yashsingh1/xdaforums huggingface dataset:
[Xperia Tablet Z Q&A, Help & Troubleshooting] blurblur:
It's a common problem. Reported all over another forum.
[Xperia Tablet Z Q&A, Help & Troubleshooting] fonsus:
Is there any work around? Can post a link to the thread here?
[Xperia Tablet Z Q&A, Help & Troubleshooting] polarbearmc:
no fixes or anything yet? second for that link please. this is really annoying. just got my keyboard and i guess it's useless?
[Xperia Tablet Z Q&A, Help & Troubleshooting] :
I have a tab z and the z handset which has been upgraded to 4.2.2 stock. Both have this issue
[Xperia Tablet Z Q&A, Help & Troubleshooting] Netblade5000:
I am having the same issue using either a Bluetooth keyboard, mouse or sixaxis controller un my Tablet Z Wifi.

If someone is using a bluetooth keyboard/mouse without wifi problems, could they post here as well. I would like to know If every one has this issue.

This thread is about the same problem: http://xdaforums.com/showthread.php?t=2346553 could the be merged?
[Xperia Tablet Z Q&A, Help & Troubleshooting] hasenbein1966:
I'm listening to internet radio over bluetooth (instead of the inbuilt speakers), have a Microsoft Wedge Bluetooth keyboard connected and am writing this at the same time.

2 Bluetooth devices at the same time plus Wifi, all working.

(Wifi channel is 9. SGP311.)
[Xperia Tablet Z Q&A, Help & Troubleshooting] Netblade5000:
[MENTION=4209701]hasenbein1966[/MENTION] Could you do a internet Speedtest with and without bluetooth connected, what firmware are you running, and how many wifi networks are on your channel?

My Internet is fast (30000kbps download) I am geting that speed on my tablet z. As soon as I connect my bluetooth keyboard (acctully it is the Microsoft Wedge as well) it drops to ~300kbps. So something happens to my wlan on the Tablet Z. As I am living in a Flat I do not have a channel for my self. I am sharing that channel with 2 other Wifi Networks.

If someone knows what to change on the Tablet Z please tell my, I bougth it just for working with keyboard/mouse!

Mine is SGP312 (32GB, Wifi only), firmware is 10.1.C.0.370, device is rooted, bootloader is locked
[Xperia Tablet Z Q&A, Help & Troubleshooting] polarbearmc:
just tried playing around with my channels...

the good news is i think i may have actually upped my speeds by changing to a different channel!

the bad news is i drop from around 3.5MB/sec with just wifi on, to under 0.03MB/sec with Bluetooth turned on and a bluetooth keyboard connected... and then it didn't even finish the speed test, it just stopped and said there was a connection error.

this is awful.
[Xperia Tablet Z Q&A, Help & Troubleshooting] hasenbein1966:
Did someone already test whether changing the WiFi to a 5 GHz channel (Bluetooth works in the 2.4 GHz band where also normally the WiFi operates) helps?

(Can't test it myself because my router doesn't support 5 GHz.)
[Xperia Tablet Z Q&A, Help & Troubleshooting] jfrancis999:
Hi All,

This seems to be pretty common (saw someone complaining in the Transformer forums). I've noticed the same issue myself. I'm using wireless BT headphones, and the Wifi throughput drops precipitously when I'm streaming music to them. I've got a dual-band router, so I'll set up the tablet to connect to 5Ghz and let y'all know what happens.

Thanks,

John Francis
[Xperia Tablet Z Q&A, Help & Troubleshooting] hasenbein1966:
I have now measured speeds with a speedtest app.

When I only have connected my Harman Kardon Bluetooth audio receiver, the WiFi works perfectly normal and has same throughput as without Bluetooth on.

When I connect my BT keyboard, Wifi speed becomes very low (below 1 Mbit).

