yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Nexus] Tex99:
R: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

The only problem is this (i tried with other kernel and the same rom and it s OK)

It s 0mb for all apps, i don t think it s normal :p

With r 1085 and also with r 1088. I use purity rom. The rest is perfect

Inviato dal mio Galaxy Nexus con Tapatalk 2
[Samsung Galaxy Nexus] mforminio7:
^^ what im talking about
[Samsung Galaxy Nexus] rashidi_zin:
Same here on stock ROM with r1088.
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Well, it is normal. It is due to process "isolation", the app you use to see the data doesn't have the permission to read all the info about other processes. That's a small price to pay for the added security.
[Samsung Galaxy Nexus] renaud:
r1089 has BFQ V6 (not the default scheduler)
[Samsung Galaxy Nexus] rashidi_zin:
1089 seems pretty stable to me.
[Samsung Galaxy Nexus] renaud:
1090 has BFQ enabled by default, it may crash on boot, so please report if it does for you.
[Samsung Galaxy Nexus] cryingrock:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Your kernel is very stable and the battery consumption is quite good:thumbup:

May I ask a question which has probably been asked thousands times before: what is the max gpu freq of this kernel? If same as stock kernel then why not raise it to 512 or at least 384?

Edit: can you add more cpu freq steps between 350 and 1300? Thank you very much:)

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] Tex99:
R: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

GPU si 384

4 hours of screen on. Great i m so happy.

Will not add more CPU freq for the moment

It s possibile to have an other governor like performance ? :thumbup:

Inviato dal mio Galaxy Nexus con Tapatalk 2
[Samsung Galaxy Nexus] cryingrock:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

1090 crashed on boot, for me:(

1089 is good:thumbup:

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Thanks, that means the bug in BFQ is still not corrected or one of the fs can't stand BFQ for some reason. Mine booted fine
[Samsung Galaxy Nexus] lippol94:
My case is a 50-50.

On 1089 with BFQ set on boot I had one freeze and one boot fine.
[Samsung Galaxy Nexus] !crazy:
AW: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

90 booted ok for me too.
[Samsung Galaxy Nexus] rashidi_zin:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Is 1090 being removed from download?
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Yes, I removed it due to issues at boot. Furthermore BFQ seems more prone to lags.
[Samsung Galaxy Nexus] Tex99:
renaud,my best compliments. with 1089 i have not lag,problems crash or other. all run perfectly.

i use 100% of brightness and i made 3h and 40m with screen on. always with wi fi or 3g ;)

i use:

cubic-deadline-350-1200-700-interactive. do you suggest to change some settings into governor ? just to have more performance :) but i repeat it's perfect
[Samsung Galaxy Nexus] rtfpessoa:
What app do you use to manage thoose settings?
[Samsung Galaxy Nexus] Tex99:
trickster mod on playstore
[Samsung Galaxy Nexus] xaueious:
Not sure what was changed in 4.2.2, but kernels built for 4.2.1 don't want to boot.

I tried 1085 and 1092 from http://fugumod.org/galaxy_nexus/stable-4.2/.
[Samsung Galaxy Nexus] renaud:
Yes, the kernel will not boot on 4.2.2 yet, I guess the new PVR drivers are the culprit.
[Samsung Galaxy Nexus] renaud:
r1095 boots on 4.2.2
[Samsung Galaxy Nexus] xaueious:
Wow that was fast!

Back to Fugu I go.

Any idea what they changed yet? Since we don't even have sources yet, I'm guessing they just fudged something in the ramdisk? What's the deal there?

Edit:

1095... Not on your servers yet though. Will check back later. Might as well see what Google did here...

I just dumped my stock 4.2.2 boot.img a bit earlier if anyone needs: http://xdaforums.com/showthread.php?t=2144665
[Samsung Galaxy Nexus] renaud:
It's there but on the bottom. Here is the direct link http://fugumod.org/galaxy_nexus/testing-4.2.2/kernel_FuguMod_20130212_r1095-4.2.zip
[Samsung Galaxy Nexus] xaueious:
Booting for me. And I don't have an 'adb offline' bug that exists with the stock 4.2.2 kernel. Something is borked in their USB driver for sure, at least in combination with my laptop...

Decisions decisions...

