System Monitor Indicator comes with options to display CPU load, memory usage, and other system stats, but currently does not include an option to display temperature (of the CPU, HDD, SSD, GPU, etc.).
There seems to be functionality built in for adding additional sensors by applying a command (by clicking "New"). However, I don't know how, and I cannot find any documentation that describes this feature.
My system is set up to report temperature as so:
user@host:~$ sensors acpitz-virtual-0 Adapter: Virtual device temp1: +27.8°C (crit = +106.0°C) temp2: +29.8°C (crit = +106.0°C) coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +79.0°C (high = +87.0°C, crit = +105.0°C) Core 0: +79.0°C (high = +87.0°C, crit = +105.0°C) Core 1: +77.0°C (high = +87.0°C, crit = +105.0°C) pkg-temp-0-virtual-0 Adapter: Virtual device temp1: +79.0°C
This question refers to the package indicator-sysmonitor version 0.4.3 from 13.04 raring, although currently I am running it on a 13.10 saucy installation as it has not yet been updated in the ppa: