[Q&A] [KERNEL][GPL][N7]franco.Kernel - r80 - Nexus 7 Q&A, Help & Troubleshooting

Q&A for [KERNEL][GPL][N7]franco.Kernel - r80
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Grouper "fast charge"
dskies said:
Guys..please stop immediately to ask to enable fast-charging on grouper.
1: batteries are replaceable and taking the back off a grouper takes me about 30 seconds (they just clip in)
2: It's not just USB. When on a generic AC charger it's _still_ limited to 500mA
which leads to:
3: If left charging without shutting the thing down, @ 500mA in, it takes upwards of 20 hours to get to fully charged and if playing a game such as minon rush (or using GPS + torque in the car) there's a net _discharge_ which eventually results in a flat battery and the device shutting down.
It's not about "fast charging" the battery. It's about supplying enough current to keep the device running for extended periods without flattening the battery.
Click to expand...
Click to collapse
Click to expand...
Click to collapse

@franciscofranco Is this kernel not compatible with CM11 on nexus 7 (2012) ? I am using FKU and when i click on r80 install it throws a warning that the kernel may not be compatible as i am using cyanogenMod ROM. can you please let me ?
Loved it on OnePlus one and want to install it on nexus 7...

Caf roms only apply to qualcomm chips, the tegra3 is not one.
---------- Post added at 02:43 PM ---------- Previous post was at 02:42 PM ----------
@franciscofranco, can we expect f2fs-all support soon, and perhaps color profiles? Thanks!

Hi bro,
Are U working on Nexus 7 Grouper for FK Lollipop 5.0? We're quite desperate knowing this brand new ROM is not actually supporting external/USB DAC. Being promised by Google to natively support the features, we felt rather disappointed. I suspect there is something wrong with the kernel which is rather old.
Should you have time to play with it please do it, a little challenge for you that will bring joys to us around the globe
Thanks

I'm also hoping for usb DAC support to be fixed in lollipop. I'm about to the point where I need to either get tutoring in the finer points of github+ubuntu or buy the N7 2013, which does seem to have DAC support enabled. Anyone willing to teach? The commits for kitkat were present in kangaroo kernel, and timurs kernel. Not sure about changes for lollipop. Hopefully some genius will figure it out in the not too distant future, please?

Android 5.0.2
Hey,
I just installed the franco.kernel updater but it says 'unsupported device'. I have a n7 2012 with android 5.0.2. Can someone help?

Hi all, there is a possibility to download a stable version for CM 10.0?

Why does Franko Kernel for nexus 7 not have the RAW I/o scheduler?

it work , i tried on my nexus 7 5.1.
it work , i tried on my nexus 7 5.1.

r82 also works here with 5.1.1. No issues observed.

Franco r82 kernel vs optipop doesn't work
Just wanted to ask would it be possible for Franco to fix r82 and simply make it work with optipop? For now r82 is advertised as f2fs support and 5.1.1 yet no chance of flashing it on optipop everytime I do that I get system UI doesn't respond or just black screen after booting up.
I'm talking about nexus 2012
Thanks

Frank doesn't allow overclocks, doesn't believe in fast charge like its the toothfairy or something?
I would strongly reccomend another kernel but there are only so many options left. The 2012 tablet is getting old and no one devs for it really anymore.
I used to use only franks kernels but the guy is abrasive and due to leaving out crucial features I can't ever again reccomend his kernels.
Also while it says f2fs support on the box, its not what comes in the tin. As the above user mentioned it bootloops optipop (only ROM left worth running IMO)

fwayfarer said:
Frank doesn't allow overclocks, doesn't believe in fast charge like its the toothfairy or something?
I would strongly reccomend another kernel but there are only so many options left. The 2012 tablet is getting old and no one devs for it really anymore.
I used to use only franks kernels but the guy is abrasive and due to leaving out crucial features I can't ever again reccomend his kernels.
Also while it says f2fs support on the box, its not what comes in the tin. As the above user mentioned it bootloops optipop (only ROM left worth running IMO)
Click to expand...
Click to collapse
What other f2fs kernel for optipop would you recommend? I'm atm on uber and it's good kernel fast and all no freezing at all but comparing to Franco battery last shorter time not really a big deal plus Franco offer more options to manage kernel than uber for example tcp and I/O