Edit:

Are you a magician? How did you know that Google was updating their OMAP driver?

https://github.com/renaudallard/gnexus_kernel/commit/70271d947f8c8fe081c5626da82ff326311a6425

Edit 2:

Found it

I guess you scoured it from http://git.omapzoom.org/?p=kernel/omap.git;a=commit;h=e98d0743d6ae079441a69be80224f9f096a4a7b0

And Google built this kernel 1 day from this commit... Google's people are really quick as well... Hopefully this fixes the freeze I had...

Edit 3:

There might be some sort of new whitelist feature for ADB that Fugumod 4.2.2 testing doesn't support yet, see here

http://xdaforums.com/showpost.php?p=37893808&postcount=3
[Samsung Galaxy Nexus] xaueious:
Confirmed that Fugu1095 breaks ADB RSA authentication for Android 4.2.2 on Windows (other operating systems untested). ADB authentication notification dialog never comes up on Windows, but ADB works immediately without whitelist. Minor security flaw.
[Samsung Galaxy Nexus] renaud:
I will need the new sources to make that work, but don't consider the feature as secure, if your phone is not encrypted, anyone can boot in recovery and use adb...

Security is: encrypt your phone, change the passphrase with encpasschanger to put a secure one at boot, disable adb.
[Samsung Galaxy Nexus] xaueious:
Agreed. It's a nice new feature anyway...

I guess driver has to recognize adb auth packet before going online?
[Samsung Galaxy Nexus] rcll:
This kernel looks really great! Is there any chance to build this also for Nexus 4?
[Samsung Galaxy Nexus] ak:
Thanks a lot you are the first and unique super developer of xda! :)
[Samsung Galaxy Nexus] renaud:
I generally don't develop for devices I don't have
[Samsung Galaxy Nexus] renaud:
LOL :angel:
[Samsung Galaxy Nexus] Savant:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Im glad you don't since it is safer and more secure all around.

It is true since you've been doing this for awhile now and know what you're doing.
[Samsung Galaxy Nexus] albsat:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Does the latest kernel work for both 4.2 and 4.2.2?
[Samsung Galaxy Nexus] renaud:
r1095 will only work on 4.2.2

r1093 is the latest iteration of 4.1 and 4.2.1/4.2.0 I make because the source changed in non backward compatible way. The only difference between r1093 and r1095 is the 4.2.2 compatibility.
[Samsung Galaxy Nexus] ak:
donate

I have make 2° donation to you Renaud:

7YM62419UR687034R

Thanks a lot
[Samsung Galaxy Nexus] renaud:
Grazie mille
[Samsung Galaxy Nexus] manager77:
r139=works great,no issues
[Samsung Galaxy Nexus] Gregus59:
+ 1...no problem... ;)
[Samsung Galaxy Nexus] pedmond:
So in R139 there are only two governors? And I can't find the voltage settings anymore in my Apex ROM. Is that from kernel as well?
[Samsung Galaxy Nexus] renaud:
There has never been any voltage control in my kernel, I rely on smartreflex to set the voltage correctly, which is IMHO the way to go.

There are indeed only 2 governors, one for better battery life when you really need it and one for normal use, did you need any other? Ondemand gives choppy results on the GN. If you need any other governor I can add it back, just tell me.

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] pedmond:
Thank you for your answer. No, actually those two are all I need. I just wanted to make sure nothing went wrong with my installation. As for the voltage control, I must have seen it while using Franco's kernel, a while ago.

In my opinion, this is the best and most stable kernel for ICS :)
[Samsung Galaxy Nexus] awia:
nikademus, can you add the color control system like the franco´s kernel and glados???

they have 2 settings, RGB multipliers and v1-gamma! like the voodoo color, but without an app...

I think it´s basic for an amoled screen

thanks for your amazing job
[Samsung Galaxy Nexus] renaud:
I use the same color system as CM9. If you flash CM9 you will have color controls. If you don't you can still control it via the /sys filesystem, although I must admit it's less easy.

I try to keep this kernel CM9 compatible as this is what most users run or will run.
[Samsung Galaxy Nexus] renaud:
r140 and r141 have reworked frequencies

r140: 1260-1000-800-400

r141: 1300-1000-800-400

Feel free to report
[Samsung Galaxy Nexus] pedmond:
Lol - I already installed 2 versions today. Time for a third one methinks...
[Samsung Galaxy Nexus] renaud:
Thanks for testing.

