@domubpkm

To stop the script:

sudo pkill backup-ip.sh

It's true that I've not taken into account the case where LTE is activated, but mobile data is disabled.

@kdb7

You can publish on youtube or other video platform.

For the record I will publish a new version with update Signal-Desktop version, in early june.

@domubpkm

Great!

In any case in a train you cannot expect a perfectly stable connection!

@bunt7

You can find a workaround script, for Network connectivity jump here:

https://forums.ubports.com/post/95548

I've reported the bug here:

https://gitlab.com/ubports/porting/reference-device-ports/android11/volla-phone-22/volla-mimameid/-/work_items/26

@brenno.almeida

Would you consider doing a confined version of the app without a background deamon, and with the go part only running when the app itself is running? I think it would be usefull for those who don't want notifications all the time, and don't want their battery to be drained by the deamon or are not comfortable with having a whatsapp deamon running at all time. And it would be easier to publish on the openstore!

Thank's a lot for your work!

@domubpkm said:

May you please suggest a complete procedure to test

1°) With adb create the script with

nano /home/phablet/backup-ip.sh

and paste the content

2°) Give execution rights:

chmod +x /home/phablet/backup-ip.sh

3°) Start the script with:

sudo su -c "/home/phablet/backup-ip.sh > /home/phablet/log-backupip 2>&1 &"

It will then be running until next reboot.

@domubpkm said:

Did you notice side effects (you said that, i have a Volla 22 too) ?

The only thing that I've noted so far, is that If I enable airplane mode with a wrong timing (bad luck), it might go into a loop of disabling / re-eabling the modem. But then I switch off and on, the airplane mode it goes fine.

@lduboeuf said:

did you reported the issue to the porter ?.

I plan to do so when I have time.

Here is the script that I currently use, it improves greatly the usability of my phone, because it reduces dramatically the need to go in the settings to restart cellular connexion, in order to get access to the Internet.

Though it's not perfect and might have side effects, use at your own risks!

#!/bin/bash

MODEM="/ril_0"
HOST_TO_PING="8.8.8.8 www.google.com ubports.com 1.1.1.1 9.9.9.9 cloudflare.com amazon.com microsoft.com wikipedia.org apple.com"

function get_modem_iface()
{
/usr/share/ofono/scripts/list-contexts |awk -v target="$1" '
/^\[ \/ril_/ { r=$2 }

/Type = internet/ { i=1 }

/Interface=ccmni/ && r==target && i {
    sub(/^.*Interface=/, "")
    sub(/ .*/, "")
    print
    exit
}
'
}

IFACE=$(get_modem_iface $MODEM)

i=0;

while true; do
    if [ "$IFACE" = "" ]; then
        IFACE=$(get_modem_iface $MODEM)
    fi
    ifconfig $IFACE | grep -v inet6 | grep inet > /dev/null 2>&1
    if [ "$?" -ne "0" ]; then
        gdbus call --system --dest org.ofono --object-path "$MODEM" --method org.ofono.NetworkRegistration.GetProperties | grep "'Technology': <'lte'>" > /dev/null 2>&1
        if [ "$?" -eq "0" ]; then
            date
            echo "IFACE: $IFACE";
            echo "IP loss detected"
            /usr/share/ofono/scripts/offline-modem $MODEM
            /usr/share/ofono/scripts/online-modem $MODEM
            sleep 5;
            IFACE=$(get_modem_iface $MODEM)
        fi
    else
        route=$(ip route show default)
        if [ "$route" = "" ]; then 
            gdbus call --system --dest org.ofono --object-path "$MODEM" --method org.ofono.NetworkRegistration.GetProperties | grep "'Technology': <'lte'>" > /dev/null 2>&1
            if [ "$?" -eq "0" ]; then
                date
                echo "IFACE: $IFACE";
                echo "Route loss detected"
                /usr/share/ofono/scripts/offline-modem $MODEM
                /usr/share/ofono/scripts/online-modem $MODEM
                sleep 5;
                IFACE=$(get_modem_iface $MODEM)
            fi
        fi
    fi
    
    i=$((i+1))
    if [ "$i" -gt "15" ]; then
        i=0;
        gdbus call --system --dest org.ofono --object-path "$MODEM" --method org.ofono.NetworkRegistration.GetProperties | grep "'Technology': <'lte'>" > /dev/null 2>&1
        if [ "$?" -eq "0" ]; then
            internetaccess=0;
            for host in $HOST_TO_PING ; do
                ping -W 1 -c 1 $host >/dev/null 2>&1
                if [ "$?" -eq "0" ]; then
                    internetaccess=1;
                    break;
                else
                    echo "Ping to $host failed, trying next one in 4s ...."
                    sleep 4;
                fi
            done
            if [ "$internetaccess" -eq "0" ]; then
                    date
                    echo "IFACE: $IFACE";
                    echo "Internet access loss detected"
                    /usr/share/ofono/scripts/offline-modem $MODEM
                    /usr/share/ofono/scripts/online-modem $MODEM
                    sleep 5;
                    IFACE=$(get_modem_iface $MODEM)
            fi
        fi
    fi
    sleep 20;
done

@domubpkm said:

A good test is to see if the connection is still lost after reboot or complete shutdown and startup.

This is not really the purpose of the script for now. The purpose of the script is that, when you keep the phone up, and you travel, Internet remain accessible at any moment, without needing to manualy go in the settings to restart the connection.

@projectmoon

Can you do

journactl -r | grep 99captive_portal

?

@projectmoon

Ok well I don't know, are you testing with a specific wifi network with captive portal? Does it support RFC 8910 and RFC 8908, or is it legacy? Did you try with other wifi networks?

Ps: You can also retry with mobile data disabled, sometimes it's better.

@projectmoon

What do you mean, do you get the notification when you connect to the wifi network with captive portal?

(You should not open the app from the app grid, it is useless, it will open when you click on the notification, in the notification panel, like in the video)

@projectmoon

With the latest version of the script you need to install this app first:

https://github.com/pparent76/Captiveviewer-UT/releases/tag/0.1.0

Then install the latest version of the script, and chmod +x the script, and reboot

https://gitlab.com/pparent/lxc-android-config/-/blob/main/etc/NetworkManager/dispatcher.d/99captive_portal?ref_type=heads

Then you should get a notification when you connect to a wifi with captive portal, and if you click the notification it will open the captive portal app.

@domubpkm

I've written a workaround script that I'm currently testing, that detects an IP loss on the interface and automatically reinitialize the modem when it happens. For now it seems to work quite well, and even seems to have a positive impact on VoLTE connexion. I will test it for a few days, and if everything goes well, I will publish it here.

@kdb7

Ok but could you record the screen when it fails to import the file with:

https://open-store.io/app/screenrecorder.ubports

because I fail to see what could be happening.

@kdb7

Can you tell which version of UT are you using, and post a video screenshot? because on all the phones that I own it works fine, so I would need to see visually whats happens on your phone.

@kdb7

You need to open file directly from Signal app, by clicking on the "+" in the bottom right hand corner of a chat, and then select the gallery app, to select the file to import.

It's true that there is currently something that should not be: Signal appears in the application grid in content Hub, as an option to export an image to, it should not, this does not work that way, only the other way around import the picture from the signal app. I will correct that in next revision.

@ChromiumOS-Guy

I'm not sure to understand your message? You want to give me a script about what?

Thank's!