yashsingh1/xdaforums huggingface dataset:
[Nexus 9 Original Android Development] Ae3NerdGod:
so my recovery isnt booting. ive tried all your images.

heres dmesg from bootloop. the teamwin page keeps flashing like its trying to boot.

i ran adb shell dmesg>dmesg.txt

heres a pastebin

<7>
<7>CPU: 0 PID: 163 Comm: recovery Tainted: G W 3.10.40[FIRE-ICE-RECOVERY]R4+ #4
<7>task: ffffffc06573c000 ti: ffffffc0676dc000 task.ti: ffffffc0676dc000
<7>pc : [<0000007f79e8fb08>] lr : [<0000007f79e8a8c0>] pstate: 60000000
<7>sp : 0000007fe42b7930
<7>x29: 0000007fe42b7930 x28: 000000555b5790f0
<7>x27: 0000000000000000 x26: 0000007fe42b7bd0
<7>x25: 0000007fe42b7bd8 x24: 0000007fe42b7c40
<7>x23: 0000007f79e89268 x22: 00000000ffffffd0
<7>x21: 0000007fe42b7a48 x20: 85c50d986bf2877f
<7>x19: 0000007f79ea9000 x18: 0000000000000000
<7>x17: 0000007f79e8fadc x16: 0000007f79ea9d98
<7>x15: 0000000000000010 x14: 0000000000000001
<7>x13: 0000007fe42b727c x12: 0000000000000001
<7>x11: 0000000000000001 x10: 0000000000000077
<7>x9 : 0000007f79e95e78 x8 : 0000000000000039
<7>x7 : 0000007fe42b717a x6 : 0000007fe42b7960
<7>x5 : 0000007f7cb883a0 x4 : 0000007f7cb096c4
<7>x3 : 0000007f7cb4a690 x2 : 0000007fe42b7970
<7>x1 : 00000000c0387411 x0 : 85c50d986bf2877f
<7>
<3>EXT4-fs (mmcblk0p31): VFS: Can't find ext4 filesystem
<3>EXT4-fs (mmcblk0p31): VFS: Can't find ext4 filesystem
<3>EXT4-fs (mmcblk0p31): VFS: Can't find ext4 filesystem
<3>EXT4-fs (mmcblk0p31): VFS: Can't find ext4 filesystem
<6>recovery[165]: unhandled input address range fault (11) at 0xc50d986bf2877f, esr 0x92000004
<1>pgd = ffffffc065012000
<1>[c50d986bf2877f] *pgd=0000000000000000
<7>

hope this helps, can run other stuff from ADB if needed.
[Nexus 9 Original Android Development] USBhost:
Awesome ty

I hope this can help me
[Nexus 9 Original Android Development] USBhost:
Edit: i think i found the problem

Can some one help me test it?
[Nexus 9 Original Android Development] bruce2662:
When i am using test 3 K5, i found that there's a "decryption unsuccessful" problem when i reboot after flashing the kernel.

any clue?
[Nexus 9 Original Android Development] Ae3NerdGod:
ill test it.

---------- Post added at 09:46 PM ---------- Previous post was at 09:38 PM ----------

btw, im running stock rom, stock kernel.

and lately im just using "fastboot boot <recovery>.img" to test it. but ive tried with fire-ice installed and actually writing them to the recovery partition. just tell me what environment to test it in and i have no problem setting it up.

and it says encrypted in security
[Nexus 9 Original Android Development] USBhost:
https://s.basketbuild.com/filedl/devs?dev=USBhost&dl=USBhost/Nexus 9/recovery/test1.R5.img

awesome ty

just do

fastboot boot <recovery>.img

Edit: did it boot?
[Nexus 9 Original Android Development] Ae3NerdGod:
that one didnt even get to the team win screen, boots to android like normal.

ill try flashing.

---------- Post added at 10:08 PM ---------- Previous post was at 10:05 PM ----------

flashing produces same result even from selecting recovery at bootloader

almost seems like its just the kernel. wrong init or something?
[Nexus 9 Original Android Development] USBhost:
it boots for me lol

this is hard!!!

