yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Nexus] ph4zrd:
Thank you for confirming chips produced 09/2012 as bad. Added this to the post linked above.

This is normal as we don't give the dd command a particular file size to create. So it simply writes data until no space is left.

If you are only using ROMs that support something like init.d inside data (like CM), next time to worry about this will be when you do a full wipe.

Probably then the problem will already be fixed by Google or others as it gains more attention over time. ;)

Jup. Type 'mount' in Terminal or adb after you rebooted your phone:

=> discard option added, script ran successfully

Maybe you have to check something like 'run as root' or similar in Script Manager.

Nope. Stock does not support init.d.

You can use the script without. The phone will speed up over time as more and more data is written/deleted and therefore the eMMC chip gets some discard commands.

The dd + rm just speeds up the process as all free blocks will be told to the eMMC chip due to the discard option added beforehand.

Another possibility (after installing the script and confirming that it works) would be to copy a large file that fills almost all space on the phone and remove it afterwards. The dd command is just considerably faster.

You don't need to care. Just keep around 1,0-1,5 GiB of free space everytime: Benchmark

Well, you might get a replacement phone and through bringing it back the chance that Google gets aware of the problem may be higher.

But possibly they will only wipe all data which makes the phone fast again for some time and tell you there is nothing wrong with it...

You may even think about it from this point of view: If the fix works for you, you have a phone with a blazingly fast eMMC chip, faster than any GNex produced before 08/2012 ;) (until you have less than 1 GiB of free space on /data)

+1
[Samsung Galaxy Nexus] KaiZ51:
Thanks, that cleared a lot of questions. :)

So, after having tested the phone some more time (and I do have discard enabled at boot after all), the phone still seems pretty slow to me.

Yesterday I did the discard command with the adb shell, and then rebooted with the discard script enabled, but it's still pretty slow...

I've also benchmarked the phone in AndroBench a few times after this and Random Write scores ranged from as low as 6 (yes, six) IOPS, to 60's IOPS.

Still, this isn't that good since it seems like normal scores are in the 100's.

I really don't know what I should do now... Maybe the eMMC chip isn't actually the problem? But I find that rather strange since I don't think I have any apps that I already didn't have on my old Nexus S, and the phone does seem slower than my old one.
[Samsung Galaxy Nexus] ph4zrd:
How much free space do you have left on /data or /sdcard?

And you used the dd-rm-combination after remounting with discard, right?
[Samsung Galaxy Nexus] KaiZ51:
I have 1.71GB free now.

And what do you mean about your second question? If you're asking if I used those commands when I connected the phone to my PC via USB Debugging, then yes.

If you're talking about the script that runs at boot, all I have in that script is

#!/system/bin/sh
mount -o remount,discard /data
mount -o remount,discard /cache

Should I put the script like this?

#!/system/bin/sh
mount -o remount,discard /data
mount -o remount,discard /cache
dd if=/dev/zero of=/data/tmp.bin
rm /data/tmp.bin

I didn't put them there since I thought the dd and rm commands were only meant to be run when connected via USB and not at boot as well...
[Samsung Galaxy Nexus] ph4zrd:
The version that you are usind is correct. The dd-rm commands you only have to run once.

Maybe try to free some other gigabytes e.g. by moving files to your computer and then try again with AndroBench.

If the results are better, begin to copy back the files you need most.

If it's not better, you may have other problems as well or the 09/2012 chip is even worse than the 08/2012 one :eek:
[Samsung Galaxy Nexus] KaiZ51:
Thanks. I deleted some music files, and I'm at 2.75GB free right now. And after having deleted the files, the phone feels much faster already, and I've benched it a few times and I ranged from around 85-100 IOPS for Random Write, which is much better than before.

Tomorrow or so I'll try to delete some more files, and see if it gets faster to the normal speeds. Also, seeing as freeing more space did make my phone faster, if I fill the space again with files will the phone get slower again?

If yes, when Google or some dev fixes the problem permanently, will I able to fill up space as much as I want?
[Samsung Galaxy Nexus] ph4zrd:
Maybe it stays fast, at least on an acceptable level, when you put back some of the files, maybe not.

Mine is fine with around 1,0 GiB free space. If it gets lower, the write speed drops drastically.