So, not BT in general is the culprit - it depends on the kind of device!
[Xperia Tablet Z Q&A, Help & Troubleshooting] jfrancis999:
OK, with the tablet on 5GHz I get ~55 Mbps. On 2.4 GHz, ~21Mbps. These are Harman Kardon BT headphones.

Regards,

John Francis
[Xperia Tablet Z Q&A, Help & Troubleshooting] Netblade5000:
[MENTION=2952246]jfrancis999[/MENTION] these rates look both ok. There shoul be no problems. Are these with audio streaming to the Headphones? If you have a Bluetooth keyboard, mouse or gamepad (playstation 3 controller) could you maybe test with one of these connected an 5GHz?

[MENTION=535343]all[/MENTION] if we make a list of all working and not working devices we can maybe find what they have in common an what is the problem.

Not Woking:

Microsoft Wedge Mobile Keyboard, BT Profile HID, BT Version and Class unkown

Playstation 3 dualshock3 controller, BT Profile HID, BT Version and Class unkown

Whit these devices connected Wifi speed drops to under 1Mbit/s

Does any one have a BT Keyboard and while it is connected to the tablet z Wifi speed does not drop under 1Mbit/s?

[MENTION=258513]someone[/MENTION] having good understanding of android and bluetooth: is there a way, I can force the tablet to reduce trassmitting power to class 2 or 3? I want to test if that makes any difference but I do not know how.
[Xperia Tablet Z Q&A, Help & Troubleshooting] hasenbein1966:
It's really strange, since a simple keyboard should need much less bandwidth than transmitting audio over BT, so one would expect the Wifi drop with the audio device, not with the keyboard...
[Xperia Tablet Z Q&A, Help & Troubleshooting] polarbearmc:
I just have a Motorola Keyboard & Mouse combo pack... I'm not seeing any model number on it, but it's definitely Motorola. Totally kills wifi speed when either one or both are connected. So you can add that to the list.
[Xperia Tablet Z Q&A, Help & Troubleshooting] jfrancis999:
Hi All,

With the tablet connected to 5GHz I get the following speeds:

* Playstation 3 controller disconnected: 58Mbps down/30Mbps up

* Playstation 3 controller connected: 42Mbps down/12Mbps up

With the tablet connected to 2.4GHz I get the following speeds:

* Playstation 3 controller disconnected: 4Mbps down/30Mbps up (not sure what's up with the download speed)

* Playstation 3 controller connected: 103Kbps down/52Kbps up (OUCH!)

Regards,

John Francis
[Xperia Tablet Z Q&A, Help & Troubleshooting] Netblade5000:
[MENTION=2952246]jfrancis999[/MENTION] Thanks for your tests!

I will be in my office on Monday. There I will try a 5GHz wifi as well. If that works well, we have at least a workaround. Still, I hope there is a fix for this problem, but untill then we could bypass that problem.

I will post the results here on monday.

I am still looking for someone who can tell me, how to reduce the transmission power of bluetooth on android!?
[Xperia Tablet Z Q&A, Help & Troubleshooting] polarbearmc:
after a week, sony support finally wrote me back. they said it sounds like a software problem and i should use the PC Companion software to do a software repair. anyone else tried this yet? also if i do this, is there any way to backup EVERYTHING, including my widget setup, icon placement, folders, settings... all of it...
[Xperia Tablet Z Q&A, Help & Troubleshooting] hasenbein1966:
Bah, they simply have no clue.

Like the dudes on the official Sony support forum, this support guy just gave some random halfway "fitting sounding" answer, like a Windows support guy who says: "Restart Windows"...

I wouldn`t use this "PC Companion" crap, honestly.
[Xperia Tablet Z Q&A, Help & Troubleshooting] polarbearmc:
yea i wasn't planning on it. just figured i'd report in with what they said. what a shame...
[Xperia Tablet Z Q&A, Help & Troubleshooting] Netblade5000:
I tested at my office with a 5GHz wifi network:

With Microsoft Wedge Mobile Keyboard connected to my Tablet Z i got the following results:

2,4GHz: 0,5MBits/s

5GHz: 50MBits/s

like jfrancis999 already tested, I get the same results.