<3>F2FS-fs (mmcblk0p31): recovery did not fully complete
<6>F2FS-fs (mmcblk0p31): mounted filesystem
<6>F2FS-fs (mmcblk0p31): mounting..
<6>htc_battery_bq2419x htc_battery_bq2419x.9: Battery charging state changed (0 -> 1)
<3>F2FS-fs (mmcblk0p31): recovery did not fully complete
<6>F2FS-fs (mmcblk0p31): mounted filesystem
<6>F2FS-fs (mmcblk0p31): mounting..
<3>F2FS-fs (mmcblk0p31): recovery did not fully complete
<6>F2FS-fs (mmcblk0p31): mounted filesystem
<6>F2FS-fs (mmcblk0p30): mounting..
<3>F2FS-fs (mmcblk0p30): recovery did not fully complete
<6>F2FS-fs (mmcblk0p30): mounted filesystem
<6>EXT4-fs (mmcblk0p24): mounted filesystem with ordered data mode. Opts:
<6>EXT4-fs (mmcblk0p29): mounted filesystem with ordered data mode. Opts:
<3>android_usb: already disabled

it mounted

edit: trying stock twrp recovery

<14>[ 5.756487] healthd: battery l=95 v=4246 t=29.8 h=2 st=2 c=-541 chg=u
<6>[ 5.989311] F2FS-fs (mmcblk0p31): mounting..
<6>[ 6.381707] htc_battery_bq2419x htc_battery_bq2419x.9: Battery charging state changed (0 -> 1)
<3>[ 6.639081] F2FS-fs (mmcblk0p31): recovery did not fully complete
<6>[ 6.639847] F2FS-fs (mmcblk0p31): mounted filesystem
<7>[ 6.639969] SELinux: initialized (dev mmcblk0p31, type f2fs), uses xattr
<6>[ 6.725475] F2FS-fs (mmcblk0p31): mounting..
<3>[ 7.356397] F2FS-fs (mmcblk0p31): recovery did not fully complete
<6>[ 7.356802] F2FS-fs (mmcblk0p31): mounted filesystem
<7>[ 7.356913] SELinux: initialized (dev mmcblk0p31, type f2fs), uses xattr
<6>[ 7.443137] F2FS-fs (mmcblk0p31): mounting..
<3>[ 8.064890] F2FS-fs (mmcblk0p31): recovery did not fully complete
<6>[ 8.065181] F2FS-fs (mmcblk0p31): mounted filesystem
<7>[ 8.065288] SELinux: initialized (dev mmcblk0p31, type f2fs), uses xattr
<6>[ 8.165513] F2FS-fs (mmcblk0p30): mounting..
<3>[ 8.543876] F2FS-fs (mmcblk0p30): recovery did not fully complete
<6>[ 8.544143] F2FS-fs (mmcblk0p30): mounted filesystem
<7>[ 8.544245] SELinux: initialized (dev mmcblk0p30, type f2fs), uses xattr
<6>[ 8.545543] SELinux: Context test is not valid (left unmapped).

i get the same as my kernel but with selinux
[Nexus 9 Original Android Development] USBhost:
[MENTION=5839251]Ae3NerdGod[/MENTION]

do you have a 16gb nexus 9?
[Nexus 9 Original Android Development] Vinzie:
Also tested, got to the teamwin screen, but thats it. The screen flashes to black for a moment and shows the teamwin screen again. This keeps on repeating. Used flashify to flash recovery, and came from latest twrp.
[Nexus 9 Original Android Development] USBhost:
Its so hard to debug when it does not bloody happen to me lol

Hmm i wonder if twrp uses debuging for something

Thats why it wont work for you Hmm??
[Nexus 9 Original Android Development] Vinzie:
Euh... Could I try using debugging for twrp? How can I provide more info so you can look into this..?
[Nexus 9 Original Android Development] USBhost:
No problem I really only need testers

because me testing it does no good lol

Is your nexus 9:

16gb or a 32gb

encrypted or decrypted

None lte or lte

Im trying to find out what kind of people are getting the problem

and whos not.

After that i will build stock kernel

And if everything is working fine i will move on from there
[Nexus 9 Original Android Development] Vinzie:
32 gb, non-lte, encrypted (although using your kernel k5)
[Nexus 9 Original Android Development] USBhost:
Ok ty

So its an encryption problem so ok that should help

Lets get this stubborn recovery fixed lol

Will work on this tomorrow

12:20 am here lol
[Nexus 9 Original Android Development] Ae3NerdGod:
yes i do. brand new. non-lte. and ill test anything by the way :)

also i heard rumors of a second hardware revision, could that be the issue? what do i 'cat'?