This chip is really weird ;)

I think if they solve the problem, they will add a conditional discard option or something similar which would result in the same behaviour as we get when adding that mount option on our own.

Well, it might be possible although unlikely that they patch the eMMC firmware...
[Samsung Galaxy Nexus] KaiZ51:
Hmm I see, guess I'll have to try tomorrow by myself and see if it slows down.

Anyway, so if even an official update won't fully fix it (ruling out the eMMC firmware update), then don't we have what should be considered a defective phone?

I mean, if we bought a phone with 16GB of internal storage, and no SD card slot, and we can't fill the space as we want that's what I would call a defective phone/model... I just like to get what I pay for, and all the space I can get is really handy to me. :/
[Samsung Galaxy Nexus] KaiZ51:
I've tested the phone again by removing some files (leaving about 4GB free), and when I ran the bench it gave me normal scores at that point according to other benchmarks done here.

However, by adding back files, it gets slower... This is pretty ridiculous, I've got about 2.75GB and even with so much space free it doesn't give me the normal scores...
[Samsung Galaxy Nexus] Domskibus:
I also have some problems with a slow Galaxy Nexus. I don't have really annoying/hard lags (the animations are more or less smooth) but I have to wait some moments, until the device has opened the program. Additionally texting is a little but of annoying because I type faster that my device can visualize the letters -.-

Some information:

10GB FREE, just about 3,0GB used

eMMC chip VYL00M Date 11/2011

AOKP 4.2.1 Nightly with newest franco kernel

My benchmark score aren't the best, too (screenshot)

Any tips for me?

Thanks in advance!
[Samsung Galaxy Nexus] andrewjt19:
It looks like you have received some good feedback- Hope it works. Somethings I have noticed to def. help me are as follows:

1. Clean install of TWRP (I have had way fewer problems than CWM users, just my opinion) also being on the JB Bootloader of course

2. Wipe Cache/Dalvik/Factory Reset/System wipe

3. Flash desired ROM

4. Flash latest GApps

5. Run stock Kernel and start fresh (in other words let Google Restore your Apps and do NOT restore data)

6. If the battery life is bad, flash a custom kernel like TinyKernel or something.

7. ENJOY! I have seen upwards of 8 hours with JellyBelly and TinyKernel running 4.2
[Samsung Galaxy Nexus] Dsmforlife92:
I just think 4.2.1 isn't as fast as 4.1
[Samsung Galaxy Nexus] L00n:
Type V3U00M

CID 15010056335530304d0df54865158f0d

Revision 0xD

great...just great..

it says sane chip .. but the lag says different.

anyway is there any solution yet?
[Samsung Galaxy Nexus] ph4zrd:
Seems like you have to accept that until Google brings up a better fix or try to bring the phone back for warranty repair :/

Your benchmark scores seem to be somewhat normal (I am getting around 4, yes, four IOPS/4K for RND WR with the bug) and the VYL00M chip was not reported to have the problem discussed here (unitl now).

Maybe some app is misbehaving or something else... Have you tried factory reset?

This seems to be exactly the problem discussed here. Sane chip only means that you dont have the eMMC hard brick bug.

What is important is your chip type, V3U00M. This seems to be the bad one, so please try the solution mentioned here. Good luck.
[Samsung Galaxy Nexus] aschlon4:
Hi..i too unfortunately is one of the poor souls that got stuck with this beautiful device that is the equivalent of a retarded donkey performance wise. what to do ? should i just sell it and dump the problem on another person ?! why in 8 months or more, google/samsung couldn't fix the problem ?! where was the QA team when they tested this device !? why are we being held hostage by these companies ?

i bought my device from abroad and returning it means that i am left without a phone for at least a month. so what are my options ? wait around for the mercy of the big G or sell this piece of **** and get it over with ?
[Samsung Galaxy Nexus] Jar3112:
Have a look here..