5GHz Wifi is not affected by this issue.

@ anyone If there is someone using a Bluetooth keyboard on this tablet and a 2,4GHz Wifi getting more than 1MBit/s, please tell us!
[Xperia Tablet Z Q&A, Help & Troubleshooting] Xelstyle:
Using the exact same keyboard, I got similar results with 2.4Ghz running only 0.6Mbits/s
[Xperia Tablet Z Q&A, Help & Troubleshooting] polarbearmc:
wow, can anyone else confirm that? i was thinking about upgrading my router soon anyway (its an asus rt-16... 2.4ghz only) but if i can hear 1 or 2 more people saying the issues went away with a 5ghz router, then i think i might place an order this week...

still sucks though if i'm on vacation or something and want to get a little work done... bah...
[Xperia Tablet Z Q&A, Help & Troubleshooting] Netblade5000:
Thats exactly what I did. I only confirmed post #17 by jfrancis999 on page 2...
[Xperia Tablet Z Q&A, Help & Troubleshooting] polarbearmc:
oh yea... i forgot about that post from a few days ago... :) i guess i'm buying a new router. haha
[Xperia Tablet Z Q&A, Help & Troubleshooting] SteadyVG:
I am facing the same issue with Xperia Tablet Z. I am trying to use bluetooth headphones and having wifi connectivity issue on device.

Main issue comes during youtube app, issue occurs less frequently when playing youtube on chrome browser.

Also, if I remove tablet case. performance improves but issue does occur after a while where it will stop playing video. I have not been able to figure out any resolution so far.
[T-Mobile, Samsung Galaxy SIII] rationalmind:
Hi everyone,

I just got the Samsung Galaxy S3 and I was able to root and flash a custom ROM. I'm currently on Axis ROM: (4.1.2 customized Touchwiz) Link:

http://xdaforums.com/showthread.php?t=2089801

The kernel I had right now is stock and I'm not every satisfied with the battery life. Therefore, I try to flash a different one but keep getting error in recovery. I tried TWRP recovery, it shows the red error Fail. I also tried Clockmod touch, get the same error saying unable to extract/flash the zip.

Yes, I did wipe cache several times before flashing. Additionally, I had download different kernel zip (more than 10 of them) in case it's a bad download. Nothing works. I do have a decent experience flashing ROM and stuff with Android devices and this is the strangest thing I ever ran into.

I'm on T-mobile Galaxy s3 by the way. Any insight is appreciated. Thank you!
[T-Mobile, Samsung Galaxy SIII] marcoxx626:
Make sure you're flashing a compatible kernel. There are touchwiz and aosp kernels, the title for the rom should say what kind of base it has.

Edit: looks like it's a touchwiz rom so make sure you flash a kernel that's compatible with touchwiz. What kernel are you trying to flash?

Oh and also make sure the download is correct.

Sent from my SGH-T999
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
What versions of twrp and cwm did you use?

When you booted into recovery did it look the same each time? I ask because you got some red error fail on both???

Open a root capable browser and go to /system

Look for install-recovery.sh

If its there, delete it and reinstall twrp/cwm.
[T-Mobile, Samsung Galaxy SIII] rationalmind:
Yes, they are compatible. Kinetic Pulse, Darkside, KT kernel, all three of them fail.

I didn't find such file in /system. The recovery looks different. I do know how they look like since I used both of them before. TWRP shows error in Red (Fail). cwm doesn't, but show error that unable to extract zip.

CWM Touch 6.0.2.3

TWRP 2.4.2.0

Yes, all these recovery and kernel are T-mobile. I tried full wipe/no wipe but nothing helps.

