I recenlty upgraded to Ubuntu 19.04, before the upgrade the fan speeds were normal and rarely got loud. After the upgrade the fan is always on. I searched for a fix and found out that sensors ouputs something weird. One of the sensors is detecting +511.0 C.
iwlwifi-virtual-0
Adapter: Virtual device
temp1: +31.0°C
dell_smm-virtual-0
Adapter: Virtual device
Processor Fan: 3970 RPM
CPU: +41.0°C
Ambient: +41.0°C
SODIMM: +32.0°C
Other: +36.0°C
acpitz-acpi-0
Adapter: ACPI interface
temp1: +25.0°C (crit = +107.0°C)
nouveau-pci-0100
Adapter: PCI adapter
temp1: +511.0°C (high = +95.0°C, hyst = +3.0°C)
(crit = +105.0°C, hyst = +5.0°C)
(emerg = +135.0°C, hyst = +5.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Package id 0: +42.0°C (high = +100.0°C, crit = +100.0°C)
Core 0: +40.0°C (high = +100.0°C, crit = +100.0°C)
Core 1: +41.0°C (high = +100.0°C, crit = +100.0°C)
Core 2: +40.0°C (high = +100.0°C, crit = +100.0°C)
Core 3: +40.0°C (high = +100.0°C, crit = +100.0°C)
pch_skylake-virtual-0
Adapter: Virtual device
temp1: +40.5°C
Is there something I can do or should i take my laptop to warranty(note that the laptop had windows 10 installed, I got ubuntu on it myself)