Develop Bugs

[Q] USB Data transfer rate is too slow in my desire...help plz..!!

After rooting,, my Desire's usb data transfer rate has drastically reduced...
currently i'm running Open Desire 4.0 froyo rom,
i have tried many ROMs but the data transfer dint improve ,
i'm getting 1.5 to 2Mbps depending on the Size of the file,
i'm using class2 Transcend 8gb sd card....
so can somebody tell whats wrong with my cellphone..???

harish.awe said:
After rooting,, my Desire's usb data transfer rate has drastically reduced...
currently i'm running Open Desire 4.0 froyo rom,
i have tried many ROMs but the data transfer dint improve ,
i'm getting 1.5 to 2Mbps depending on the Size of the file,
i'm using class2 Transcend 8gb sd card....
so can somebody tell whats wrong with my cellphone..???
Click to expand...
Click to collapse
because have you ROOT

Class 2 microsd write speed is 2mbps. Seems your transfer rates are fine. Try a class 4 or 6 card and see what you get.

killawatts said:
Class 2 microsd write speed is 2mbps. Seems your transfer rates are fine. Try a class 4 or 6 card and see what you get.
Click to expand...
Click to collapse
No, if you have rooted phone, after root slow usb
I have Class 10 and slow. Before root OK, after slow.
Indepedence sdcard, fat32 or fat+ext ... slow

Absolutely,, before rooting i was gtting 5mbps transfer rate with the same sd card.....
But i dont understand what does rooting to do with data transfer rate,,,,???

harish.awe said:
Absolutely,, before rooting i was gtting 5mbps transfer rate with the same sd card.....
But i dont understand what does rooting to do with data transfer rate,,,,???
Click to expand...
Click to collapse
It's probably the EXT partition...
I have the same problem.

I dont have a SD EXT partition and its really SLOW! 500KB/S! Please helpp! Got alot of stuff copying back to sdcard

Can be a kernel problem as well. Try to search on the forum, I recall a thread where was a solution to this.

Transcend class 2 surely goes over 2 MB/s writing speed, i would also say it's something that has to do with the microSD partitions,maybe formatting and repartitioning would help

AlSopranos said:
I dont have a SD EXT partition and its really SLOW! 500KB/S! Please helpp! Got alot of stuff copying back to sdcard
Click to expand...
Click to collapse
are you confusing the write speed and the read speed?? when you copy something from your sd card to somewhere else. that is the read speed! you will get about 5mb/s on any class of sd card... when you copy somthing to a sd card, thats the write speed, and there is no way you will ever get more than 2mb/s with a class 2 card, end off! full stop

Pretty sure class determines the minimum, not the maximum, write speed.

I'm also quite pi**ed off with the copy speed.
On stock rom it was definetely fast and now absolutely slow.
Are you serious it is because of root?
Well, i prefer root more than faster writing speed - but i would really love to know the reason for!

What ROM do you have now? Flash a kernel with the SD fix, and you'll get back some speed, but not the maximum (if your card is partitioned).

I'm using Amethyst RC 7 (2.3.2), using A2SD+.
i think for GB is no kernel fix available? But to be serious, i've never thought about another kernel as the one which is included in the rom.
Any help is appreciated

so, i got the hint to use multi-móunt sd card which works really fine. I get again about 2mb/sec which is absolutely ok..

Actually, yes this is Kernel related.
Sadly the latest Kernel .37 is affected.
But Luckily there is a fix.
Look here
http://forum.xda-developers.com/showpost.php?p=11187612&postcount=808

lol strange but i was getting around 1-1.3mb on my class-2 8GB card,now after rooting,i am getting 3-4mbps.
also on other card which was 2gb(donno about its class)i used to get 3-4mbps write speed & now after rooting i get 10mbps.
P.S. i have custom rom installed

I had the same prob...
Solved it by ,completely formating my SDCard (dont forget to mount the partitions in Recovery) and after flashing a new rom,i flashed Cutts kernel and all works fine now again

I used to have approximately 5.0MB/s writing speed before rooting my HTC Desire. Since then, the speed dropped to 150~500KB/s. I tested with OpenDesire, PAYS-MIUI, MIUI, CM6/7 and they all give me the same slow speed. I read in one of the forum that Kernel 2.6.35.x solves the speed problem but I have not tried it. Anyway, a satisfactory work around for me is to use FTP file transfer from File Expert. The downside is, you'll need a stable WIFI connection to transfer large files.
Cheers

[Q] Could my video recording be laggy becouse of my SD card?