---------- Post added at 03:44 AM ---------- Previous post was at 03:39 AM ----------

its 3:42am here but i cant sleep. ill try decrypting my tablet and get back.
[Nexus 9 Original Android Development] Vinzie:
Last time I tried to get my nexus un-encrypted, but recovery 4 didn't boot and after doing a factory reset with r3 I got an error saying the data was corrupt and I should do a factory reset. So I went with the stock twrp to get k5 to boot and got encrypted.

Hope you get it fixed soon, but also make sure you get enough sleep
[Nexus 9 Original Android Development] blakeslee14:
Just flashed your kernel. So far so good :)
[Nexus 9 Original Android Development] USBhost:
ok guys test.2.R5 is be up soon

lets see if this boots for you lol

Edit: https://s.basketbuild.com/devs/USBhost/Nexus 9/recovery/bata

ok guys tell me how it goes :)
[Nexus 9 Original Android Development] Vinzie:
Woohoo, twrp seems to work now, at doesn't get stuck at the splashscreen anymore. Great job :good:
[Nexus 9 Original Android Development] USBhost:
awesome

cheers!!!
[Nexus 9 Original Android Development] Vinzie:
Any chance you will include fast charging into your kernel, this device could really use it..:)
[Nexus 9 Original Android Development] USBhost:
Huh? read the op

Its included and enabled by default
[Nexus 9 Original Android Development] Vinzie:
Euh.. Right.. Missed that one :D Even with fastcharging it takes a long time to charge...
[Nexus 9 Original Android Development] USBhost:
You do know you need a 2A charger right
[Nexus 9 Original Android Development] Vinzie:
Jup... But I guess any charger with more A then the original charger will make a difference? Using the one I got with my old ipad... That should make a difference right?
[Nexus 9 Original Android Development] USBhost:
I would think so

Well the best way to chack is to do

kmsg in terminal

Then plug it in and see what happends
[Nexus 9 Original Android Development] bamboosensei:
Vinzie are you using the AICP nightly builds?? They have been taking years for me to charge as well so I've just flashed over the latest test kernel and need to see how fast charge is when I run down the battery
[Nexus 9 Original Android Development] Vinzie:
No using stock google with the fire ice test kernel at the moment. Waiting for 5.0.3 before going to other rom, because of the factory reset that is needed. Dont't want to lose all setting and all progress of all my apps every day...
[Nexus 9 Original Android Development] maxtcee:
Can this be used with lollipolooza 22c?
[Nexus 9 Original Android Development] USBhost:
You bet you can

Im using that ROM
[Nexus 9 Original Android Development] USBhost:
The one in AICP is the stock kernel

built by me with no changes except to selinux

Also if you flashed the test kernel then it wont work for you

because cache is not f2fs

you can manually format cache to f2fs then it should boot

Also if you get a black screen just do a reboot

and you should be fine
[Nexus 9 Original Android Development] maxtcee:
Does it matter if im using a 2.4 amp charger?
[Nexus 9 Original Android Development] USBhost:
Nop

but if you want i can make a special build for you with 2.4 changing?
[Nexus 9 Original Android Development] maxtcee:
Sure as long as it wouldnt do any harm
[Nexus 9 Original Android Development] USBhost:
Now that I don't know

It would be 900ma more then stock
[Nexus 9 Original Android Development] SwoRNLeaDejZ:
How to you format cache back to ext4 to switch kernels?
[Nexus 9 Original Android Development] USBhost:
In Recovery

go to wipe

advanced wipe

Select cache

Go to repair or change file system

go to change file systems

then select what you want
[Nexus 9 Original Android Development] USBhost:
OK guys get rdy for test.4.K5
[Nexus 9 Original Android Development] EverythingPortable:
Whaaaaaaat?!?!?! That's crazy! Nice work!
[Nexus 9 Original Android Development] USBhost:
test.4.K5 is up

zram added

and other stuff i dont remember
[Nexus 9 Original Android Development] USBhost:
Haha I can officially say

I broke the highest multi-core score record

according to Geekbench 3 website

As of today
[Nexus 9 Original Android Development] vogemic:
LTE support added?
[Nexus 9 Original Android Development] USBhost:
Will do soon

most likely on test.5.K5
[Nexus 9 Original Android Development] beerente:
Flashing K5

Hi,

I have Lollipopalooza and want to flash this performant kernel.

