[ROM][OFFICIAL] LineageOS 14.1 for Nexus 9 (flounder)

[dorkshoei]

@dorkshoei How old is your device at this stage, your battery is probably degraded and needs replacing.

Booted into TWRP. It showed 95% charge. I left it that way for 3 hours and at the end it showed 90%.

Also, at this claimed charge it won't boot unless you hold power button down for 30 seconds which isn't normal.

I suppose the battery could be bad but it smells like a hardware issue of another kind to me.

 

[corkiejp]

I edited my previous message, but does your device act like showing here: -

https://www.reddit.com/r/Nexus9/comments/9u7w2i/is_my_n9_possesed_by_the_devil/

 

[dorkshoei]

I edited my previous message, but does your device act like showing here: -

https://www.reddit.com/r/Nexus9/comments/9u7w2i/is_my_n9_possesed_by_the_devil/

No.
a) artifacts were much less blocky, more like small groups of flickering lines
b) covered more like 5/10% of screen
c) flickering hasn't reoccured today, it happened fairly reliably for first hour yesterday after it stopped working, which is when I was able to get as far into the reinstall as recovering apps from Google backup; today no flickering but after reinstall it never gets past initial boot.

TWRP shows cpu temp as 28 degrees C. It'll sit running TWRP for ever, can switch between menus etc.

Is there any form of lower level reinstall I can do via ADB?

---------- Post added at 10:36 PM ---------- Previous post was at 10:31 PM ----------

I saw this in that thread you referenced:

"I was able to fix mine by completely draining it (by keeping it on the recovery screen and bootloader until it won't turn on anymore) and fully charging it a couple of times."

I'll try it. I'm not into spending any $$$ on the tablet at this point as it crashes all the time normally.

 

[corkiejp]

Not that I'm aware of for custom roms you need twrp.

You could try flashing the last official factory image with fastboot.

Problem is fresh install of rom can take time to boot. (15+ mins)

If it is the battery that is faulty, try disconnecting the internal cable and reconnecting.
Also keep the device powered while trying initial boot. (from powerbank).
That will usually resolve the device not getting proper power from degraded battery.
Also setup as a new device and not have it recovering apps so that doesn't prolong the setup.

Edit: - $20 for a battery + cheap pry tool + DIY job does not equal $$$?

 

[dorkshoei]

Edit: - $20 for a battery + cheap pry tool + DIY job does not equal $$$?

The N9 sucks in general. Mine locks up 1/2x a day. I know this isn't the norm for many but it is for me. So it's on life-support AFAIAC. Given that a new battery is a WAG I'd rather invest the $20 towards a replacement tablet.

---------- Post added at 11:42 PM ---------- Previous post was at 11:26 PM ----------

Previously I'd been plugged into PC usb port.

Just wiped everything. Copied zips. Disconnected from PC. Plugged into high power wall charger. Confirmed battery was charging using %age displayed in TWRP. Flashed zips. Rebooted. Screen displayed "Google" then there was briefly screen garbage/artifacts and then it shut down.

I held power button down for 30 seconds, it rebooted and install started. I picked start new, it brought wifi up and I entered my account username, then password, it went off "checking for updates" and then shutdown. This was still plugged into high power charger.

Hmmn. I suppose it may be battery. ~shrug~

 

[corkiejp]

Sounds worse than battery, your mobo could also be fried from overheating.

If it still shuts-down while been powered rules out battery problems.

 

[dorkshoei]

Sounds worse than battery, your mobo could also be fried from overheating.

If it still shuts-down while been powered rules out battery problems.

Yes, it does not look good. Fortunately there are tons of great new alternatives to replace it with :laugh:

 

[dorkshoei]

Fortunately there are tons of great new alternatives to replace it with :laugh:

Ordered a Mi Pad 4 plus.

 

[razorloves]

New builds with June security patches. :good:

lineage-14.1-20190615-UNOFFICIAL-flounder.zip

lineage-14.1-20190615-UNOFFICIAL-flounder_lte.zip

These are the changes.
https://review.lineageos.org/q/topic:n-asb-2019-06

 

[!jj!]

Awesome Thank You!

 

[mrk2815]

razorloves, thanks for keeping the nexus 9 LTE on latest security patchs. your buildskeep my nexus9 lte device alive and relivant.

 

[[email protected]]

Thanks again for keeping the Nexus 9 alive and kicking!!

Sent from my Nexus 9 using Tapatalk

 

[Xharos]

New builds with June security patches. :good:

lineage-14.1-20190615-UNOFFICIAL-flounder.zip

lineage-14.1-20190615-UNOFFICIAL-flounder_lte.zip

These are the changes.
https://review.lineageos.org/q/topic:n-asb-2019-06

Hey there!
A change was merged to LineageOS which improves quality of the SBC codec when using Bluetooth audio:
https://habr.com/en/post/456476/
Apparently it was merged only on Lineage 15.1 and 16.0

Any chances your next build could include this patch? Thanks!

 

[razorloves]

A change was merged to LineageOS which improves quality of the SBC codec when using Bluetooth audio:
Any chances your next build could include this patch? Thanks!

i haven't seen any backport of it to nougat, so it's not available.

 

[maximus9793]

New builds with June security patches. :good:

lineage-14.1-20190615-UNOFFICIAL-flounder.zip

lineage-14.1-20190615-UNOFFICIAL-flounder_lte.zip

These are the changes.
https://review.lineageos.org/q/topic:n-asb-2019-06

Hi!
Is it ok to install unofficial zip over the existing official one without wiping system (dirty install)?

 

[razorloves]

Hi!
Is it ok to install unofficial zip over the existing official one without wiping system (dirty install)?

Yes. Use migration zip.
https://forum.xda-developers.com/showpost.php?p=79016159&postcount=733

 

[madbat99]

Hi!
Is it ok to install unofficial zip over the existing official one without wiping system (dirty install)?

Dirty flash is not wiping data by the way. If you wipe system all of your data is still there.
But you should probably use the migration zip provided

 

[lejouri]

trying to get this version installed. nexus9 flounder.

have the latest twrp, I wipe everything and then I install the rom, gapps nano 7.1 and the su version from the first post. everytime I get in a bootloop or google service framework keeps stopping.
may someone has an idea?

 

[corkiejp]

trying to get this version installed. nexus9 flounder.

have the latest twrp, I wipe everything and then I install the rom, gapps nano 7.1 and the su version from the first post. everytime I get in a bootloop or google service framework keeps stopping.
may someone has an idea?

Try Beans Gapps Mini, I think it was the recommend version for this rom, it is so long since I did a clean install, I can not remember if it still is?

https://forum.xda-developers.com/android/software/gapps-dynamic-gapps-t3487192

 

[subterfugium]

Could you remove ro.debuggable=1 and ro.secure=0 at default.prop (I did not find a way to edit this file even with root)?
Streaming apps are using rootbeer by scottyab at github to detect root ...