Battery life is usually less than expected due to unoptimized software and processors clocking too high. On my devices, I set the CPU governor to 'powersave', which reduces power usage but also performance.
There are multiple scaling governor settings which might not be available on all devices (depends on kernel configuration)

• performance : high frequency; slightly increased performance and battery consumption
• powersave : low frequency; reduced performance and superior batter life
• schedutil : changes according to the scheduler (default on my device)

This command list the available governors to set for each core (should be more than those I listed above)
sudo cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_governors
Report which governors are currently selected for each core:
sudo cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
Set the scaling governor to powersave to every core:
echo "powersave" | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

The commands above do not need mounting root as read-write, any change is reverted on reboot.
I tried to make an app for configuring these (a while ago) but I had trouble with sudo.

@ds2k5 You can enable the SSH server from UT tweak tool.

@Salah I believe it should work fine, as these icons neither large (to fill the partition) nor a dependency to something.
I had modified lomiri's qml by editing some files, and there wasn't any issue.
You can try, and if it fails reflash.

@mihael In the same directory normal Debian-based distros with NetworkManager do:
/etc/NetworkManager/system-connections/WIFI_SSID.nmconnection

@wally Just ported the app to 20.04, changing icons works!
This is the new repository: https://gitlab.com/ikozyris/custom-phablet-tools,
I plan to publish it to the open store if it works for others as well.
Took me ~2 hours.
I might add a way to add custom icons, currently they are downloaded from https://framagit.org/ubuntouch-fr-dev/custom-phablet-tools/raw/media/icons/[APP-NAME.EXTENSION].

@Salah I'm currently rewriting the backend to not require remounting as read-write. Currently this arm64 focal .click works. Screenshot:

@Salah said in Customizing Icons:

If you go to icons folder, you well see several icon folder with icons including the main one which if officially used (suru) and they are not used.

These are available if you click on the top-left icon. Select one from the list

Salah said in Customizing Icons:

have installed it, which apparently not available in Open Store

I submitted the app to the OpenStore, but I was suggested to rewrite the scripts so they don't require remounting the rootfs as read-write. I have made some progress, and the icon names had to be renamed. So the old versions don't work, unless it fetches the icons from a snapshot of a previous version. I can easily fix the hacky version temporary to work fully, but better way for the newer, cleaner method, which is WIP.

Salah said in Customizing Icons:

Is there any way I can Add my icons to this app !!

Yes, you have to rename your icons to match the names of those in the repo. Put them in a folder. Then write that path (absolute path and the last /) in the text box below

@Enrico13011978 But I have changed the backend to not require remounting root as read-write or sudo. I now call it Icon Changer, as I removed the wallpapers.

@kugiigi That is what Fdroid does, if I remember correctly. You submit an app via a pull request, a bot checks the source code and if everything is fine a person reviews the app and it is built on theirs servers from the git repo.

@pepijndevos I think with "Gallium" you mean Halium, which is indeed an abstraction layer between the android hardware drivers (blobs), not just LineageOS, and a normal Linux distro.

Although I don't know much about Sailfish OS, their stack seems close to ours, so you should be able to use most of their kernel code. It wouldn't be as simple as flashing a generic system image.

The rootfs is supposed to be generic, but from my experience every device needs different tweaks (so you can't just flash the rootfs), that is why the overlay method exists, which all new ports use.

You can try adapting the kernel sources to Ubuntu Touch, and then the rootfs probably from scratch. I couldn't find any port source code from Sailfish OS, as Ubuntu Touch has, which is of course necessary.

@saveurlinux Qt 6 is a problem as we are still at Qt 5.12

It should be relatively easy with a script using ffmpeg, either in Libertine or bundled in an app.
The following command should work:

ffmpeg -i input.mp3 -filter:a "atempo=1.5" output.mp3

@liam wouldn't a swapfile in the userdate partition work?

@hlbkv A Libertine app is ran inside a container. Actually Firefox has been packaged for Ubuntu Touch in the .click format, see the GitLab repository, clipboard should work there.

@bafora1 The problem is due to the confinement of snaps (the python package works out-of-the-box). Ubuntu Touch apps don't support Wayland anyway, they only work with xwayland / xmir.
It works after that command, so no need for troubleshooting.

@gwado Ubuntu Touch uses PulseAudio, commands are the same as on other "normal" Linux distros.
To list available outputs (sinks):

pactl list sinks

As the commands are the same as on Ubuntu desktop, you can search for how to do that in Ubuntu, e.g.: change default audio device, and change PulseAudio I/O output

@jittopjose I had the same problem with the snap, fixed it by allowing local connections to xhost:

xhost +local:*

On my device, Morph and the WebView in core apps works, but the keyboard doesn't show up when taping the search textfield.

@manoiese

1. If your device supports snaps, it is better to install the snap version of your prefered app with Snapz0r (from OpenStore). Some apps have alternatives, or more optimized packages built for Ubuntu Touch (e.g. Firefox), so be more specific.

2. Please read this excellent post explaining why you don't need to remount permanently the filesystem as RW. If you still think you need it, just touch /userdata/.writable_image to make the remount permanent.

APT can cause dependency tree problems and more, every long-time Linux user knows that. Just search why an immutable OS is preferred when stability and redundancy is key. OTA updates are safer and have very low chance of failing compares to dpkg.

@OOKAMI Actually hardware acceleration works. You can confirm that by checking if the default media player can play videos.

Inxi shows wrong output because the libraries it uses cannot use the intefaces exposed by Halium. It shows X11 while it is Mir, and opengl doesn't use the right driver by default. Try glxgears with different driver. I remember es2 to work.