I want to clarify. Waydroid Helper only does apt update and you should NEVER EVER run apt upgrade on UbuntuTouch as this will most likely break your installation. Whatever causes your issue it is probably not related to WaydroidHelper

Ok I understand. But after make an apt-get upgrade I have the same result than make install waydroid with waydroid-helper.

Even the code pin screen is changed. on my phone (on a fresh install )
It's why I thought that.

I write here to alerte other Redmi note 9s user who would like install waydroid with waydroid helper it's not an intuitive result, I had to test, and reinstall several time to almost understand

@phiibuntu Because you are on the latest RC you are getting the next OTA-21 please read blog for info https://ubports.com/blog/ubports-news-1/post/ubuntu-touch-ota-21-call-for-testing-3796 the login pin number screen is nothing to do with WayDroid and is part of the normal update process.

I only see that install Waydroid with waydroid helper make same problem that when I make apt update and apt-upgrade myself so I think that there's an apt-update AND apt-upgrade in waydroid helper script or something like that.

I really think waydroid helper make apt-update AND apt-upgrade and complicate everything (it's my point of view ).

Then android app works UT app works. last thing (but not here) gps if I solve that too I 'll make UT my only main phone

(Happy new year anyway )

Only way to install it is to reflash mui official rom and then reflash it with ubports installer

This may sound strange but I really like my Xiaomi phone because of that fact : When things go bad there is always a way out!

@phiibuntu said in segmentation fault after apt-upgrade (on rw system):

Edit: a clue perhaps, like when I make apt upgrade, the waydroid helper modify code pin screen of UT (really modernise it).

That sounds like you installed/updated parts of the system that are not officially released yet ?!

There has been some work on the "code pin screen" a while ago but I can't remember it beeing officially released via any of the official channels : DEV/RC/Stable

Edit: a clue perhaps, like when I make apt upgrade, the waydroid helper modify code pin screen of UT (really modernise it).
In fact I ask if waydroid helper doens't make itself and apt upgrade finally
because same causes produce same effects (I think lol)

Now I think system rw managed by waydroid helper make same issues that when I do
$ adb shell
$ sudo mount -o remount,rw /
without install waydroid.

So the problem is perhaps on the xiaomi model, or about UT installation, if it works fine on your phone.

1/ Waydroid work fine on my phone, but then no UT app works after install it (because I think waydroid helper install it with rw system so I reproduce the issue in the same way without Install Waydroid to test it an try to understand why).
so only way to use waydroid on xiaomi redmi note 9S is to use only android app...so it seem using ubports was not really logical

2/ can't flash again my phone (error : Error: adb:preparesystemimage: Error: {"error":{"code":126,"cmd":"adb -P 5037 shell mkdir -p /cache/recovery"},"stderr":"error: Exec '/system/bin/sh' failed: No such file or directory") Only way to install it is to reflash mui official rom and then reflash it with ubports installer I only can factory wipe to avoid all this things

As you see I work hard tu use UT but I have a lot of problems (And Apologize for my bad english :))

So my advice is to run the installer again and not do things you're not suppose to do
If you want to try waydroid, follow their install tutorial and it should be fine.
My advice also before following blindly a tutorial is to understand each step in order to be able to fix things in case there is a problem (it saved me several times).

Hope you'll get where you want without trouble.