Got stuck in a bootloop after flashing.. Can't get passed Google screen
Sent from my Nexus 7 using XDA Free mobile app
Sent from my Nexus 7 using XDA Free mobile app
[ZEN-KERNEL] 3.10-zen21 "Cheap and Easy" (May 20)
- Thread starter bbedward
- Start date
What kernel app should be used with this kernel? Thanks
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
---------- Post added at 11:35 PM ---------- Previous post was at 11:10 PM ----------
Kernel is operating exceptional except I have no WiFi calling Tmobile. I'm on 3.10 recovery zip. Thanks to those who may help.
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
---------- Post added at 11:55 PM ---------- Previous post was at 11:35 PM ----------
What kernel app should I use or is others using with this kernel?
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
---------- Post added 03-07-2015 at 12:34 AM ---------- Previous post was 02-07-2015 at 11:55 PM ----------
Flashed 22/test zip and no WiFi calling. Tmobile user. M bootloader. Posts say this fixed WiFi calling. Is there anything else I need to know
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
---------- Post added at 11:35 PM ---------- Previous post was at 11:10 PM ----------
Kernel is operating exceptional except I have no WiFi calling Tmobile. I'm on 3.10 recovery zip. Thanks to those who may help.
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
---------- Post added at 11:55 PM ---------- Previous post was at 11:35 PM ----------
What kernel app should I use or is others using with this kernel?
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
---------- Post added 03-07-2015 at 12:34 AM ---------- Previous post was 02-07-2015 at 11:55 PM ----------
Flashed 22/test zip and no WiFi calling. Tmobile user. M bootloader. Posts say this fixed WiFi calling. Is there anything else I need to know
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
Flashed stock Tmobile boot.img for Android m then wiped cache and dalvik then flashed this kernel and WiFi calling worked immediately. Also the performance and battery life of this kernel is excellent. It works excellent with my phone. One must find a kernel that works well with their device and that takes some trial and error. This is the best for my phone out of my searching. Thanks
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
Sent from my Nexus 6 using Xparent Blue Tapatalk 2
Attachments
To say I have been incredibly busy is an understatement.
However, I've finally received some incredible offers to start my career as a software engineer.
In celebration of the whole process finally coming to an end I will be finalizing and working on the reboot of zen kernel :highfive:
However, I've finally received some incredible offers to start my career as a software engineer.
In celebration of the whole process finally coming to an end I will be finalizing and working on the reboot of zen kernel :highfive:
Thank you everybody 
By Wednesday or so I'll say who I accepted it with, I have a couple things still going on tomorrow barring me from the decision.
By Wednesday or so I'll say who I accepted it with, I have a couple things still going on tomorrow barring me from the decision.
G
GuestD0701
Guest
Tmobile android m boot.img? Isn't there only one android m boot.img?
Sent from my Nexus 6 using Tapatalk
wrongway213
Recognized Dev & Contributor / Retired Forum Mod
Awesome, congratulations. It's great to hear someone like you who likes to tinker with things on the more bleeding edge side of programming (custom kernel with a whole different CPU scheduler, anyone?) is finding such acceptance into the mainstream end of it - anytime I see a dev from the custom ROM/kernel scene get that "legit push" I am happy to see it. From all I have observed watching your willingness and genuine enjoyment in teaching others how to develop better projects more efficiently, whoever you went with will be lucky to have ya man.
So I recently had to stop running this kernel (but will be the first inline ready to try the next version). It hasent been playing nice with latest Chroma for me. Anyone know the stock animation settings? Feels so much slower than stock with Zen lol.
I accepted a full time, permanent java developer position at the Sherwin Williams headquarters in Cleveland.
I start next Monday and am pretty excited
I start next Monday and am pretty excited
Last edited:
I accepted a full time, permanent java developer position at the Sherwin Williams headquarters in Cleveland.
I start next Monday and am pretty excited
Wohooooo . congratulations sir.
Best of luck to youI accepted a full time, permanent java developer position at the Sherwin Williams headquarters in Cleveland.
I start next Monday and am pretty excited
wrongway213
Recognized Dev & Contributor / Retired Forum Mod
I accepted a full time, permanent java developer position at the Sherwin Williams headquarters in Cleveland.