Yeah but you still can't use fast charge and he literally belittled people asking for him at add that and overclocking. I can't even remember what I flashed I would have to go and check the tablet - if I flashed anything at all. F2fs (especially f2fs all) kernels for grouper are sparse, and those that exist don't include everything that people think they "should".

fwayfarer said:
Yeah but you still can't use fast charge and he literally belittled people asking for him at add that and overclocking. I can't even remember what I flashed I would have to go and check the tablet - if I flashed anything at all. F2fs (especially f2fs all) kernels for grouper are sparse, and those that exist don't include everything that people think they "should".
Click to expand...
Click to collapse
Found solution installed m-kernel and got everything I wanted

Franco kernel and cm12.1
Hi this is my first post on the forums
I flashed the version modified for cm12.1 on my nexus 7.
Details
Nexus 7 2012 3g+wifi
rooted
running cm12.1
TWRP recovery
So I flashed it and it took over 8 minutes to boot up.When it finaly booted up i got a message saying I have low memory.I checked my memory and I have 12 gigs and some change available. Also battery is draining even when charging! I know this isnt official or anything just thaught Id post my results.Im gonna carry on using my tab with this kernel for a while to see if I can sort it out.
I got tired of the long boots so I used TWRP to load a backup.Tab is back to normal now.Pity this doesnt work.When I was using Paranoid I had Franco kernel and it was great.

Related

[Q] Nexus 7 + OTG + Charging {ROMs and Kernels} and instructions.

Hi Everyone.
So so far there is this :
http://mehrvarz.github.com/otg-power-nexus7.html
A modded kernel that works with CM10.
What i would love to see in this thread is what other ROMs and Kernels support OTG and CHarging at the same time and maybe even with fixed charging status (im using now CM10 with that mod and all is good and the tablet IS charging even though it does say that it is NOT charging.)
Im a big fan of CM but i'd love to try some other roms as well... maybe a stock rom with modded kernel ...
So again.. what im asking is if anyone knows what other roms and kernels supporting the feature and how to install all that , please post it here.
Thank you !
Bump
ElementalX kernel sometimes works on 2012 Nexus7
I'm interested in OTG as well. I'm a little confused as to whether the ElementalX kernel supports Nexus 7 2012. It seems to work intermittently for me, which is frustrating.