Hy, i have a routed desire running auras 7.6.1 (i think, anyway the latest of his roms) and a kingston class 6 microsd. I have testet the sd on my laptop right after i got it and it could sustain a rate of 7mb/s write and around 10 to read. Now i formated it twice, reinstaled rom and record at 800x600 even if i choose mp4 or h.264 i get an anoying 1 sec frreeze at each 20-30 sec of recording...i mean recording never stops....i can see that freeze only at playback. I tought its the player so i have copyed the movie to pc and i still get the same freeze on pc too, so im thinking its a writing problem on sd card or something...
Ps if i plug my phone to pc and use it as mass storage device and upload a file to phone i only get a sustained speed of 1,5-2mb/s is that ok or is it rly somthing wrong with my card as i suspect...
Excuse my poor english and typing mistakes i send it from my desire thanks.

There seems to be a problem with SD card speeds in Froyo / Sense ROMs. You could try a non-Sense ROM, e.g. CyanogenMod 6, Defrost or OpenDesire - I had similar problems to you and got around them by switching to CM6. If you decide to try another ROM it might be worth using the "SD Card Speed Test" app from Market to benchmark before and after you change ROM.
Let me know how you get on...

Hy, i have tested the sd card with that aplication, i get 2mb write and 4mb read. I have instaled cyanogen and another rom without sense, speed went from 2mb write to 3mb write and that was all...i have tryed it without an ext3 partition also and speed was the same... so i went back to sense rom... since the speed improvement its not much. Maybe someone can recomend me an sd card wich works at greater speeds with a rooted desire, and maybe a place where i can buy it from UE thanks.

that's strange. I have a class 4 Kingston 16GB card and I get 6mb write and 5mb read!
Phil

littlej said:
Hy, i have tested the sd card with that aplication, i get 2mb write and 4mb read. I have instaled cyanogen and another rom without sense, speed went from 2mb write to 3mb write and that was all...i have tryed it without an ext3 partition also and speed was the same... so i went back to sense rom... since the speed improvement its not much. Maybe someone can recomend me an sd card wich works at greater speeds with a rooted desire, and maybe a place where i can buy it from UE thanks.
Click to expand...
Click to collapse
You said earlier that you have a class 6 SD card, so you should be getting at least 6MB/s. Do you have something other than your phone that you can test your SD card in, for example a card reader? That would help you to work out whether the problem is with your SD card or the phone.

if u can recomend me a software to test it in windows 7 x64 i can test it in my laptop

Hy, well problem is solved for me. I have tested the card in laptop and i was geting a 2mb/s write and sometimes jumped at 3-4mb/s max. So i sent it back, and got an A-data 8gb class 6. I pluged it straight into phone, recorded a video and worked flawless, i installed android sd card speed test and i got a write of 6mb/s and 7mb/s read. Afther that i did an ext3 partition on it, and got same write and read speed, so problem was the SD card. Thanks.

[Q] Class 6 MicroSD card 'disappears' in XP

Just want to know if the Desire HD has problems accessing the microSd card (especially if it's a class 6) when connected to a PC in 'Hard Drive' mode
Let me explain...
Firstly - I have a rooted phone with Android Revolution HD (v5.2.3)
I had the original 8Gb Class 2 card that came with the phone, which I swapped with a Kingston 8Gb class 4... had no problems with it.
I could connect up the phone to my PC (Windows XP + SP3) as 'Disk Drive' & copy files back & forth between them with no problems - no matter how large they are or what type
The 8Gb got a 'little full' recently (I filled it with APK Backups,Music ,ebooks & 'comics' etc), so brought a Samsung 16Gb Class 6 from Amazon
I connected up to phone as 'Disk Drive' & copied over the contents of the phone DIRECTLY to the 16Gb (which was in a Card reader) with no problems.. then put the 16Gb into the phone (after unmounting etc safely) & all apps etc work fine.
NOW - If I connect the phone up as 'Disk Drive' to the PC, although I can copy OFF the 16Gb to the PC with no problems,
If I try copying file ONTO the 16Gb (regardless of size/type)... I MAY be lucky enough getting 2-5 files across before XP 'loses' the drive & asks 'Please insert a disk into drive...'
Now I'm pretty sure it's not XP the problem - I can put the 16Gb into a card reader & files copy over with no problems (I've plugged the card reader into motherboard USB, front panel USB and even through a USB Hub)... it only seems to happen if I access the card through the Phone.
Is this because -
it's a Class 6 card...
A problem with the Phone design...
Due to ARHD Rom (if so would updating to the latest version fix this ??),
or is there a way to prevent XP from losing connection ??​Many thanks in advance