P.s: thank you for replying though.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Do you have busybox installed?
[T-Mobile, Samsung Galaxy SIII] rationalmind:
Yes I do. Just check it in Terminal.
[T-Mobile, Samsung Galaxy SIII] DocHoliday77:
Try using the latest recoveries.

Twrp - 2.5.0.0

Cwm - 6.0.3.1
[Android Q&A, Help & Troubleshooting] rjwil1086:
Hello All,

So here's the situation: I am trying to use my cheap virtually unbrickable tablet to learn more about kernel development and eventually ROM building.

I have extracted the manufacturers (WoPad) LiveSuit image and used split_bootimg.pl to break up the boot image.

I extracted the config file from the kernel image using extract-ikconfig and it created a config file. I didn't see the config in /proc.

So, I have the factory ramdisk and the factory kernel config.

I have downloaded several kernel sources (lichee-3.0.8, ChritianTroy's 3.0.36, and another one from linux-sunxi 3.0.72). I can successfully compile all of them without errors and they all generate zImages, uImages, etc using the factory config as well as the sun4i_crane configs they come with.

When I repack the boot.img with the newly created kernel and install it on nandc it wont' boot past the android icon (u-boot). I was hoping someone could shed light where I'm messing up. When I compare my boot.img to the factory one, they both have the same offset where the kernel starts (0x00000800). I have also ensured I'm replacing the kernel modules when I'm changing kernel versions.

Here is the line I'm using to repack the boot.img

mkbootimg --base 0x40000000 --pagesize 2048 --kernel zImage --ramdisk ramdisk-repack.cpio.gz --board sun4i --cmdline \"console=ttyS0,115200 rw init=/init loglevel=8\" -o boot.img

OR

mkbootimg --base 0x40000000 --pagesize 2048 --kernel bImage --ramdisk ramdisk-repack.cpio.gz --board sun4i --cmdline \"console=ttyS0,115200 rw init=/init loglevel=8\" -o boot.img

OR

mkbootimg --base 0x40000000 --pagesize 2048 --kernel uImage --ramdisk ramdisk-repack.cpio.gz --board sun4i --cmdline \"console=ttyS0,115200 rw init=/init loglevel=8\" -o boot.img

Any help will be appreciated. Also, I'm building on Ubuntu 13.04 with Google GCC 4.6 from the ndk. I have built kernels for other devices without issues. This one has me stumped.

Thanks
[Android Q&A, Help & Troubleshooting] rjwil1086:
Here is an output from UART

CPU: SUNXI Family
Board: A10-EVB
DRAM: 512 MiB
NAND: 3800 MiB
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
--------fastboot partitions--------
-total partitions:9-
-name- -start- -size-
bootloader : 100000 1000000
env : 1100000 200000
boot : 1300000 2000000
system : 3300000 10000000
data : 13300000 40000000
misc : 53300000 100000
recovery : 53400000 2000000
cache : 55400000 8000000
UDISK : 5d400000 90400000
-----------------------------------
Hit any key to stop autoboot: 0

NAND read: device 0 offset 0x1300000, size 0x2000000
33554432 bytes read: OK

Starting kernel ...
[Android Q&A, Help & Troubleshooting] rjwil1086:
Since I posted my question, I have managed to work my way through some errors but I'm stuck again. Now I'm having issues getting past init. It is stuck in a loop because of this:

<4>ft5x_ts: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)

[ 8.740000] ft5x_ts: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)
<6>init: command 'insmod' r=-1

[ 8.780000] init: command 'insmod' r=-1
<4>hv2605: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)

[ 8.840000] hv2605: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)
<6>init: command 'insmod' r=-1

[ 8.850000] init: command 'insmod' r=-1
<4>ump: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)

[ 9.000000] ump: Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)
<6>init: command 'insmod' r=-1