This kernel is very open and dynamic, I don't hide changes like many others.
[Samsung Galaxy Nexus] pedmond:
141 looks great and snappy. I believe (based on Franco's thread) that you can safely push the max frequency to 1350.
[Samsung Galaxy Nexus] renaud:
My goal is not to go the highest possible, it's trivial to add code to push the CPU to 2ghz (although a fridge may be needed), but it's definitely not my goal. I mainly want something stable and secure.

Increasing lower frequencies is more an attempt at getting better battery life, which I admit may be counter intuitive.

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] slyydrr:
I've been preaching your kernel to others since the r30 days back when you were still developing for 4.0.2/3 side by side. I'm glad to see others are starting to realize how stable/reliable this kernel is.

Also FYI, swapping back to cfq has made the difference in battery life for me. Perhaps a bit early to tell, but it was likely the culprit in the battery drop I experienced so thanks again for your earlier advice.

Did you end up grabbing that OMAP board? If so, has it helped as much as you had hoped?
[Samsung Galaxy Nexus] franciscofranco:
What do you mean with increasing lower frequencies?
[Samsung Galaxy Nexus] pedmond:
I guess it's the same as with your kernel: using as min frequency something greater than 350, like 400 here, or even 700 as many people recommend in your thread.
[Samsung Galaxy Nexus] renaud:
Lower frequencies 350-700-920 have become 400-800-1000 without changing the voltage.

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] pedmond:
OS Monitor reports the CPU spending quite a bit of time in a 200 MHz state, although the min frequency should be 400. Any idea why that happens?
[Samsung Galaxy Nexus] zurchpet:
CPU Spy shows me only the appropriate MHzs are used.

1300, 1000, 800, 400 and Deep Sleep
[Samsung Galaxy Nexus] pedmond:
That is correct. OS Monitor though, seems to measure a 200 MHz state as well. If that is true, then it would have a negative impact on the battery.
[Samsung Galaxy Nexus] renaud:
I am wondering how frequencies are linked with the hardware, bus speed and all. I should probably read a little bit more on how the hardware is implemented.

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] Savant:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Can't wait for more of your kernel goodness.
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Me too, lol

Does anyone think deadline is better than CFQ?
[Samsung Galaxy Nexus] Tex99:
R: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

I always use deadline :) system appears more quick

Inviato dal mio Galaxy Nexus con Tapatalk 2
[Samsung Galaxy Nexus] ak:
Deadline win .... :good:
[Samsung Galaxy Nexus] Savant:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Deadline is overall better for me.
[Samsung Galaxy Nexus] renaud:
r1100 is using a newer (linaro) gcc toolchain
[Samsung Galaxy Nexus] a4840639:
I'm really glad that this kernel is secure(so I can use apps with root detection)

but it seems to be preventing Kindle from launching

hope there would be a fix
[Samsung Galaxy Nexus] renaud:
You will need to send me at least dmesg and logcat after it failed, so I can check why it fails. Please use pastebin or attachments, do not paste directly in the forum.

Also note that the problem is probably in the app itself though.
[Samsung Galaxy Nexus] !crazy:
Renaud,

what is your opinion on the target_loads interactive parameter? Your default values are not quite good, that is at least according to 0smosis and others who tested different values for interactive. If target loads is set higher then hi speed_frequency, the governor will supposedly continuously switch between hi sped and target_loads. When hi speed is reached at say 50 governor than targets the target_load so instead of maybe increasing the frequency it will actually decrease it in order to achieve higher load.

For me personally the best option would be to remove the thing.

---------- Post added at 07:39 PM ---------- Previous post was at 07:27 PM ----------

To correct my self, I was talking about go hispeed freq, and not about hispeed_freq value, which is not determined by percentage of load but with frequency.

And I am sorry for my bad English :)
[Samsung Galaxy Nexus] renaud:
It is normal for a governor (except performance) to try to lower the frequency on some circumstances, this is why they have been created in the first place. Maybe you could elaborate a little bit more on why this is worse on interactive?
[Samsung Galaxy Nexus] !crazy:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Under some circumstances sure, but I at least don't want interactive to target some target load of 90%. Compare that behavior with stock interactive governor.

Further Franco and others always set target load lower than the go high speed value. That's why I mentioned all that in the first place. I think most of us who use interactive want it to be more performance oriented, at least I do. It will still scale down when not under load and save more power then performance. IIRC the GN stock value from Google for go high speed is around 50 % and it has no target_loads parameter. Of course if you are satisfied with that and how it works, you will keep it. I have just tried to draw your attention to this, for the case you didn't bother with/tested targeg_loads.
[Samsung Galaxy Nexus] renaud:
r1101 has linux 3.0.64 and a merge from latest google omap sources
[Samsung Galaxy Nexus] Icecoldmeat:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Still 4.2.1?