[Q] Custom Kernel and updates

Heya, everybody.
I'd like to know if you guys could recommend a good kernel for undervolting and overclocking the Nexus 7. (I'm only looking into very mild overclocking, I don't want worse battery life)
But here's the main thing: I'm wondering about how you'd best go about updating your tablet after flashing a custom kernel. Will I be able to take OTA updates? Am I forced to flash new ROMs every update?
I'd just like the most simple way of updating my OS while being able to overclock and undervolt my Nexus 7. (OTA updates would be the most simple, right? If possible ofc)
I've got a Nexus 7 32GB. Android 4.2.1, IC 3568A-ME370T, Model ME370T, Build JOP40D
there aren't many kernels so quick search through android/original sections 1st pages you can find information about everything you need. i would suggest m-kernel or omega most stable (on my device) and with features you seek, although OC is kinda pointless IMHO if you are not going to benchmark it and given how scores/real world perfomance show well...it's pointless
i think you can't easily just update rom and keep kernel, but it's not much work, download newer version of the rom flash it, flash kernel, boot and resume... 5mins tops.
berkos said:
there aren't many kernels so quick search through android/original sections 1st pages you can find information about everything you need. i would suggest m-kernel or omega most stable (on my device) and with features you seek
Click to expand...
Click to collapse
Okay, I'll have a look at them. Thanks.
OC is kinda pointless IMHO if you are not going to benchmark it and given how scores/real world perfomance show well...it's pointless
Click to expand...
Click to collapse
Well, even if I'm only getting a 5% increase in performance or battery life I still consider it worth it. It's a rather simple upgrade that will last for years (I plan on taking good care of my device )
i think you can't easily just update rom and keep kernel, but it's not much work, download newer version of the rom flash it, flash kernel, boot and resume... 5mins tops.
Click to expand...
Click to collapse
Wait, so you can update Kernel and ROM separately?
Am I correct in assuming that most ROMs (including stock) come with a Kernel that will replace whatever Kernel I have?
I am using trinity kernel alpha 4 version along with cm 10.1 ROM. Can over clock to 1.7 GHz with this kernel. Downloaded trinity tool box also. You can under clock, over clock and set voltages along with some kernel tweaks. Has worked flawlessly so far. I also downloaded and installed cyan delta app. It will flash the delta file of each nightly you want and also flash kernel all in one shot. (Cyan Delta will only work with CyanogenMod ROMs.)
Sent from my Nexus 7 using Tapatalk HD
kevk60 said:
I am using trinity kernel alpha 4 version along with cm 10.1 ROM. Can over clock to 1.7 GHz with this kernel. Downloaded trinity tool box also. You can under clock, over clock and set voltages along with some kernel tweaks. Has worked flawlessly so far. I also downloaded and installed cyan delta app. It will flash the delta file of each nightly you want and also flash kernel all in one shot. (Cyan Delta will only work with CyanogenMod ROMs.)
Click to expand...
Click to collapse
I found this thread:
http://forum.xda-developers.com/showthread.php?t=1889571
I'll probably use Franco if possible, cuz amazing battery life. I noticed that my Nexus 7 only lasts like 5hours when gaming with it(stock clocks). That's not good enough for me! :S
If it doesn't work I'll probably go for Omega or M-Kernel. (or AOKP stock kernel)
I'll probably go for Paranoid Android 3.0 with the Franco kernel. I've read that they're compatible.
Updating to newer versions might be a bit of a pain, but the cool functions are probably worth it :3
You don't need to update every time a new version of a ROM or Kernel comes out, you know. If it's setup and working perfectly, the best thing to do would be to enjoy your tablet.
OTA updates do a lot of validation checks before they begin; in fact, they perform a checksum on every file targeted for a patch update.
It is quite common (not always, but common) for the kernel or ramdisk to be modified during an OTA update - so this means a high likelihood that an OTA update will not succeed on a device with a custom kernel.
There are lots of ways to do what you want, though; two basic strategies would be:
- From a backup, restore only the (stock) boot partition. Apply the OTA, and then restore a backup of your OC kernel/boot partition.
- Using Titanium Backup (or Carbon), back up your apps & data. Restore a pure stock backup, and take the OTA update on that. Make a Nandroid Backup of this. Flash the replacement kernel & a root kit. Boot and restore your apps. (This method is more labor intensive).
Note the frequent mention of full (nandroid) backups in the above. Backups are a good thing to have; make them early and often.
Anyway, there you go - two methods for the price of zero.
I prefer PA3.0 & Motley Kernel
Searz said:
I found this thread:
http://forum.xda-developers.com/showthread.php?t=1889571
...
I'll probably go for Paranoid Android 3.0 with the Franco kernel. I've read that they're compatible.
