The AOSP keyboard crashes at boot, you can mute it and install the Google keyboard from an apk here. Edit: I've now added the Google Keyboard to the recommended default build of 20170112 here. In later builds you won't be able to login to the Play Store... So Install the 20170112 build login to the Google Play store and then you can dirty flash to the latest build and run it without issues. Try it out and post about your results. Big thanks to Invisiblek for his continued HP TouchPad support.
Update: A new build is available here by jshafer817. This build fixes the previously mentioned problems and can be clean installed.
HP Touchpad | LineageOS 14.1 Android 7.1.2 Nougat Builds(Video)
Rom details @ 0:51
Enable root access @ 1:33
How to fix AOSP keyboard crash @ 2:19
LineageOS 14.1 overview @ 3:27
3C Battery @3:36
Antutu Benchmark @ 3:58
LineageOS 11 builds by Milaq @ 4:43
How to Install Lineage 14.1:
Do a full clean install with one of the step by step guides and videos below.
Note: It takes a very longtime to boot the first time...wait for it.
[ROM GUIDE] How to Install Android 7.x.x Nougat builds on the HP TouchPad
(ROM GUIDE) Alternative method to install Android 7.x.x Nougat on Touchpad
How to install Android 8.1.x/7.1.2 Oreo/Nougat on the HP TouchPad
Installing Android: 8.1 Oreo, 7.1 Nougat or 6.0 Marshmallow on HP Touchpad
Download the required files:
ROM: Download LineageOS 14.1 build 20170112
Recovery:Download Flintmans TWRP Recovery 22.214.171.124 (05/09/17)
Gapps:Download Open gapps 7.1 Pico
Note: If you already installed Evervolv 7.1.x you can do a clean install with TWRP 126.96.36.199 recovery.
Note: Flintmans newest TWRP builds cannot be installed with the TPtoolbox, flash them from an older recovery.
Note: Do Not unzip the files
Upgrade the Rom:
Upgrade LineageOS 14.1(20180906) rom here by jshafer817
Upgrade LineageOS 14.1(20171228) rom here by invisiblek
Note: Login to the Google Play store from the 20170112 build before upgrading.
Details about the ROM:
[ROM][UNOFFICIAL][7.1.x] LineageOS 14.1 [3.4 KERNEL](Invisiblek)
Working: Audio, Video, WiFi, Camera, Low standby battery drain (-2mA to -15mA) .
Not Working: Bluetooth(works with some devices other don't pair).
Note: This rom **REQUIRES you to increase the System Partition to 2048MB/2GB Change the size with Jcsullins TPtoolbox after selecting to install android
Note: To root download and flash this addonsu zip here.
Note: You may need to install another keyboard app with an apk (here) if the AOSP one crashes at start.
Note:To enable super user you will first need to make the developer tab visible by going to Settings/About tablet and clicking on "Build number" seven times.
-Now go to the new menu located @ Settings/Developer options and find the "Root access" menu enable it for Apps and/or ADB.
Note:If you can't login to Google Play install this older build here, refer to troubleshooting section below.