http://xdaforums.com/showthread.php?t=2029246

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] aschlon4:
I have seen this thread before. i like my phones to run unchanged and as stock as possible. i believe that the company responsible to selling and supporting their products should be held accountable for their mistakes and fix the damn bug, because i don't want to nor do intend to tinker with the innards of my phone. i just don't want to.
[Samsung Galaxy Nexus] karakalem:
I am in the same condition as you are in right now. I have this ****ty defective phone with me and i bought it from Germany and I can not return it right now. I will probably sell this and buy another second hand Nexus.
[Android Q&A, Help & Troubleshooting] Mrwhitepantz:
First off, I hope this is right place to put this, I'm having a little trouble figuring out how to change my emoticons on my galaxy SIII. I don't want the android emoticons or image emoticons, I'm trying to change the emoticons that show up below (it's a little large). I'm not sure if this is the Samsung keyboard or if it's just a steam app thing, because the little button down below only shows up in steam, but when I press and hold it it sends them as actual text, like : -) instead of :).

Now, I like that it's text, I just don't like that they have dashes for noses, and I was wondering if anyone knows how or even if it can be changed.

Thanks in advance!
[Android Q&A, Help & Troubleshooting] Mrwhitepantz:
No ideas? Anyone?
[General Questions and Answers] Rostomania:
I was wondering what are the bugs now, on the FXP newest release, and did they fix the fmradio ? I was wondering also, when the CM10 or CM10.1 will be released ? Thanks :)​
[Nexus 10 General] Biohazard0289:
My Nexus 10 has light bleed, which seems to be common among the users here at XDA. It also has a "dim patch", and multi-touch doesn't work properly. So i've decided to have the device replaced/repaired.

I contacted Google 2 days ago and explained my situation, they said that the only options they would have would be a remorse return (i'm already out of my 15 day window), or replacement. As many of you know, in order to have a replacement done it is required for Google to place a ~$400 hold on your card associated with your Google Play account then a new device is sent. I don't have a credit card and I cannot have $400 tied up for 2+ weeks, so i'm not able to use that option either. At that time they directed me to Samsung for further assistance with a warranty repair. I don't have an issue sending the device in, so I call Samsung.

A Samsung rep stated that "we just make the thing, we don't provide any service" and directed me back to Google for assistance. I brought up the warranty information included in the box with the unit itself, and he quickly denied any ability to file a repair order for a Nexus tablet.

So I call Google...

The first rep indicated that ASUS is their "go-to" repair partner, and I should have contacted them. He agreed that Samsung made the tablet, as well as confirmed the prior information about the replacement policy. Amused, I called back and requested a Supervisor. The "Floor Supervisor" in that particular call center stated the following: "*sigh* We've been getting this all day long, sorry for any misinformation you were provided. The only option to have the Nexus 10 replaced or repaired under warranty is under our replacement. We will replace your tablet for the warranty period only, provided there is no physical damage to the device from the user. Samsung will not respond to any inquiries about the Nexus 10 tablet, and does not offer any services for warranty repair. Your only option is to replace it with Google. Do you have any further questions?"

I decided to call Samsung again, because I couldn't believe that was the case. Within 5 minutes I had an e-mail with shipping labels to have my device repaired. The agent was a nice guy, and apparently frequents XDA. We had a conversation about the tablet itself and the entire Nexus launch process, talked about specs and whatnot and disconnected the call.

At this point i'm annoyed and offended with the whole Google experience.
[Nexus 10 General] Scared27:
I've had a pretty good experience so far with getting my Nexus 10 replaced.

So my tablet stopped working completely a few days after getting the 4.2.1 OTA update (had the busted base firmware) so I called up the devices support on Google Play, explained the situation to the guy on the phone and he emailed me a form that told me what I needed to do. Used the provided link to organise a pickup time/location and used a special link to order a new tablet (with the money being held until it's verified as covered by warranty).

I have my new tablet with the old one being picked up last week. Hopefully it doesn't take long to verify the tablet broke from no fault of my own and they release my money. The only strange thing is the form for the device pickup was about the Nexus 7 so hopefully it gets to the right place (And if it doesn't then it's not my fault because the guy I talked to knew it was a Nexus 10 and and the special play store link was for a nexus 10).