Been reading the different threads, and please confirm these are the correct steps:

1) Flash FIRE_ICE[K4].zip in TWRP (to get /cache to f2fs)

2) Reboot to Bootloader

3) Fastboot flash boot test.4.K5.img

4) Fastboot erase cache

5) Fastboot reboot

Thanks.

Edwin
[Nexus 9 Original Android Development] USBhost:
no need for 4

Other then at everything looks good
[Nexus 9 Original Android Development] ericplatham:
Just giving my experience here....

I have been flashing multiple kernals to see what is best for me. I tried flashing K5 but I stayed in a boot loop until I booted into twrp and changed cache to f2fs. I was going from Faux and K5 though; so I don't know if that was what caused the boot loop.
[Nexus 9 Original Android Development] Rjporter:
Backlight command

[MENTION=5501864]USBhost[/MENTION] did you removed the BL command on the latest K5 kernel?
[Nexus 9 Original Android Development] USBhost:
Hmm

So after you formatted cache

It still did not boot?

No its still there

But its only in the zip of the stable

So flash the stable

Then flash the bata

Then your awesome!!
[Nexus 9 Original Android Development] ericplatham:
It booted just fine after I formatted cache.
[Nexus 9 Original Android Development] USBhost:
O OK
[Nexus 9 Original Android Development] Rjporter:
Thanks I got it working now.
[Nexus 9 Original Android Development] cor_mann:
USBhost,

I've just got to say that K4 test 5 is the best kernel yet. My N9 still spends a lot of time in critical memory, but I notice significantly less refreshing of running apps, especially Chrome. I also haven't seen the background refresh once.
[Nexus 9 Original Android Development] ericplatham:
I just wanted to say that you can go straight to the bata version, but you have to format the cache first (especially if coming from a different custom kernal). I could have said it like that in the first place... but I was bored at work and wanted to pretend that I was typing something important. :D
[Nexus 9 Original Android Development] USBhost:
Theres only so much 2gb can do lol

especially since there is a memory leak on Android 5.0.1

O lol ok i was wondering
[Nexus 9 Original Android Development] LanderN:
I hope this memory leak gets fixed soon! When I feel like my tablet is being slow, I reboot, BOOM, fast like always! Hope we get an OTA with 5.0.3 soon...
[Nexus 9 Original Android Development] USBhost:
Same there
[Nexus 9 Original Android Development] cor_mann:
Well....you've done a great job compensating for the memory leak.

I have a feeling that this device will be a while different animal once the leak is fixed.
[Nexus 9 Original Android Development] USBhost:
test.5.K5 is up

Note: for only this one flash in recovery

Note: can any one with a LTE nexus 9 test if test.5 works for you?

I just want to make sure be for I start adding stuff for LTE

SIO added

fixed PSTOR / ramoops :: from last version

changes to init.c :: removed old aka not needed last_kmsg

add add async

fixes to tegra_udc.h thanks [MENTION=4684315]flar2[/MENTION]

fixes to BL

updated UL
[Nexus 9 Original Android Development] MotoFlasher:
THX

MEGA THANK YOU for your work and effort! :highfive:

And congratulations to RC! :highfive: You've deserve it!
[Nexus 9 Original Android Development] USBhost:
Thanks man! :o :cool:
[Nexus 9 Original Android Development] ericplatham:
Yes.... Congrats for becoming RC. Keep up the hard work.
[Nexus 9 Original Android Development] tyvar1:
Congratulations for the RC title! You deserve it! :D
[Nexus 9 Original Android Development] xtcdk:
Any plans of adding fauxsound

Dirty Unicorns /Uber / Beanstalk Yuga adm.
[Nexus 9 Original Android Development] USBhost:
You bet

Note: will add it when he adds it
[Nexus 9 Original Android Development] USBhost:
yep i do now

a fix will be up soon

Edit: test.6.K5 is up

and that problem is fixed

Note: test.6.K5 was only a change to the ramdisk
[Nexus 9 Original Android Development] phillysmako:
Should I flash the nodded recovery before flashing this kernel??
[Nexus 9 Original Android Development] USBhost:
Only if you want to
[Nexus 9 Original Android Development] Rjporter:
What's your recommended values on ZRAM swappiness?
[Nexus 9 Original Android Development] USBhost:
30
[Nexus 9 Original Android Development] frankt2012:
Do we still need to run the cpu gov fix script and oc scripts on the k5 test builds? Thank you.