Updating to newer versions might be a bit of a pain, but the cool functions are probably worth it :3
Click to expand...
Click to collapse
I use PA3.0 with Motley Kernel and it works like a champ. There are stretches where I get 2-3 days of battery life (but I am paranoid and have everything disabled when I don't use it, and brightness down to ~15%). The link you provided though is a good resource.
--dchriste
Searz said:
I found this thread:
http://forum.xda-developers.com/showthread.php?t=1889571
I'll probably use Franco if possible, cuz amazing battery life. I noticed that my Nexus 7 only lasts like 5hours when gaming with it(stock clocks). That's not good enough for me! :S
If it doesn't work I'll probably go for Omega or M-Kernel. (or AOKP stock kernel)
I'll probably go for Paranoid Android 3.0 with the Franco kernel. I've read that they're compatible.
Updating to newer versions might be a bit of a pain, but the cool functions are probably worth it :3
Click to expand...
Click to collapse
Well don't expect major improvement in battery life while gaming, maybe if you down clock CPU for less demanding games, if you run demanding 3d games like Horn you will drain battery fast. Kernels change from version to version, performance and battery wise, so try different versions from same Dev. When it comes to games the way tegra 3 is designed you will not see much of benefit if any from oc cpu. Just look at the latest m36 kernel, your n7 will basically become dual core device with immeasurable performance loss. All I want to say don't expect wonders. If you are after battery life I would suggest you to look into other less bloated ROMs, like code fire, dirtybox, rasbean jelly. Paranoid is great in some aspects but I found less popular roms are easier on the battery, but not by a large margin.
Sent from my Nexus 7 using xda premium
I would have to agree. You do not have to update your rom with every nightly or your kernel with every version. If your tab is working fine, use it for what you got it for. Sorta like Murphy's law. If it ain't broke, don't fix it. (Read the changelogs)
Sent from my Xoom using Tapatalk HD
ynrozturk said:
You don't need to update every time a new version of a ROM or Kernel comes out, you know. If it's setup and working perfectly, the best thing to do would be to enjoy your tablet.
Click to expand...
Click to collapse
kevk60 said:
I would have to agree. You do not have to update your rom with every nightly or your kernel with every version. If your tab is working fine, use it for what you got it for. Sorta like Murphy's law. If it ain't broke, don't fix it. (Read the changelogs)
Click to expand...
Click to collapse
Yea, I won't be reflashing things unless there's new features that I really want.
dchriste90 said:
I use PA3.0 with Motley Kernel and it works like a champ. There are stretches where I get 2-3 days of battery life (but I am paranoid and have everything disabled when I don't use it, and brightness down to ~15%). The link you provided though is a good resource.
Click to expand...
Click to collapse
Motley is apparently one of the "worst" kernels when it comes to optimization and battery life. The best thing about it is probably the features, but I don't really need any of them, so I probably won't be using that one
bftb0 said:
OTA updates do a lot of validation checks before they begin; in fact, they perform a checksum on every file targeted for a patch update.
It is quite common (not always, but common) for the kernel or ramdisk to be modified during an OTA update - so this means a high likelihood that an OTA update will not succeed on a device with a custom kernel.
Click to expand...
Click to collapse
Yea, that seems to be the case from what I've read. But flashing the stock kernel would make it work fine, right?
bftb0 said:
- From a backup, restore only the (stock) boot partition. Apply the OTA, and then restore a backup of your OC kernel/boot partition.
Click to expand...
Click to collapse
This seems like it has a possibility of going wrong. I think I'll go with the second method.
bftb0 said:
- Using Titanium Backup (or Carbon), back up your apps & data. Restore a pure stock backup, and take the OTA update on that. Make a Nandroid Backup of this. Flash the replacement kernel & a root kit. Boot and restore your apps. (This method is more labor intensive).
Click to expand...
Click to collapse
This method is actually not that "labor intensive". As long as you've got Ti Backup Pro it's very easy to do this, you just gotta wait a while things backup/restore.
berkos said:
Well don't expect major improvement in battery life while gaming, maybe if you down clock CPU for less demanding games, if you run demanding 3d games like Horn you will drain battery fast.
If you are after battery life I would suggest you to look into other less bloated ROMs, like code fire, dirtybox, rasbean jelly. Paranoid is great in some aspects but I found less popular roms are easier on the battery, but not by a large margin.
Click to expand...
Click to collapse
Yea, I realize now that battery life when gaming probably won't change much.
Battery life is very important to me, but if it comes at the expense of features then the difference has to be noticeable.
How has your experience been? (compare the ROMs you've used)

