Looking for testers: port for Lenovo Tab M8 HD (TB-8505F)

k.nacke

I made some progress with the port:

waydroid is working now
enabled all kernel configurations for the android container
disabled rescue mode
MTP is working
dtbo.img is now generated

However, I still see some permission issues which needs fixing.

Have fun,
Kai

MrT10001

@k.nacke I have tried with the latest Artifacts. I had to use an earlier version of platform tools (Windows 11) and all seems to go through. However the tablet goes into a bootloop each time.

MrT10001

I have the 2Gb/16Gb version which most likely explains the bootlooping. Oh well, got it in a job lot and was worth trying! I have recovered it to Android, so no loss. I have been informed there is a 3Gb/32Gb version, but I only see 2G/16Gb or 2Gb/32Gb...

k.nacke

@MrT10001 Thanks for trying. I also have the 2GB/16GB model, so that should be fine. I think the 3GB/32GB is the model with lte.
One question for me is which display does your model have? E.g. what does

adb shell cat /sys/bootinfo/hardware_info | grep LCD

show? (That should work under Android, too.) I would like to make sure that it finds the display.

Kai

MrT10001

@k.nacke said in Looking for testers: port for Lenovo Tab M8 HD (TB-8505F):

cat /sys/bootinfo/hardware_info | grep LCD

cat /sys/bootinfo/hardware_info | grep LCD
LCD : ft8201_wxga_vdo_incell_inx

This do?

k.nacke

@MrT10001 Thanks. That was just a shot in the dark, but it's the same display as mine. Need to think what is causing your bootloop.

Btw, the 3Gb/32Gb model is the Tab M8 FHD. I have that tablet, too, but did not yet work on a UT port for it.

Kai

MrT10001

@k.nacke Using Windows 11 and latest version of platform tools. This chucked out an error with fastboot -w. Tried platform tools version r29.0.05 and everything went through fine, but still bootlooped.

k.nacke

@MrT10001 Any chance you could boot into recovery and see if there is a kernel crash message in /proc/last_kmsg or in /sys/fs/pstore?

I also see the fastboot -w message. I am not sure if the message has functional implications. But using an older fastboot version seems not possible, I get an error when I try to flash a partition with older ones.

I discovered the following work around: You download the firmware with the Lenovo RSA tool. When you run fastboot -w in the directory where the files are stored, then the message goes away. I think the command tries to read the image for the userdata partition.

Kai

MrT10001

@k.nacke Logs are empty.

MrT10001

Still no joy, tried it through Linux (Ubuntu 24.04) and still went into a bootloop - as a warning, the bootloop took quite a bit to get out off using the Lenovo Software fix tool. It will do it, but requires patience and timing.