-Frank
[Nexus 9 Original Android Development] frankt2012:
Thank you.
[Nexus 9 Original Android Development] ilatimer1:
Just flashed the Test6 K5 image and I noticed that the CPU clock (when I go into Settings/Performance) is always running at 1530 MHz?
[Nexus 9 Original Android Development] USBhost:
Huh ok

I never got that lol

But I do know what caused it

fix will be up soon
[Nexus 9 Original Android Development] ilatimer1:
Thanks! So just out of curiosity what causes it?
[Nexus 9 Original Android Development] USBhost:
Well I had the kernel boot with CPU gov performance

And then the system made it go interactive

But in your case it did not but o well

test.7.K5.zip is up

BL and UL is in the ramdisk now

Plus and your fix

flash this one

Edit: Hmm

It looks like I broke

BL and UL !!!!

O come on it was working just fine
[Nexus 9 Original Android Development] upNsmokeAllDay:
Test 7 bumped me over the 60k antutu threshold.
[Nexus 9 Original Android Development] Vinzie:
So should we not flash test 7 then ????
[Nexus 9 Original Android Development] LanderN:
Can I ask what BL and UL do? I can't really tell from the OP...
[Nexus 9 Original Android Development] xtcdk:
39000 here

Dirty Unicorns /Uber / Beanstalk Yuga adm.
[Nexus 9 Original Android Development] USBhost:
Well just CD to /sbin

Then do ./BL or UL

That's a quick fix

BL controls the black light

UL unlocks the black light so the system

Can change it
[Nexus 9 Original Android Development] LanderN:
Okay, so it controls the brightness!

What's the point of controlling the brightness via command instead of the brightness slider? I'm curious :P
[Nexus 9 Original Android Development] USBhost:
So you can go lower than the default 10
[Nexus 9 Original Android Development] LanderN:
Well that makes a lot of sense now! Thanks!
[Nexus 9 Original Android Development] Rjporter:
I didn't used the zip file, I just extracted the img file, to flash test 7 so that BL and UL will not be deleted.?

---------- Post added at 01:48 AM ---------- Previous post was at 01:45 AM ----------

Try to make a shortcut command icon so you can dim your LCD with just a tap on your home screen. Anyways, BL is useful for me while using my tab in the dark.
[Nexus 9 Original Android Development] ericplatham:
Flashed test 7 and got above 60k on AnTuTu myself. My device is also encrypted.
[Nexus 9 Original Android Development] xtcdk:
On what rom . stock ??

Dirty Unicorns /Uber / Beanstalk Yuga adm.
[Nexus 9 Original Android Development] ericplatham:
Correct, I am stock rom
[Nexus 9 Original Android Development] Vinzie:
Me too :D But I did overclock both cpu and gpu as described in the OP.
[Nexus 9 Original Android Development] ericplatham:
I just got around to the overclock and I got to 61051
[Nexus 9 Original Android Development] Vinzie:
Well I did do some moddig. I added some aluminum foil on top of the copper 'heatsink' and battery, using some thermal past. Perhaps this causes the CPU/GPU to throttle less an make me get a little higher score..... Or perhaps my device was a little cooler when I started the benchmark. Anyhow, I doubt you will notice the benchmark difference when using the device for gaming/browsing etc.
[MENTION=5501864]USBhost[/MENTION]: Thanks (again) for making our Nexus 9 the device Google should have made !!!:D:good::laugh:
[Nexus 9 Original Android Development] LanderN:
Hi USBHost!

I think I found a little bug, today, using your latest kernel, I was suddenly unable to get my nexus 9 to go out of it's stand by mode.

I pressed the power button multiple times, double tapped the screen, and it did nothing... So I had to turn off the device by long-pressing power and rebooting.

Apart from this, I found no issues with this kernel, it is fluid, performance is great, benchmarks go higher than ever! I have to reboot every now and then to prevent my device from having really bad performance, but that's probably Google's fault with the memory leak!

I hope you can fix the issue (I assume it's the kernel, I'm running latest stock ROM) and keep developing for our Nexus 9!

Cheers!