On the other hand I've been trying to get a refund for my Samsung monitor for a few months and I haven't heard anything from them.
[Nexus 10 General] tcb4:
They have been holding my money since nov 16. At this point I am somewhat worried. Perhaps I should call them.
[Nexus 10 General] Scared27:
haha yes. I would have called them after 2 weeks (and if I don't get my money by the end of this week I will be calling them).

edit: I just checked my bank account and I no longer have a pending payment from Google. huzzah!
[Nexus 10 General] boominski:
Yep. It's truly dreadful. Did Samsung indicate how long it would take for the repairs to be carried out? Are they covering the shipping costs too?
[Nexus 10 General] Biohazard0289:
They said 1-2 weeks before the device is at my door. They emailed the shipping label to me also. I included a small note with a list of device issues, just in case.

Dropped it off this morning, I'll report back with return time frame and what condition I get it back in.

To Samsung's credit, once I found someone who was knowledgeable it's been pretty smooth, we'll see what happens. Has anyone else done a warranty service for this device yet?
[Nexus 10 General] Biohazard0289:
Update: Received by Samsung on Thursday, spoke with someone at the repair center who said she is going to try to have it on its way back by Tuesday morning. Verified screen would be replaced and tested prior to return.
[Nexus 10 General] 263629749:
Does this apply to the UK......
[Nexus 10 General] Jayrod1980:
Please please let me know how this goes! I've yet to get a good one by Google but my original is the best of the lot. Everything other than the wonky notification light and screen are perfect and i don't want a worse one at the expense of the screen. If they just put a good panel in there it would totally be worth sending in for warranty work!
[Nexus 10 General] Biohazard0289:
Sure, I have every intention of keeping this thread updated when I know something. As far as i'm aware and from what the employees at Samsung Support/Samsung Repair Center have said, this is one of the first (if not the first) warranty service requests processed for this device.

We'll see how it goes..
[Nexus 10 General] BarryH_GEG:
All of Samsung's standard service and support services apply. It's on their site as the GT-P8110.

http://www.samsung.com/us/support/owners/product/GT-P8110HAEXAR
[Nexus 10 General] Jayrod1980:
Waiting with baited breath on the return of your device man. Tomorrow is Tuesday... hopefully they send you some kind of tracking tomorrow so you know it's back for sure. Would be sad if they put the new panel in, fired it up, actually looked at it, found that they have a real problem with the screen tech they put in this thing and had to go through a few to get a good one! I'm more afraid that they just check to see if you have one that powers up, take a 2 second look at it and send it back. I would honestly live with very minor light bleed at 80-100% brightness and NO DIMMING BAND. The band is what is distracting to look at. I honestly cannot see my light bleed anymore, even when I look for it. It is only one spot, and only visible (barely) when I first power up at max brightness. It's that awful half inch dimming that runs the entire camera side of the device... the LONNNNG edge.
[Nexus 10 General] Biohazard0289:
I regret that I did not take a before picture, but I'll know if it's repaired. I hope it is flawless, but it's not something I'm expecting. No update today, hopefully some news tomorrow.
[Nexus 10 General] Jayrod1980:
Well whatever their resolution... It will let me know the limitations of what they can repair. If my replacement sucks badly... Ill send that one back as well. If your repair nets you a near perfect repair then Ill just send the original in to them. As I've stated many times before, minimal light bleed under extreme conditions is OK for me... The dimming is not.
[Nexus 10 General] Biohazard0289:
I completely agree. I don't really expect to have a flawless unit in terms of light bleed, but I'll admit that I am disappointed with the amount of bleed on some of the units we've seen.

Update on Samsung: According to the tracking system, the tech replaced the LCD panel and QC'd it, then two other individuals also signed off that it passes their QC. I plan to call today to see if anything else is being done, or if they plan to ship it soon. With the upcoming holiday, UPS may take require some extra time to get it here.
[Nexus 10 General] simonie2010:
thank you for posting this question ...i tried the answer on the reply n3 but he doesn't work with me plz help me
[Nexus 10 General] Biohazard0289:
Tracking number for shipment recieved. The email had some comments from a technician:

LCD dim/blank, SEG. lines/discoloration

RESOLUTION: LCD REPLACED, PRODUCT SHELL SECURED

I'm a little curious about the last line, what exactly would they have done to secure the shell?

Sent from my Galaxy Note II
[Nexus 10 General] phage80:
On one I returned the back cover had somehow become misaligned near the top where the snap on cover piece is, causing it to pop out occasionally.