[Q&A] [Kernel][4.4] M-Kernel - a69 [WiFi/3G] [f2fs/ext4] [6/23]

Q&A for [Kernel][4.4] M-Kernel - a69 [WiFi/3G] [f2fs/ext4] [6/23]
Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer. Thanks for understanding and for helping to keep XDA neat and tidy! :smile:
Nexus 7 (2013) flo cannto flash
I have a Nexus 7 V2, rooted, unlocked, etc. been fooling around a bit, and i cannot flash this kernel. is there a specific release i need to be flashing?? i am lost.... no matter how i try to flash it, fastboot or recovery, i still boot up, check settings, and have;
3.4.0-g03485a6
[email protected] #1
(date)
any ideas? i have none.
Vnldwth said:
I have a Nexus 7 V2, rooted, unlocked, etc. been fooling around a bit, and i cannot flash this kernel. is there a specific release i need to be flashing?? i am lost.... no matter how i try to flash it, fastboot or recovery, i still boot up, check settings, and have;
3.4.0-g03485a6
[email protected] #1
(date)
any ideas? i have none.
Click to expand...
Click to collapse
This kernel is for the 2012 Nexus 7 (grouper). The 2013 Nexus 7 (flo) is a different device and has it's own dedicated forum, make sure you are going there to kind a compatible kernel for your device. http://forum.xda-developers.com/nexus-7-2013
Hello running latest purity on f2fs and running m kernel, any suggestion on undervolting the GPU and CPU?
Sent from my nexus 7 using XDA Premium 4 mobile app
Hopefully you will enable the sio scheduler as opposed to excluding it entirely. It may not have extreme read or write speeds, as it's more balanced, but it has the lowest latency due to its tiny overhead.
Great kernel nonetheless, managed 5-7 hours of SoT (7 if in continuous use) after undervolting it, and running it at 1.4ghz. Hopefully the LP build will be even better. It runs super smooth at 1.2ghz, can't wait to be able to undervolt it and get even more SoT, because right now, LP gives me the same SoT as PA 4.6 plus M-Kernel.
With kernel tweaker,stock rom 5.0 and a72 it is all ok
I'm running stock rom with all f2fs and a72, it's run smooth but I must press power button more than once to wake up from sleep...
Touch2wake
Running stock 5.0.2 with f2fs data partition only and loving it. Seems to have the issues fixed that made 5.0 uber-laggy. DEFINITELY recommend updating to any debating it (although this is only day one, so I'll respond again after long term testing). Was wondering tho about Touch2wake. Really liked it when I had kit-kat installed and was wondering if it'd be possible to have it brought back, even as a setting that is off by default but can be turned on via some setting. Thanks for the hard work!
does kernel have a problem with overflow of wakelocks "baseband_xmm_power" ?
m-kernel
i got a question on my nexus 7 3g 2012 5.0.2
i have install the latest m kernel but my device only run one core and the cpu cap at 1500
have anyone have this problm and solution
sorry for my poor english
planing s2w /dt2w?
Will there be s2w (sweep2wake) on Lollipop kernel? Asking for it is my only reason not switching to Lollipop. Power drain is not an issue for me, as i can charge device every night no problem. (I have made Tasker scripts shortcuts (following suggestings there http://forum.xda-developers.com/showthread.php?t=2232732) to easy change wake timeout if i need battery).
Bootloop too.
CM12 + a74 + f2fs(data/cache)
Can I flash a73 on 4.4 all2fs rom via TWRP 2.8.5?
Android 5.1
With the recent update to android 5.1 I understand you have a version running on 5.0, but will a new update be coming out?
@Metoo18
Exactly the same here, CM12 with data and cache F2FS. Flashing a74 causes freeze on Google logo.
Hmm, maybe we have to change also system partition to F2FS? I tried to flash Phantom Kernel r2 for LP but I also got bootloop :/
a69 problem
i can't install a68 and a69 on kitkat but i can install correctly a67; maybe zips are corrupt, qhere i can find an a69 zip correct?
It's most likely the battery connector, it has happened to me not once, but TWICE. Two times I have had to open my Nexus 7 to push the connector into the header (there was only some slight contact).
Recently I have filled the gap and thus the battery connector will never unplug itself.
Gianby3 said:
i can't install a68 and a69 on kitkat but i can install correctly a67; maybe zips are corrupt, qhere i can find an a69 zip correct?
Click to expand...
Click to collapse
try TWRP 2.8.3. Higher does not flash a69 for me.
Loadable modules support
Could someone recompile a74 version with loadable modules support (CONFIG_MODULES=y) ?
I tried compiling it by myself but mine zImage is about 700kb smaller and after flashing i got into bootloop.
bootloop
getting into bootloop after optimizing apps...im on chroma :/