I think its a bug in that rom. It does not have anything to do with sd card, if you can, update it or just try any other rom and i am sure it will work.

kaleavi said:
I think its a bug in that rom. It does not have anything to do with sd card, if you can, update it or just try any other rom and i am sure it will work.
Click to expand...
Click to collapse
I may just try that in the future - just don't want to install a new ROM (It'll have to be latest ARHD anyway, as I have a full HTC Navigation licence) & then have to reinstall everything (yet again)
However I can currently get around this little 'problem' by using 'File expert' app & using FTP over my WiFi, as that seems to work OK,... a lot easier than having to remove the SD card each time
But thanks for the suggestion anyway

[cyanogenmod 7.1] Serious problem with usb transfer - it goes crash

Hello everyone!
I have rooted HTC Wildfire with cyanogenmod 7.1.
When I plug it in PC via USB everything seems to be ok.
Then I copy some files >5MB to the sd card.
At the begining transfer looks good, however after 10s transfer stoped.
USB connection is lost and the problem appears every time I try to copy files on my SD Card.
If I try to do it by Remote Deskotp via Wi-Fi everything is ok even with large files.
If I try to do it in Recovery mode the speed is very low (about 1,5MB/s) however it works.
I also checked today CN 7.0 and last NIGHTLY - the same issue.
The second issue appears rarely. After lost usb connection my phone gets freeze and I have to pull my battery out and reset it
I have searched all the Internet and nobody has problem with lost connection on Wildfire. Everyone has problem with extremly low transfer speed via USB...
But I cannot copy files on my SD card through USB
Please help me

I also have the same problem with CM 7.1 Stable. Connect a USB, computer detects it and after that I disconnected. In my case, does not block my phone.
Is there a solution for this problem?

marcinostry said:
Hello everyone!
I have rooted HTC Wildfire with cyanogenmod 7.1.
When I plug it in PC via USB everything seems to be ok.
Then I copy some files >5MB to the sd card.
At the begining transfer looks good, however after 10s transfer stoped.
USB connection is lost and the problem appears every time I try to copy files on my SD Card.
If I try to do it by Remote Deskotp via Wi-Fi everything is ok even with large files.
If I try to do it in Recovery mode the speed is very low (about 1,5MB/s) however it works.
I also checked today CN 7.0 and last NIGHTLY - the same issue.
The second issue appears rarely. After lost usb connection my phone gets freeze and I have to pull my battery out and reset it
I have searched all the Internet and nobody has problem with lost connection on Wildfire. Everyone has problem with extremly low transfer speed via USB...
But I cannot copy files on my SD card through USB
Please help me
Click to expand...
Click to collapse
try to flash another kernel... that worked for me when i was on CyanogenMod7 Nightlies

Can you tell me where I can find "another kernel" ?
Since yesterday I have flashed phone for the first time.
How can I check my current kernel?

HappyWILDFIRE said:
try to flash another kernel... that worked for me when i was on CyanogenMod7 Nightlies
Click to expand...
Click to collapse
OK, I have KERNEL: 2.6.35.14-nFinity.
Can you tell me which kernel helped you with the problem?

The same as yours...the usb connectivity for me works... have you tried to flash another rom?
Sent from my HTC Wildfire using XDA App

I have checked CN 7.0, CN 7.1 and NIGHTLY full-239 - the same issue.
Now I'm using nightly full-239.
There must be problem with writing on SD card. Few houres ago I took 2 pictures and I got a message: SD disconnected.
Ofcourse capture pictures had not been saved and I had not have access to SD card.
After that I rebooted my phone and took more then 10 pictures and everything was OK...
SD is brand-new and on Android 2.2 with sense everything worked.
When I reading anything from SD card there is no errors. They appears during writing.

