my strange problem began with watching a video on Twitter with a Fairphone Open 18.04.1 on a Fairphone 2: suddenly the display froze, and I had to reboot.
This reboot, however, entered a endless boot loop. After the initial logo the Fairphone “startup bubbles” appeared two or three times, then it stuck, and rebooted again.
I searched the forum and tested all recommendations (taking out the cards, checking the slim case and the buttons, finally doing a factory reset), also this and this.
Then, I decided to try a reinstall and flashed the phone, first with Fairphone Open, then with Fairphone OS. In both cases the phone started into the endless boot loop.
After that I even tried Ubuntu Phone - with the same result: new startup logo (so I seemingly had installed Ubuntu successfully), but endless boot loop.
Now the strange part: With almost all hope lost, I tried Lineage OS according to this wiki. This means, I flashed the phone with a TWRP image, copied the Lineage zip to the sd card, and reinstalled using TWRP. And it worked!
So, unintentionally I now have a Lineage 14.1 running on my Fairphone, and I give it a try and test it.
But: I don’t understand what caused the problem, and why I cannot install Fairphone Open OS or Fairphone OS. Any suggestions?
The guide to install LineageOS tells you to wipe partitions in TWRP (“Installing LineageOS from recovery” steps 5 and 6).
That actually helps when something is wrong with an OS installation. Did you do something like that before earlier install tries?
That would indicate a hardware problem I think.
The only thing I could think of otherwise would be tweaking CPU settings to perhaps work around a performance or heat problem … e.g. with Kernel Adiutor or with LineageOS performance profiles.
If you happen to have #fairphoneangels in your vicinity, they could perhaps help by swapping modules to find out whether a module is at fault, even if the expensive core module seems most likely to me.
Some internet searching brings up a lot of hits for this address, either when WiFi is off (but my settings show a valid MAC address when WiFi is off) or developer trouble when fetching the MAC address via the Android API.
Is it still the same after you turn off the phone completely, then turn it on again?
I’m giving up, I suspect broken hardware.
Until anybody else comes up with something, it seems your options are module swapping by #fairphoneangels to identify a broken module, or installing one of Fairphone’s OSes and then #contactsupport .
Nevertheless, thanks for caring.
After two years and seven months my fairphone experience seems to end.
A modular phone doesn’t make sense if you can only replace minor modules like cameras or the display. Repair of the core module costs at least 378.05 EUR according to support. It’s cheaper to buy a new and more recent phone.