Wonder if it might be something similar.
[Nexus 10 General] Jayrod1980:
When is it scheduled to be received? Please post photos and detailed yadda yadda. when you get it back. My RMA replacement strived today. After work ilk know whether I need to go your route.
[Nexus 10 General] Biohazard0289:
It's scheduled to arrive Dec. 24th, hopefully that'll be a worthy Christmas present.

I'll make sure to include everything (good or bad) as soon as possible.

Sent from my Galaxy Note II
[Nexus 10 General] 263629749:
Thanks for keeping us informed, I just requested a warranty support to Samsung UK, hope they can do something about my N10 light bleed.

UK people please stay tuned!
[Nexus 10 General] nathanhd123:
At last, someone from the UK to try it for us! Good Luck :laugh:
[Nexus 10 General] MoInSTL:
Thanks for posting the link. I didn't realize I could register it there. It's now registered.
[Nexus 10 General] Jayrod1980:
Ok man, now your "fix" is my only hope. The replacement came in... and it SUCKS. It's not as bad as the one before it but it is horrible. 5 points of light bleed, 3 of which are easily apparent on auto brightness in a normally lit room. Sending it back as well. I guess my first one is the one I'm keeping. You know, I don't really have any faith in Google's RMA process. Sure it's a great policy... love the advanced replacements, but it seems they are always bad. Went through 7 Asus Nexus 7's before finally just getting a refund. This device is great other than the screen problems and no back deformities or reboots... well not on stock rooted ROM anyway. If they put a certified fresh screen on there and it's good then I'll be happy. I'm glad your description cited the dim band as well as the light bleed. I really doubt their QC is as strict as ours would be, since we are the purchasers of this device, but I'm really hoping for the best. At any rate, the turn around by Samsung is awesome. I think Asus quoted over a month, and that wasn't near any sort of holiday. I'm praying your repaired device is pristine!
[Nexus 10 General] Biohazard0289:
Sorry to hear about your replacement. I also hope it comes back in great shape so everyone will have a possible avenue of getting a proper device. If it doesn't though, it would indicate that Samsung hasn't fixed the problem yet and we may all be waiting for awhile. I'm using my newest device from Samsung which I've been quite impressed with, so hopefully it will work out for the best.

I intend to post some sort of update the minute I can give the device a once over, and since I have no travel plans I assume I'll have pictures up prior to Christmas day. Although normally I don't hunt for device problems, I'll be putting it though the ringer to determine if progress has been made with the quality of the screen.

If I get a favorable result, I'll make sure the community is aware. :)

Sent from my Galaxy Note II
[Nexus 10 General] NeoAznMan:
I got my Nexus 10 tablet from Walmart which was shipped to there. I immediately found out that there's a spec of dust and a bad light bleed. I figured it might be a good idea to send it to Samsung rather than returning it to Walmart. I've called from their help number.

As of now its irritating that the customer service doesn't even have the slightest clue which department can take care of the Nexus 10 tablet. I've been going between the Mobile and Tablet department for like the 7th time right now. Mobile telling me to go to tablet and tablet telling me to go to mobile.
[Nexus 10 General] graffixnyc:
Maybe the OP can give you the number he contacted or the department he contacted. Also it might be best to use the Samsung model number when calling in and not saying a "Nexus 10" but give them the GT-P8110HAEXAR model number
[Nexus 10 General] supermi1:
I had the same issue, then about a week after being told they cannot help I recieved an email with my mailing label, BY THEN I was already on attempt to find a good nexus 10 number 4 or 5 LOL

Good luck!

Maybe try samsung support on facebook or google+ :)
[Nexus 10 General] NeoAznMan:
I called them again taking your advice. It actually worked. I'm getting an email for the shipping. My model is actually HAVXAR although I told them HAEXAR, but I think they'll take it because of the S/N.
[Nexus 10 General] Biohazard0289:
I only got ahold of the proper department by using the number in the warranty booklet included in the Nexus 10 box, and the only referred to the device as the P8110. Sorry for the late reply.

Sent from my Galaxy Note II
[Nexus 10 General] sovereignty68:
Nice, it's actually better than they just randomly replace the device with a 'possibly defective one.