[OnePlus 6 Questions & Answers] Schwaus:
Hi guys,

long time ago i've already been a Member to XDA Community. HTC Wildfire was a brand new phone at that time. :D In the mean time i've switched to a Oneplus 2 running Lineage OS 17.1 and two years ago i got a Oneplus 6 running stock ROM till yesterday.

Yesterday i got Lineage OS with Wifi up and running fine with the official guide and official lineage recovery but forgot to flash OpenGapps in the first try. :( Tried flashing it again but got a Qualcomm Crashdump Mode Error after that.

So i went on to reflash the whole phone with clearing storage, system and so on. Flashed again now with OpenGapps and Magisk with reboot to recovery method described in official installation guide, Lineage was booting fine and tried to search for Wifi-Connection but i wasn't able to see any Wifi at all. I finished the setup and tried again in settings but System UI crashes if i try that. Rebooted, cleared Cache and tried again but nothing.

So i went back to full stock 10.3.0 with MSMDownloadTool but it only flashes partition a? Is that correct? :confused:

After a lot of trying different things got back to 10.3.5 on a and b partition with mauronofrios stock fastboot roms from https://xdaforums.com/oneplus-6/how-to/rom-stock-fastboot-roms-oneplus-6-t3796665 (Thank you very much for that! :good: ). I can boot both slots if i switch them in booted twrp without any problem.

On stock everything works fine my wifi detects all available networks and i can connect to them without problems.

What did i do wrong?

Any help would be appreciated.

Thank you!

Schwaus

EDIT:

So i did a little bit more testing:

Installed	lineage-17.1-20200804-nightly-enchilada-signed.zip with corresponding recovery without anything like Gapps or Magisk both like described in official instruction and with TWRP from mauronofrio. I also tried to flash latest official OTA from Oneplus via TWRP before flashing Lineageos. In neither of the tested ways Wifi is working and i cant see any Wifi-MAC-adress under settings. Also tried to switch back to stock before flashing with flash-all-partitions.bat from mauronofrios stock to get the persist partitions replaced too.

Every version of Stock like the MSMDownloadtool 10.3.0 or Stock 10.3.5 from mauronofrio Wifi works perfectly without problems. I also can update via OTA without issues. I just dont know what is happening with my Wifi firmware when flashing LineageOS.

EDIT 2:

Got the problem fixed:

Don't know if i done it right but maybe it helps someone.

In my case it was a combination of problems:

- First the latest Oneplus 6 Lineage releases (20200804 and the withdrawn 20200811) seem to have a bug when installed fresh on a device to cause a bootloop so i used the one from 30/06/2020 and updated with the app afterwards.

- Secondly the copy-partitions.zip script hasn't copied all of the partitions necessary. In mauronofrio's fastboot image there is a image named fw_4u1ea.img. This one got not copied by the script, so i booted twrp-3.4.0-1-enchilada-Q-mauronofrio.img and flashed all of the images (fastboot, persist and critical) to slot b again manually like described in his thread. The flash-all-partitions.bat has not worked either.

Now LineageOS works like a charm and i can see and connect to every wifi.