Again, if any kernel devs out there are reading this your assistance is appreciated.
[Android Q&A, Help & Troubleshooting] rjwil1086:
I was able to solve this on my own too. Ended up being the tool chain I was using. I used 4.4.3 and all is well. Only bug I'm having is a WiFi driver issue now.
[Android Q&A, Help & Troubleshooting] draconian:
dude i know its a bit late but can you walk me through your entire kernel compilation procedure starting by sharing the source and the tricks of booting the newly created kernel ?
[HTC Amaze 4G] AwayFromReality:
I have a T-mobile HTC Amaze running Android Revolution with 4ext recovery. Recently my phone lost cell signal and would not pick it up again. I tried wiping data/cache/dalvik and reinstalling the Android Revolution ROM but the problem is still there. After reinstalling the ROM twice the wifi won't turn on and just says ERROR. I tried going back into 4ext and now it started to give me an error "can't mount /internal_sdcard" when trying to choose zip from sdcard.

Anyone has any idea what's going on?

Thanks
[HTC Amaze 4G] SuperAfnan:
Ok dude I think I know what's going on, then outlook doesn't look too bright either. It looks like your internal sd became corrupted and now it can't mount. So back up your internal sd, reformat, and put your stuff back in and see if it helps.

If that doesn't help I guess you just had a bad luck Brian moment. This internal sd problem happened to me twice already.

For the wifi error, that's probably because you dirty flashed ARHD over a perfectly fond ARHD. You should have just airplane mod'd it for a while or rebooted. When you wipe the cache don't dirty flash the entire rom for one simple problem. When you reboot after you wipe the cache, it just takes a minute to rebuild the 'blocks. '
[HTC Amaze 4G] AwayFromReality:
Well when I connect the phone via usb, it shows up on my computer but none of the files I had show up in the drive, including the zip for the ROM. I most likely lost all my stuff but that's okay. How do I reformat my internal sd at this point?

I tried to do a clean install of ARHD by doing a complete format inside 4ext, maybe something went wrong along the way. So If I can get my internal sd to work, can I format data/cache/dalvik and reinstall the rom? will that fix the problem?

Thanks for your help
[HTC Amaze 4G] SuperAfnan:
Ok the way to format the internal sd is in 4ext. I remember it being somewhere in the wipe section. Choose format sd then internal sd.

Here's a tip when flashing, use format all partitions except sd. This is better than wiping cache then dalvik then data. This method clears of everything but it doesn't touch your sd. This is how to comoletely clean install roms without errors in flashing.

And if after you flash it and see no bars, T-mobile is probably having a bad connection or doing renovations to their towers or something.
[HTC Amaze 4G] AwayFromReality:
Thanks a lot for your help man. Formatting the internal sd worked. Installed ARHD and everything works perfectly. I'll remember to format all partitions except sd from now on.
[HTC Amaze 4G] SuperAfnan:
I'm glad I could help! :) And I appreciate you pressing thanks, :):thumbup: more people need to stop being arrogant and actually use it, because many people WILL get annoyed and not help people in the future since they gain nothing from it.
[HTC Amaze 4G] eadrang:
It will come back, one day. I have a same problem, too
[HTC Amaze 4G] AwayFromReality:
Since you're giving out free advice, pressing thanks is the least I could do.

Do you mean the internal_sd problem will come back? If so what do you think is the root cause?
[HTC Amaze 4G] eadrang:
No, i don't. I think the cause is the quality of internal not good, and during use that fone, i format it so much.
[HTC Amaze 4G] SuperAfnan:
The amaze has a wacky internal sd I think, in general. Mine got corrupted twice in its life in my ownership. Who knows what journeys my Amaze had been through with the previous owner(s).
[Verizon Samsung Galaxy Note II] harajyuks:
I am officially a Samsung fanboy, having learned the ropes on my Motorolas, and struggle through elevation with my HTCs, I have hit my stride here with Samsung. I wanted to pose some questions on the Galaxy NX.

How does it look as a device to a fellow Samsung user(s), who also has expirence with cameras and a general knowledge of camera hardware?