Backup your SD data somewhere, perform a full format (Not a quick format), and try again. Also, are you using any A2SD scripts/apps?

Do you mean full format of SD card? I think I have tried to do sth like that...
I have only quick office on SD card however before I have done it the issue has also performed.

Then I guess you have to for elimination of options. There can be only two cases - Bad SDCard or ROM issues. While I personally don't think it is a ROM issue (I use CM7 myself, and transfer stuff to my phone over USB on almost a daily basis), you can try going back to the stock ROM to check if the issue persists. Alternately, try borrowing an SDcard from somewhere else(If you don't have a spare), and check again (Preferably, after reflashing the ROM)

I have taken some trials and here are the results. If you don't have time read my summary please.
I change my max mhz (from 691) to 576 and then:
1) pull out my "bad" 8GB SD and insert my old 4GB SD
(reboot caused by taking out/in SD)
-I copied more then 800MB on it with no problems....
2) Insert again "bad" 8GB SD (no reboot)
- copied more then 500MB with no problems...
So I have changed my max mhz to 691
3) the same sd
- copied 800MB and everything seemed to be OK, however my phone got freeze. Reboot necessary by pulling the battery out.
-copied once again 800MB music - THE SAME EFFECT
As previously, the home button was able to back to home screen
and after disconnect usb cable there was information about it in upper bar.
So it wasn't full freeze however reboot necessary by pulling the battery out.
4) Back to 576 Mhz with no reboot
-Unfortunately point 3) and battery reboot
5) Correct reboot
-as above then reboot caused by taking out/in SD.... (?)
6) Thanks to reboot caused by taking out/in SD file transfer at 576Mhz was completed and phone did not get freeze...
7) Changed to 691Mhz, in/out SD - without 'auto' reboot...
file transfer completed without getting freeze !
SUMMARY:
SD card is good - Brand-new, micro sd Sandisk 8GB SDHC
When I take out/in my SD card it may cause reboot.
Thanks to taking out/in both at 576MHz and 691Mhz file transfer via USB works correctly and phone don't get freeze.
Transfer speed is ~2,5MB/s in all causes.
There was also no problem on the stock ROM (android 2.2.3 with Sense)
I really do not understand it. Can anybody explain me what the matter is?
To my mind it is not normal way to complete transfer with a good result...
I can add that my min frequency is all the time 352MHz..

So many bugs... don't know what to do!

Hey everyone ! First I swear I don't post this because I'm too lazy to make a proper search, I've been trying to solve my problems for two days...
Ok, I'll try to sum it up. Sorry if my english goes wrong at some point, I'm french.
Having problems with my micro SD in my Desire, I bought a new one, a kingston 8go, class 10.
My desire was under CM7, was S-OFF with a modified HBOOT. And except from bugs due to my SD (sometimes it would not be recognized), everything was working.
After installing the new micro SD, i did some manipulations: wipe, reinstallation, change of radio/RIL/kernel, and unfortunately ended up with no recovery and others bugs. So I decided (at one point I did stupid stuff) to reinstall RUU aaaand as I was S-OFF with a modified HBOOT, I bricked my phone. BUt after some hours and thanks to the forum, I managed to put back a RUU.
Then I did everything properly: ROOT/S-OFF with revolutionary, wipe, micro SD partition, and CM7 installation.
THen it was hell: I tried everything from regular install to legacy2ext and SimplytoExt etc every time it's really unstable. First the all thing is slow, then I can't flash the google apps, no matter what I try. If I install an app from the market, sometimes it works, sometimes it makes the phone reboot from the boot animation, sometimes it can't install etc.. Google maps was especially unstable.
THen, 10 or 20 manipulations, formatting, reinstallations later, I decided to check other rome, like Oxygen or milwild.
On my last Milwild install, everything is fluid but I can't install a single app (it's just stay on "installation" forever) and I can't wake up the screen after the phone goes to sleep.
Last but not least, my usb charger seems to have transfer problems. It's way to slow and the speed is not constant. During large transfers, comes files go corrupted. Am I usb bricked or something? I tried with another micro SD and it's the same problem;
So here I am, I really don't know what to do more? Any help?
Thanks a lot for your eventual answers!

