Start twrp userspace fastbootd

[Yannik]

• I am running an official build of TWRP, downloaded from https://twrp.me/Devices/
• I am running the latest version of TWRP
• I have read the FAQ (https://twrp.me/FAQ/)
• I have searched for my issue and it does not already exist

Device codename: enchilada
TWRP version: 3.5.2_9-0

WHAT STEPS WILL REPRODUCE THE PROBLEM?

Since fastboot has moved to userspace, which has also been implemented in twrp least year, I wanted to use the userspace fastboot, since my vendor fastboot does not support certain options.

I have tried several methods to achieve this:

adb reboot fastboot from LOS18.1

This boots to twrp, but does not start fastboot.
I have checked /tmp/recovery.log and found the following messages related to fastboot:

....
I:Loading page decrypt_users
I:Loading page changeTwrpFolder
I:Switching packages (TWRP)
Boot command: boot-recovery
Got arguments from boot message
Startup Commands:  '--fastboot'
ro.boottime.adbd=3054913539
ro.boottime.init=1900
....

This does indicate that the fastboot option is being passed, but for some reason not processed correctly within twrp.

adb reboot fastboot while running twrp

This reboots to system.

twrp reboot fastboot from the twrp shell

This reboots to system.

From the twrp GUI

I have tried finding an option to reboot into userspace fastboot from the twrp gui, but the only available reboot options are system, power off, recovery, bootloader, edl.

[Yannik]

@bigbiff @CaptainThrowback @Dees-Troy Could you possible have a look at this?