At what price point does it become absurd for a serious photographer to consider this device?

Would you reccomend this as a device to a person, not unlike myself, who is thinking of purchasing a camera for the first time because of the attractive device that is the Galaxy NX?

Where does the NX fall short when compared to, in your judgement, other comparable cameras on the market?

Is the Android OS, being originally intended for cameras, as attractive as it seems to be on this device, or am I puttting too much stock in my favorite mobile OS?

Concerns about your typical device like battery life and miscellaneous hardware are important to the point where it will impact the camera function, but not really something I am trying to discuss. I am really looking a conversation on the functionality of the NX as a camera for a 1st time buyer.
[Verizon Samsung Galaxy Note II] hopesrequiem:
There's a note 10 phone?! Wow where? :rolleyes::p:banghead::cool:
[Verizon Samsung Galaxy Note II] shangrila500:
This camera poses quite a few nice options, for one you'll be able to edit everything on the camera and you'll have free range to all the camera apps like FV-5, so you'll always be able to do whatever you want. You can edit your photos on the camera with something like the Photo Mate app that includes a fully fledged Raw converter that offers similar levels of control to what you're used to from Adobe ACR or other desktop Raw converters ( https://play.google.com/store/apps/...wsMSwxLDEsImNvbS50c2dhbWVzLnBpY3R1cmVpbmZvIl0.).

The camera has pretty damned good specs and seems like it would be a very very nice camera, however if you are wanting a damned good camera that will introduce you to the world of amazing photography you should go with something else. There is too much unknown about this camera, the price is rumored to be around €1000 or $1300 but no one knows for sure at the current moment, it has outstanding potential but at this point these cameras are more toys, to me at least, than a real camera. Before you blow an insane amount of money, and yes I absolutely love what Samsung is doing with these cameras because it opens up so many more possibilities, you should really get a regular DSLR and use it for a while until Samsung gets all the bugs ironed out of these cameras. I won't even consider buying one until next year at the very earliest because I think they have a long way to go before they're as fully functional as most other DSLR cameras. I have been thinking about buying a original Galaxy camera and just playing around with it but honestly it is still too rich for my blood.

If you are wanting to get a good DSLR that has amazing functionality, takes amazing pictures, has a whole bus load of additional lenses and features, and much more I would recommend that you look into something a bit less expensive.

I have personally been using the Olympus E-620 since it was released and still have no want to upgrade to a newer DSLR just because this one has everything I want and need and then some. It's an excellent camera at an insane price because it was released in '09. That is what you need though if you've never dealt with these cameras before, something for a good price that is still competitive with the newer DSLRs that are being released. The price on Amazon right now is only $349 for a used one with the 14-42 mm lens and $450 for a used one with the 14-42 mm and 40-150 mm lenses. You can most likely find them on eBay for cheaper as well.

Here is a fairly decent link about the Galaxy NX:

http://www.dpreview.com/previews/Samsung-Galaxy-NX

One about the Olympus E-620:

http://www.dpreview.com/reviews/olympuse620

If you're dead set on getting a Android camera I would at least wait until the NX had been out for 3 months so you would have some idea of what it is like so you can make damned sure that you won't be blowing that money up a wild hogs ass.

Sorry if my post is a little jumbled, I'm half asleep.

---------- Post added at 12:08 AM ---------- Previous post was at 12:08 AM ----------

Huh?
[Verizon Samsung Galaxy Note II] harajyuks:
That's a great gem of information you dropped on me, thanks. Like I said I am not familiar with DSLR or Mirror less cameras at all, so all contribution is appreciated. I have been spending a lot of time watching YouTube videos on where to start as a fledging photographer, and the idea of starting with a cheaper DSLR was the idea a lot of you tubers were recommending.

Also, there was an overwhelming number of people who had the idea to get either a Cannon or Nikon due to the longevity of the 2 platforms, and the availability of accessories. I'm glad to hear of other options.