I start next Monday and am pretty excited
Congratulations! I certainly hope this doesn't mean we'll be seeing TOO much less of you as you are a huge asset to both the XDA community and more specifically to the developer community here, but if it does that would be more than understandable, obviously . Also, as a local, I understand that this position is quite the opportunity- you definitely had some competition. I feel the need to say an extra word of congratulations for that, as I am sure those unfamiliar with said headquarters would likely not understand just how big of a break this really is for a developer. Anyway, I appreciate all you've contributed to this device and I'm very glad to see you achieve the recognition (and pay!) you deserve for your skills. :good:
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84Pushbullet: https://www.pushbullet.com/channel?tag=zen
But you say I'm just a friend
Project Background
First of all. I like the nexus 6. Actually, I really really like the nexus 6. I think the device from factory performs quite marvelously, especially since the 5.1 update. Because of this, I am actually pretty content with running the stock kernel. "But BB...What about INTelligentSuperBOOSTXX5MillionPOINT5MegaBlast?!?!?!? Can you add this!?". While I appreciate all the great and free work that several great individuals do for the community. I personally don't see the need to alter any of these MSM/Board drivers a whole lot - not on these latest generation of devices. Things run pretty well I think.
"Why don't you just run the stock kernel then you sick low-life waste of space?"
Because, I still think improvements can be made.
I think there's a lot of good intentions out there to make improvements in the kernel-space, BUT:
I've observed a variety of things that were prevalent a couple of years ago and that are still prevalent today. (1) A lot of small things are changed - and advertised as a huge improvement, (2) some tunables are adjusted and advertised as a huge change/improvement but end up being a regression because they were never tested, or (3) some code is merged that causes regressions and it turns out that self-inflicted bugs are being chased around.
Zen is an attempt at improving the stock kernel. That's it.
Project Summary
The Zen kernel has always been oriented at improving the experience fordesktopmobile users as much as possible. This iteration of the series is no different. The goal is simple: Improve the experience.
BFS CPU Scheduler
BFS is an alternative CPU scheduler to the stock kernel's CFS. BFS features a simple single-runqueue O earliest virtual deadline first design. There is no need for excessive balancing to achieve fariness on multiple runqueues - fairness is ensured by deadlines.
BFS is tweaked towards human perception. It is not a real-time scheduler (like the SCHED_DEADLINE policy/scheduling in 3.14+) nor does it use runtimes+red/black trees to figure out fairness. It uses deadlines with the 6ms rr_interval based on the fact that humans cannot detect jitters until >= 7ms.
Anyway, not going to get into it much but you may find more information in post 2, or throughout this thread (I explained a bit more details about it around page 4).
Also, check these out:
BFS FAQ
BFS Wikia
Android/MSM 3.10 BFS Port
What is different about this and the 3.10-ck1 bfs v440 patch available on ck.kolivas.org
- Backport fixes and features (not SMT NICE) from up to bfs v460ish
- Some of Alfred Chen's upstream synchronization and refactoring of BFS methods (linux-3.18/19-gc branch)
- My own syncing with mainline as well as backporting
- Suspend/Wake issues that were killer on bfs v440 for 3.10 are not present in this port - these issues have been resolved.
- You should NEVER report any issue related to this kernel upstream. Not android, linux, or BFS related. Do not report any issues anywhere but here.
This kernel is all about interactivity by default.
The default rr_interval is set to 6. The logic is the human eye cannot detect jitter until about 7ms. Try lowering it if you want to increase interactivity. Try increasing it to achieve higher thoroughput.
-------------------------
Zen/Shamu Features
- BFS CPU Scheduler
- @flar2 Wake Gestures
- @savoca KCAL Screen Color Control
- @imoseyon Vibration SysFS interface
- USB Fastcharge Support
- Fsync SysFS Interface
- Overclocking support
- Flar2 userspace CPU voltage control
- f2fs support and latest f2fs: f2fs/dev (even with ZenyKernel zip)
- FIOPS + BFQ + SIO in addition to the stock ROW, CFQ, Deadline, No-op I/O schedulers
- Several misc. CAF/msm + upstream updates/fixes.
- Forced encryption disabled. (Even With ZenyKernel zip)
- Added init.d support (ZenyKernel is up to your existing ROM/kernel)
- selinux adjustments for viper4android and other things (ZenyKernel is up to your existing ROM/kernel)
- Compatible with most ROMs, use ZenyKernel zip if there's compatibility issues.
- Added zRam support
- MPDecision disabled by default, replaced by touchboost listener + ZenDecision 2.0
- ZenyKernel based on @osm0sis AnyKernel2 to use for roms who break compatibility with stock ramdisk
I work based on real results from user experience, not numbers. I don't claim anything as a big deal if it isn't one. Zen is a no-nonsense, well-tested kernel making real improvements to interactivity in the kernel space.
