oxidecomputer / oxidecomputer/propolis

nvme: Ubuntu uses nvme temp sensor on dashboard

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Dominant language
Rust
Stars
270
Forks
42
Avg merge
4d 5h
Merged PRs (30d)
6

Description

I figured it was worth mentioning, it seems the Ubuntu 26.04 default dashboard when you login shows temp, and having no where else to find it it gets it from the nvme driver.

Welcome to Ubuntu 26.04 LTS (GNU/Linux 7.0.0-28-generic x86_64)

 * Documentation:  https://docs.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/pro

 System information as of Fri Sep 11 02:27:31 UTC 2026

  System load:  0.08              Processes:               120
  Usage of /:   2.0% of 95.85GB   Users logged in:         0
  Memory usage: 3%                IPv4 address for enp0s8: 172.30.0.14
  Swap usage:   0%                IPv6 address for enp0s8: fd7a:a62:9c1d::7
  Temperature:  -273.1 C
root@ubuntu-pxe-server:~# cat /sys/devices/pci0000\:00/0000\:00\:10.0/nvme/nvme0/hwmon0/temp1_input
-273150

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the Ubuntu 26.04 dashboard output and inspect the NVMe temperature at /sys/devices/pci0000:00/0000:00:10.0/nvme/nvme0/hwmon0/temp1_input. Trace how the NVMe driver exposes this value; done means the dashboard no longer receives -273.1 C as the sensor reading.

Written by the indexing model from the issue text.

Assessment

Tech stack
linux, rust, ubuntu
Domain
operating-systems
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
45/100

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