[FEATURE]: Add Ubuntu 24.04 LTS

[cmd0s]

Is your feature request related to a problem? Please describe.

Ubuntu 24.04 LTS fix some problems that Ubuntu 23.10 have on Raspberry Pi 5

Describe the solution you would like to see implemented

rpi-imager should list Ubuntu 24.04 LTS for Raspberry Pi 5 and Pi 4/CM4

Describe alternatives you've considered

rpi-imager should list Ubuntu 24.04 LTS for Raspberry Pi 5

Additional context

https://ubuntu.com/download/server https://cdimage.ubuntu.com/ubuntu-server/daily-preinstalled/current/noble-preinstalled-server-arm64+raspi.img.xz

Version

1.8.5 (Default)

[lurch]

This is something that Ubuntu themselves will have to request. ping @waveform80 (who works for Canonical).

[waveform80]

This is slightly bizarre. This is the second report I've had of 24.04 not showing up in rpi-imager in the last couple of days, but I added it last week straight after the release, as usual, and it shows up for me quite happily:

Does the imager cache the JSON it downloads somewhere? I didn't think it did, but perhaps something changed since the last time I looked?

If not, I guess that leaves the possibility of invisible proxy caching in user's networks? In any case, anyone encountering this: be assured that 24.04 LTS is in the list; if it's not showing up for you, it may be worth investigating if your network is silently caching things!

[XECDesign]

There's a service that runs every 5 minutes to expand os_list_imagingutility_v3.json into os_list_imagingutility_v4.json. I had a look through the logs to see how reliable it is. Tthe last time it failed to fetch the ubuntu entries was on the 18th of April and it was resolved 5 minutes later.

Unless you got very unlucky and happened to try it in that 5 minute internal, or selected the wrong pi model, it should be there.

Edit: Actually, if it was added last week, the last time it failed isn't too relevant. So yeah, it should've been there the entire time since it was added.

[tdewey-rpi]

Additionally, you may see results you perceive to be 'stale' if you just have the application open and re-open the OS list. To avoid excessive server use, we will retain the OS list data after the initial download as Imager opens - with the device filter just providing a subset of the loaded list at runtime.

In short, probably worth reloading the application if you think you have 'stale' data.

[lurch]

...and by "reloading" I believe Tom means closing RPi Imager, and then running it again :slightly_smiling_face:

[tdewey-rpi]

Addressing the issue:

1. Unfortunately, this isn't a feature request against Raspberry Pi Imager, but against the OS list. This isn't the forum for such requests.
2. I cannot reproduce the report - like @waveform80, I see 24.04 LTS clearly at the top of the Ubuntu subsection. The only mechanism I can see where you might have not found it either by an intrusive caching layer unique to your configuration, or because you had rpi-imager open from before the Ubuntu sublist was updated - in which case the behaviour of rpi-imager is to not re-download the OS list until you restart the application.

Given the above, I'm marking this as 'Won't Address'. If you continue to fail to see 24.04 after completely closing rpi-imager and then re-opening it, I am prepared to entertain a Bug rather than a Feature Request.