Solutions to modem / connection problems

[Anna]

For people trying to use the Pinephone as a daily driver, the biggest showstopper appears to be the modem with its quirks and crashes.

There are many stories about many problems, sometimes along with workarounds and fixes, spread all over the forum and often difficult to find.

I would therefore like to ask you:

Which modem problems did you have, that -- now comes the important part of the question -- you could solve or minimise and how did you do it?

[dukla2000]

To answer your question - I haven't resolved any issues with my modem mainly because I haven't really had any!

My main problemette with the modem is (currently) it drops the data connection every couple of hours. On my home network it usually recovers pretty quickly (seconds) - when I am roaming it can be much more painful (5 minutes) and/or need a reboot. As I am usually on my home network it is very much an observation rather than a show stopper.

For completeness I flashed to 01.002 way back

Code:

journalctl -b | grep EG25GGBR
Dec 09 21:27:50 mobian eg25manager[509]: Response: [EG25GGBR07A08M2G_01.002.01.002\r\n\r\nOK]

and

Code:

uname -a
Linux mobian 5.15-sunxi64 #1 SMP Thu Nov 25 14:39:58 UTC 2021 aarch64 GNU/Linux

[zetabeta]

To answer your question - I haven't resolved any issues with my modem mainly because I haven't really had any!

My main problemette with the modem is (currently) it drops the data connection every couple of hours. On my home network it usually recovers pretty quickly (seconds) - when I am roaming it can be much more painful (5 minutes) and/or need a reboot. As I am usually on my home network it is very much an observation rather than a show stopper.

i found something, it's not total fix though. https://forum.pine64.org/showthread.php?...#pid103530

shortly: edit file "/usr/lib/udev/rules.d/80-modem-eg25.rules" and change ATTR{power/control}="auto" into ATTR{power/control}="on". tested on manjaro arm linux. most likely will have side effects like wasting battery.

[AntonReiser]

If you have problems sending text messages, this might fix it.

[idice]

Anna, i'm trying to change protocol of usb modem (i dont know what does it mean) from QMI to ECM, ECM to work need to remove modemmanager. I removed modemmanager and now modem disappeared at all, i suspect ii is powered off, and there isnt a eg25-manager that power it up, because removing modemmanager, it removed also eg25-manager, so i need to find a way to power up modem