---------
Releases
All of these builds are for android 5.1 and above, unless otherwise noted
Wipe /cache before flashing for best results
Versions
- Recovery Zip: Kernel+Ramdisk: Use this on a stock/stock-like rom, or on a rom without support for things like viper4android or init.d support. Flash in recovery.
- Boot.IMG: Kernel+Ramdisk: Same as recovery zip, except in the raw boot.img form. Can be flashed in fastboot, flashify, etc.
- ZenyKernel Zip: Kernel Only (+ no force encryption +f2fs support +zen settings): Will use the exact same ramdisk you already have. If you have issues with the other full versions, then dirty flash your rom and this on top of it.
3.10-zen21 "Cheap and Easy"
Changes:
- Compile with GCC 5.1
- Several bcmdhd/wifi driver updates
- Misc. CAF updates
- Fix come cores sticking to performance governor
3.10-zen21 Recovery Zip Download
3.10-zen21 boot.img (install via fastboot/twrp IMG) Download
3.10-zen21 ZenyKernel Zip (Use on top of ROM dirty flash if issues with the above two)
Legacy Releases
ZenDecision (zen20+)
You can still turn on MPDecision without any ill effects if desired
As of 5.1+ MPDecision is somehow responsible for at least the following:
- Raise MIN_FREQ to 1497MHz for 3 seconds on touch events
- Ensure CPUs come online after certain events, like thermal events (due to low battery for example)
ZenDecision is a simple "handler" for to keep CPUs online by the following logic:
- When screen comes on, make sure all CPUs are online if current battery level is above bat_threshold_ignore
ZenDecision tunables (/sys/kernel/zen_decision/):
- enabled (0=disabled, 1=enabled): Enable/Disable the driver from doing any work
- wake_wait_time (0-60000 ms, 1000 by default): How long to wait to execute CPU_UP work after screen comes online.
- bat_threshold_ignore(1-100, 0=disabled, 15 by default): The battery percentage to ignore CPU_UP operations. If current battery level is below this level, then the driver is essentially disabled.
How to enable overclocking (zen6+)
If your device is unstable at the overclocked frequencies, it is a hardware limitation with your device. Do not report it as a bug
To enable overclocking on zen6 or newer, you will need to use the recovery zip/aroma below.
You choose the max frequency you want, it pulls the boot.img from the device, adds a boot parameter specifying the OC frequency.
If you are not on zen6 or newer it will have no affect.
This does not install a kernel, you still have to install the kernel from one of the links above
Zen Overclock Enable v2
3.09GHz step only supported on zen20+
Thanks guys, and enjoy. Feedback is always appreciated.
XDA:DevDB Information
Zen Kernel, Kernel for the Nexus 6
Contributors
bbedward, purian23
Source Code: https://github.com/bbedward/ZenKernel_Shamu/
Kernel Special Features: Android/MSM BFS Port, kcal, gestures, cool stuff
Version Information
Status: Stable
Current Stable Version: 21
Stable Release Date: 2015-05-20
Created 2015-03-24
Last Updated 2015-05-2030To say I have been incredibly busy is an understatement.
However, I've finally received some incredible offers to start my career as a software engineer.
In celebration of the whole process finally coming to an end I will be finalizing and working on the reboot of zen kernel :highfive:29Hey guys,
I just wanted to toss this out there an say i'm proud of @bbedward! Today, he Graduates from the University of Toledo with his Software Engineering Degree (Computer Science & Engineering) with a Bright Future! He already has options at Oracle and GE as soon as he steps foot back in his hometown of Cleveland!
I honestly feel like his big brother with all the BS'n we've done over the past few years. He's taught me a lot (even though the punk is younger lol) and I'm pretty sure I've given him so good life morals to go by haha. Join me in Congratulating @bbedward for not only his awesome kernels and tons of XDA Community involvement/help through the years, but for generally being a cool dude. We'll surely look forward to what he has in store next for the tech community.
Thanks dude and Congrats
Purian2322@purian23's original name for the last release is applicable for zen15.
3.10-zen15 "Unbroken"
Changes:
- All the great changes of zen14 except without the BFS LLC cpumask selection - was an issue causer
- Updated kcal (I forgot to merge into 14)
3.10-zen15 Recovery Zip Download
3.10-zen15 boot.img (install via fastboot/twrp IMG) Download
3.10-zen15 AnyKernel Zip (Use for CM 12.1 or other roms that change ramdisk/sepolicy things)