[Q] Nexus 7 on 5.0/Rooted/TWRP - Need to OC

Hi All,
I've managed to get Lollipop running on Nexus 7 (2012) Wi-Fi. I rooted my Nexus using the Toolkit, and have flashed latest TWRP.
Post Lollipop install I have also cleared the Cache ( as recommended) and the tablet does appear a little better in terms of lag.
But, I've read a lot of posts that this Nexus can be Overclocked. I'm not looking at some insane OC but I'm looking for a decent OC that won't kill battery, etc.
So, a few questions:
1. I've read about ElementalX kernel but just want to confirm that I can flash it through TWRP, without issues.
2. What's a good OC that I can aim for (1.6Ghz/2.0Ghz?)? I'm looking for a decent boost in performance without killing battery.
Looking for some advice before I take the plunge.
Edit: Just realised that I've raised this thread in the wrong Nexus 7 area. Could I please request a MOD to move this to the Nexus 7 2012 area?
Anybody?
1. How else would you flash the kernel?
2. Ask in the thread dedicated to the kernel in question?
Running ElementalX at 1728Mhz without issue on 5.0. As suggested, check the kernel thread for any specific questions about it.
mjones73 said:
Running ElementalX at 1728Mhz without issue on 5.0. As suggested, check the kernel thread for any specific questions about it.
Click to expand...
Click to collapse
Hey thanks for getting back. I'm assuming that you're using ElementalX on Nexus 2012 and not 2013?
OP, if you need to move the thread, report the thread's first post and request it to be moved. I think it's already been done this time, we're just awaiting a mod to move it.
Moved to correct board (sorry, holidays are always a bit rough on us staff, but we are getting to it all, we promise!!!)

G900f, All kernels are laggy in games in custom rom MagmaNX 10

Hello, i got a problem in a custom rom, i think it's the kernel, i use now the boeffla kernel, i love this fast charge, 2000A, but if i play a game, and go to the home screen and return back to the game, is it veryyyyy Laggy.
First if i restart the game, got i the complete performance back.
Have any ideas? or any new kernel with fast charge (ac)?
The custom rom is a n7 port
MichaelScOke said:
Hello, i got a problem in a custom rom, i think it's the kernel, i use now the boeffla kernel, i love this fast charge, 2000A, but if i play a game, and go to the home screen and return back to the game, is it veryyyyy Laggy.
First if i restart the game, got i the complete performance back.
Have any ideas? or any new kernel with fast charge (ac)?
The custom rom is a n7 port
Click to expand...
Click to collapse
well the one thing i can sa you are using a kernel that 1-is eol and 2- was not optimized for ported roms , the only port i tested was Skiesrom 3.2 wich was smooth but leaned to much on perf. also i think this might bebthe wrong section to post this question since it only specify the n7 port and for sure Boeffla would most likely no put his time on a kernel from 6.0 since its already EOL , best ask on the n7 port thread for more help
MichaelScOke said:
Hello, i got a problem in a custom rom, i think it's the kernel, i use now the boeffla kernel, i love this fast charge, 2000A, but if i play a game, and go to the home screen and return back to the game, is it veryyyyy Laggy.
First if i restart the game, got i the complete performance back.
Have any ideas? or any new kernel with fast charge (ac)?
The custom rom is a n7 port
Click to expand...
Click to collapse
Hello,
Hmmm ...
With all respect, sooner or later Moderators will remove this post from here as you posted in the wrong forum. Can't agree more with @ KazuDante that you shell post this rather on your custom ROM's thread as Boefla-kernel is NOT compatible with your custom rom.
Quote from Kernel thread OP:
Compatibility
Important: This kernel is only meant to be compatible with official Samsung stock firmware and nothing else.
So when the kernel does not run on custom rom XYZ, do not even bother me with it or ask hundred times in the thread for compatibility.
I could not care less about it !!
Click to expand...
Click to collapse
I have found the kernel of the roms thread, and i try now the standard kernel again.
Not optimized? i try now the skies rom kernel
The skies kernel is too laggy if i leave any app and go back into the.
I make a new thread in n7 ports now

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