Edit: Nvm, already saw that it is the 4.2.2 one. BTW, latest exp 4.2.1 kernel is working flawless!

Can you maybe add the ''row'' scheduler?
[Samsung Galaxy Nexus] renaud:
From now on, all kernels are 4.2.2 only.
[Samsung Galaxy Nexus] renaud:
Take care as it seems some custom ROMs claim to be 4.2.2 but still use "old" 4.2.1 drivers, so they are not compatible with real 4.2.2 kernels.
[Samsung Galaxy Nexus] Icecoldmeat:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Yeah, already noticed that..
[Samsung Galaxy Nexus] renaud:
r1102 has linux 3.0.65
[Samsung Galaxy Nexus] xaueious:
There's a patch that forces the new kernel to boot on older ROMs actually, I never tested this and don't know if this is actually bad for the device:

http://rootzwiki.com/topic/13092-ke...1613/page__st__14910__p__1103763#entry1103763

Patch here:

https://github.com/imoseyon/leanKernel-galaxy-nexus/commit/0d0332e6abcf394e6a709c9d6cf48f3a541dd1bb
[Samsung Galaxy Nexus] JediDru:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Best kernel ever! 1102 with interactive and bfq stock clocks on wifi while I slept dropped 2% in 6 hours. Great work as always.
[Samsung Galaxy Nexus] xaueious:
Device reboot with kernel crash resulting on Version 1101 Feb 15 10:31, stock 4.2.2 otherwise

last_kmsg: http://pastebin.ca/2315431

Related to netfilter?

I was just using the Speedtest app. Maybe this causes the kernel to crash: https://play.google.com/store/apps/details?id=org.zwanoo.android.speedtest&hl=en

On the 1101 kernel, I took the kmsg. I see a lot of instances of this when I start the app. The app actual speed test does not work:

qtaguid: ctrl_counterset(s 1 10022): insufficient priv from pid=438 tgid=385 uid=1000

This is followed by (not sure if related):

<6>[ 123.874267] binder: 386:386 transaction failed 29189, size 168-0

qtaguid corresponds to the socket tagging functionality. Maybe something was patched in from netfilter xt_qtaguid that results in breakage?

http://source.android.com/tech/datausage/kernel-overview.html

Not sure if this was crashing before, but a patch was just merged from Google on the 7th. Not sure what's up... Might just be a memory leak in the app itself?
[Samsung Galaxy Nexus] goTouch:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Can't get root access on cm10.1 after installed this kernel. Strange!

Enviado do meu Galaxy Nexus
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Use supersu instead of superuser
[Samsung Galaxy Nexus] rashidi_zin:
Oh? Does it really matter?
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

It seems something is preventing superuser from working. But I got no dmesg or logcat, so it's hard to tell the problem.
[Samsung Galaxy Nexus] vakaviti:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

1102 is super smooth on carbon 1.1 amazing battery life for my device as well so glad I tried this kernel!! Nice work dev!!! Keep it up
[Samsung Galaxy Nexus] renaud:
Well, you kmesg is from r1095

I assume you launched speedtest multiple times. This app seems to create a massive Out Of Memory, probably because it tries to request a huge amount of RAM to store its buffers.

[ 4052.806274] send sigkill to 14722 (a.UpdateService), adj 1000, size 5707
[ 4052.816375] send sigkill to 14753 (ek.smartinputv5), adj 1000, size 5529
[ 4052.822082] send sigkill to 14789 (roid.downloader), adj 764, size 6382
[ 4052.837280] send sigkill to 14807 (.zolmo.twentymm), adj 764, size 6102
[ 4053.003753] send sigkill to 14863 (droid.gallery3d), adj 647, size 6775

Then the kernel crashed due to this

[ 4054.640777] Unable to handle kernel NULL pointer dereference at virtual address 00000038

from Process AsyncTask #2 (pid: 14900, stack limit = 0xc31ac2f8)

But it's quite hard to tell who called it and what it was doing.
[Samsung Galaxy Nexus] renaud:
Yes, kernel and userland drivers are verifying if version is exactly the same, to ensure the API is correct. It shouldn't be dangerous to more or less disable the check like Imoseyon did, but I think it should not be done because you could have surprises at some point with people booting a completely unrelated version.