Seems that installing a RUU solve all the problems for now, I wonder what in the process of putting a custom ROM could have caused so many differents and random problems. I'am doing the all process again to see if I can do it properly.
And again, I installed a custom ROM with CM7 hbott: impossible to download any app and the camera crashed. Any idea?

1. Don't use any D2EXT scripts with Cm7, obviously that's what caused the issue. If you NEED more space (even with cm7 hboot) try using DarkTremor's A2SD.
2. Before you flash a new ROM, do a FULL wipe (either from fastboot or recovery) - erase boot, system, userdata, cache, sd-ext (make sure you have an EXT-n partition on your sd-card, best program to use is gparted)

Desire is designed for class 4 SD card. Although some class 10's will perform at class 10 levels, many do not because of this. Kingston Class 10 being one example (I have one).
My kingston class 10, in Android, performs at class 6 speeds. Which would be ideal, but my class 10 Kingston was slower with data2sd than my class 4 sandisk.

Thanks for your answers:
Desire is designed for class 4 SD card. Although some class 10's will perform at class 10 levels, many do not because of this. Kingston Class 10 being one example (I have one).
My kingston class 10, in Android, performs at class 6 speeds. Which would be ideal, but my class 10 Kingston was slower with data2sd than my class 4 sandisk.
Click to expand...
Click to collapse
Ok, I might send it back and change for another model then. But still it can't explain the problems I have
1. Don't use any D2EXT scripts with Cm7, obviously that's what caused the issue. If you NEED more space (even with cm7 hboot) try using DarkTremor's A2SD.
2. Before you flash a new ROM, do a FULL wipe (either from fastboot or recovery) - erase boot, system, userdata, cache, sd-ext (make sure you have an EXT-n partition on your sd-card, best program to use is gparted)
Click to expand...
Click to collapse
I only was using this script to put the apps on the ext partition and I removed it. It's obviously not the problem since they stayed after a clean install.
I always fo a full wipe, I even formated all the partitions and my EXT partition is there and well aligned.
Here I am: I managed to "stabilise" with a gingerbread RUU, rooted and S-OFF with revolutionary.
I used RM recovery (with USB brick fix) and it seemed to help. I don't have any USB transfer problem any more.
The RUU works like a charm.
Then I tried again to install two customs romq, without any script or modification:
-on Milwild, I have still this "deep sleep" problem. I can use the camera, but I can't install any app from the market. It's stays on "installation" forever.
-On CM7 (I put the CM7r2 HBOOT with it) it starts well: I can install google maps. But then I try to open it and it freezes. Then I try to mount the FAT32 partition on my computer and it doesn't work. The cellphone also freezes when I try to reboot (there is the wheel, turning and turning, but nothing happens). SO I forced reboot, and then, google maps had just ... disappeard. I think my phone is haunted...
Isn't it strange that my cellphone is perfectly normal under RUU but can't bear any custom ROM???
I think I'm gonna go back to the RUU and try to use another SD card but I'm sceptical. If someone has a miraculous idea to share, I'll take it!!!
Thanks again

Well, rootSU, it seemed that you found the answer. I put another class 2 sd card and it seems to work again! I just spent hours on this for nothing... The strangest is that the class 10 card work perfectly when out of my phone...
Any advice about a good class 6/8/10 that could improve the performances without crashing like this?
EDIT: last question, I used the app2sd script you introduced, but I can't install any app with it, it says that I've got unsuficiant stockage space Oo.

I use.my class 10 Kingston and it works perfectly as a class 6. Plus its pretty future proof. Just no.good for data2sd.
Should work fine for everything else though
Sent from my HTC Desire using Tapatalk

Well, mine didn't worked at all, except the RUUs...strange! I have fully configured my class 2 SD card with simple2ext (only app on the ext partition, not data) and it works.
As I'm tireless, I'll try to put all this via nandroid on my class 10. If it could work like a class 6...

What did you use to partition the Kingston?
Sent from my HTC Desire using Tapatalk

I partitioned it several time, with gparted and recoveries. I'm a bit worried about some part of the hardware managing the connection with the SD card that could be partly broken. I decided to change my first SD card when I first saw a "you need to put an SD card" when I try to take a picture. I had problems with files disappearing from the SD and reappearing. Also I lost some applications that I couldn't appear. I figured the card was dying.
Then I put a new SD card, faster and with larger capacity and everything goes wrong;
Then I put the old one back and... for now, everything works.