Edit: forgot to mention it was charging at the time (2A charger)
[Nexus 9 Original Android Development] USBhost:
I do get that to but rarely

Also I got this bug from the beginning

of time lol

Also I did notice I got more SOD when the cpuquiet

gov was other then userspace
[Nexus 9 Original Android Development] Logix:
i just got it today on liquidsmooth ill try and get a log of it doing it if u need it
[Nexus 9 Original Android Development] USBhost:
Yes please
[Nexus 9 Original Android Development] LanderN:
Where can I find the log required to help you with this problem? Do I have to enable logging somewhere?
[Nexus 9 Original Android Development] USBhost:
cat /sys/fs/pstore/console-ramoops
[Nexus 9 Original Android Development] LanderN:
So when I encounter it, I reboot and send you the file? Or do I have to get it from ADB before I reboot? Or while it is SoD'ing if possible?
[Nexus 9 Original Android Development] USBhost:
Reboot and send me the file
[Nexus 9 Original Android Development] USBhost:
There will be an update today or tomorrow

I went though the drivers

And disabled some stuff that was not needed

Like USB 3 support
[Nexus 9 Original Android Development] madsquabbles:
love the k5! with this kernel the tablet actually charges while using instead of continuously drain. my 30 min of use yesterday browsing with chrome only drained 4%. can't wait to give it a larger sample time.

i haven't had any bugs so far. and using the stock rom still.

update: one thing i've noticed that i didn't get on K4 is that at 80% capacity it's not switching to trickle charge and still going full speed. until i do a few more charges i can't say whether it's related to this kernel or just a fluke on my last charge. i also don't know if this will affect battery longevity or pose any other dangers like overheating. the temp maxed out at 33.5C and i only charged it for an hour. pretty dang fast for 70% to 100% though!
[Nexus 9 Original Android Development] USBhost:
test.8.K5.zip is up

Note: flash

fixed BL

fixed UL

mabe fixed SOD

changes to the RamDisk

and disabled a bunch of useless drivers
[Nexus 9 Original Android Development] madsquabbles:
your kernel has sealed the deal on me keeping this tablet. thanks a bunch! do you have a donate/tips link?
[Nexus 9 Original Android Development] USBhost:
enjoy your nexus 9

And I don't need any donations your thanks is nough :laugh:
[Nexus 9 Original Android Development] xtcdk:
It seems like the min CPU freq always locks at 1530 , dosnt go below

Dirty Unicorns /Uber / Beanstalk Yuga adm.
[Nexus 9 Original Android Development] USBhost:
Does that happen on other Kernels?

Because I have been having trouble on custom ROMs with the cpu

on stock all is fine

Simple fix set the cpu to proformance then back to interactive
[Nexus 9 Original Android Development] xtcdk:
Yeps . also the fix im useing . and yes. Its on a custom rom , just reporting back . keep up the good work ?

Dirty Unicorns /Uber / Beanstalk Yuga adm.
[Nexus 9 Original Android Development] Logix:
and lte? or is that on k6 release?
[Nexus 9 Original Android Development] madsquabbles:
do you know of any way to make a setting lower than 10 as the new default 0 and allow auto brightness? this tweak is one of my favorites, especially at night!
[Nexus 9 Original Android Development] USBhost:
If everything is good on test 8 then test 9 will have it

now that I don't know
[Nexus 9 Original Android Development] Logix:
U can use a app called twilight to do that er wrong quote but to lower the brightness more than stock
[Nexus 9 Original Android Development] madsquabbles:
i use lux and set it at -58%, but it just an overlay. usb's BL setting actually dims the screen lower. i just need to find an easy way to do it with maybe quick terminal or tasker.
[Nexus 9 Original Android Development] nmalready:
I have noticed this happens to me also, but only when I lower the min frequency below 510. I'm on WiFi N9 AICP ROM test kernel 7. I'm installing test 8 now.
[Nexus 9 Original Android Development] USBhost:
I only get this on custom ROMs that I have tested

But not in stock
[Nexus 9 Original Android Development] USBhost:
This is funny

I just broke my own Multi-Core Score record of geekbench 3
[Nexus 9 Original Android Development] nmalready:
Not a big deal, do you think there's much battery saving lowering below 510?

Kernel is super smooth btw
[Nexus 9 Original Android Development] USBhost:
Well yes and no

Yes you will save power but not by much
[Nexus 9 Original Android Development] tyvar1:
Thanks for the update!

Any ROM you recommend? :)