And, if you want 4.2.2, just use 4.2.2, drivers have been changed for a reason :D
[Samsung Galaxy Nexus] ak:
I think the same ... thanks renaud. :good:
[Samsung Galaxy Nexus] xaueious:
Yep I was loading Speedtest multiple times.

Sorry about that. I must have been running 1095 instead. I'll try 1101 in a bit.

Speedtest on the stock kernel has a completely quiet kernel log. It doesn't complain about something in qtaguid at all, and no binder transaction

Edit:

For 1101

Same log spam with qtaguid in ctrl_counterset, followed by binder transaction failed. I haven't been able to replicate the kernel crash though, so the crash might be have been something else we can't track at the moment.

Anyways will continue to monitor this. Thanks renaud for taking the time to reply.
[Samsung Galaxy Nexus] !crazy:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

You said you were using that app? That is new to me, because Speedtest app never worked with Fugumod kernel. I was trying to use it multiple times before, and it simply wouldn't start. Now it starts, but it crashes the kernel..?
[Samsung Galaxy Nexus] renaud:
indeed, I tried multiple times just right now and it crashes directly
[Samsung Galaxy Nexus] xaueious:
I don't remember if I ever ran Speedtest on Fugumod. I did update to 4.2.2 recently so I was running stock.

The kernel crash may have had nothing to do with Speedtest. It might just be a coincidence. I'll get over it.
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Is anyone using "force GPU rendering"?
[Samsung Galaxy Nexus] lippol94:
R: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

I do. It seems to grant better performance on "old gingerbread apps"

At least that was my experience on some apps like whatsapp before it got updated.

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] cryingrock:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

When using "force GPU rendering", whatsapp is less laggy, but butter disappears:(

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] !crazy:
AW: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

I am using that too, and I started using Google it for a while.

Never noticed any problem with it, only that some apps behave, actually render smoother, and are not so sluggish.

The only app I can remember now was Rom Toolbox. Was because it doesn't require that option any more. On the other hand, Any.Do didn't work well with force gpu rendering. I am not using that app any more, but IIRC that changed too.

Gesendet von meinem Galaxy Nexus mit Tapatalk 2
[Samsung Galaxy Nexus] renaud:
r1105 has linux 3.0.66
[Samsung Galaxy Nexus] renaud:
Would you prefer getting the 3.4 wifi drivers or the 3.0 ones?

advantages of 3.4 wifi driver: faster, better link quality

disadvantages: WEP and tethering not working
[Samsung Galaxy Nexus] JediDru:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

I have no preference. I am certain I do not use WEP. I may be mistaken but don't the 3.4 drivers effect tethering as well?
[Samsung Galaxy Nexus] !crazy:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Indeed they affect tethering, that's why he mentioned it after WEP :).
[Samsung Galaxy Nexus] rashidi_zin:
I choose to 3.0 as I often tether.
[Samsung Galaxy Nexus] JediDru:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Whoa! I'm blind time for bed...
[Samsung Galaxy Nexus] albsat:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Maybe if there were two versions depending on drivers version...
[Samsung Galaxy Nexus] DanielSanchez:
3.4 :)

P.S: I hate the fact that i can't use this kernel with cm. It work brilliantly with slim. In cm it seems i always lose root.
[Samsung Galaxy Nexus] renaud:
Use supersu instead of superuser, but I guess CM will soon implement the superuser from koush
[Samsung Galaxy Nexus] dirtyreturn:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

On cm10.1 the LATEST as of today breaks root with supersu.
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

Do you have kmsg and log cat?
[Samsung Galaxy Nexus] dirtyreturn:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

I'm sorry. Since you had asked that MUST be something helpful. At least- cm10.1 kernel I had root with supersu reinstalled fugumod updater / got the latest kernel release flashed that and lost root. Flashed another kernel and root is back. Do you want me to reflash the kernel? Would those logs from an app on the phone work for debugging? Edit- or logs from comp. /phone connection?

Edit- ok, oh well hope you get it fixed.
[Samsung Galaxy Nexus] renaud:
Re: [KERNEL][GPL][JB] FuguMod kernel (open, stable, reliable and secure)

From how you express it is not clear if you were running supersu or superuser. Supersu is from chainfire and is not stock on cm, so you have to install it yourself afterwards.