23 V fan1: 1675 RPM fan2: 959 RPM fan3: 0 RPM ALARM fan4: 0 RPM temp1: +42.0°C (high = +70.0°C, hyst = +60.0°C) temp2: +25.0°C (high = +100.0°C, hyst = +85.0°C) temp3: +24.0°C (high = +100.0°C, hyst = +85.0°C)
Same issue of noisy fan has been noted in Dell 1555 after upgrade to 12.04 with output of sensors command as below:
acpitz-virtual-0 Adapter: Virtual device temp1: +51.0°C (crit = +100.0°C) temp2: +59.0°C (crit = +100.0°C) temp3: +79.0°C (crit = +100.0°C) radeon-pci-0100 Adapter: PCI adapter temp1: +80.0°C
Is there a way to figure out which application is causing it?