[BUG] Default screen saver resource usage

[hagaygo]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Using the ubuntu-mate image, noticed that after a while when container is not used/idle, The CPU usage is quite high.

After investigating the issue i found that the default screen saver is using the resources :

When disabling the screensaver or changing to blank screen the CPU usage is nearly nothing.

Expected Behavior

I think it is better to change the default screen saver to less resource intensive one or at least allow to change it via the environment parameters.

Steps To Reproduce

Run a new instance and wait 30 minutes (or change the screen saver time to less)

Watch docker status CPU usage for the container.

Environment

- OS: RPI OS

CPU architecture

arm64

Docker creation

empty image

Container logs

no logs are relevant

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

[thelamer]

Images have been completely overhauled, if you still have an issue open a new one.

[hagaygo]

Hi

Tested the 2 newest version available.

The newest (ubuntu-mate-version-e70ae8df) does not work at all , getting 404 error.
The one after (ubuntu-mate-version-cacab7fc) still uses a "heavy" screen saver.

So after idle time reached , the CPU usage spikes :