Re: Will my phone buzz?

2009-05-05 Thread Steve Mosher
If you remove the two tork screws and remove the front cover you will se 
the board rev.

In anycase if you have A5 or A6 you are susceptible to the buzz issue. 
If you bought 900
and dont experience it it is likely that you are communicating on 1900 
which doesnt,
according to anecdotal reports, suffer from the buzz symptoms

Shachar Shemesh wrote:
 Timo Juhani Lindfors wrote:
 Shachar Shemesh shac...@shemesh.biz writes:
  
 Can anyone tell me how I can find out? Is there some way to look at
 the board of a phone and tell whether it has the fix?
 

 cat /proc/cpuinfo

 If it says 0305 you have V5 and need a fix.

   
 I'm sorry if I'm asking a silly question. When I do cat 
 /proc/cpuinfo I get Revision: 24420360, so presumably I'm okay. 
 Then again, while trying to figure out what field I was supposed to be 
 looking at, I stumbled upon 
 http://wiki.openmoko.org/wiki/Neo_FreeRunner_Hardware. From there, it 
 seems that the user space gets that data from the kernel, which in 
 turn gets it from the boot loader, which doesn't get it from anywhere 
 at all hardware related. I've upgraded my boot loader with an image I 
 downloaded from the Internet (so I could boot from ext2 partitions on 
 a microsd card). So now I have to wonder whether the fact that it says 
 24420360 actually means anything other than I upgraded my u-boot?

 I have the debug board, which implicitly means I have the screw driver 
 needed to open the device (already did once). I was more looking for 
 something that says this is the change you need to do in order to fix 
 the buzz, and then just open the device and have a look whether that 
 change is already in place.

 Thanks,
 Shachar

 P.s.
 This is somewhat academic, as I'm fairly certain that my phone is a V6

 

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Re: Will my phone buzz?

2009-05-04 Thread Shachar Shemesh

Johny Tenfinger wrote:

On Sun, May 3, 2009 at 10:47, Timo Juhani Lindfors timo.lindf...@iki.fi wrote:
  

If it says 0305 you have V5 and need a fix.



You're wrong. GTA02A5 and GTA02A6 don't differ regarding buzz. Now
only A7 and A8 differs.
  

Assuming I need the fix, where do I get the right capacitor?

Shachar

--
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Lingnu Open Source Consulting Ltd.
http://www.lingnu.com

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Re: Will my phone buzz?

2009-05-03 Thread Timo Juhani Lindfors
Shachar Shemesh shac...@shemesh.biz writes:
 Can anyone tell me how I can find out? Is there some way to look at
 the board of a phone and tell whether it has the fix?

cat /proc/cpuinfo

If it says 0305 you have V5 and need a fix.

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Re: Will my phone buzz?

2009-05-03 Thread Shachar Shemesh

Timo Juhani Lindfors wrote:

Shachar Shemesh shac...@shemesh.biz writes:
  

Can anyone tell me how I can find out? Is there some way to look at
the board of a phone and tell whether it has the fix?



cat /proc/cpuinfo

If it says 0305 you have V5 and need a fix.

  
I'm sorry if I'm asking a silly question. When I do cat /proc/cpuinfo 
I get Revision: 24420360, so presumably I'm okay. Then again, while 
trying to figure out what field I was supposed to be looking at, I 
stumbled upon http://wiki.openmoko.org/wiki/Neo_FreeRunner_Hardware. 
From there, it seems that the user space gets that data from the 
kernel, which in turn gets it from the boot loader, which doesn't get it 
from anywhere at all hardware related. I've upgraded my boot loader with 
an image I downloaded from the Internet (so I could boot from ext2 
partitions on a microsd card). So now I have to wonder whether the fact 
that it says 24420360 actually means anything other than I upgraded 
my u-boot?


I have the debug board, which implicitly means I have the screw driver 
needed to open the device (already did once). I was more looking for 
something that says this is the change you need to do in order to fix 
the buzz, and then just open the device and have a look whether that 
change is already in place.


Thanks,
Shachar

P.s.
This is somewhat academic, as I'm fairly certain that my phone is a V6

--
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
http://www.lingnu.com

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Re: Will my phone buzz?

2009-05-03 Thread Rask Ingemann Lambertsen
On Sun, May 03, 2009 at 02:18:57PM +0300, Shachar Shemesh wrote:

 I'm sorry if I'm asking a silly question. When I do cat /proc/cpuinfo  
 I get Revision: 24420360, so presumably I'm okay. Then again, while  
 trying to figure out what field I was supposed to be looking at, I  
 stumbled upon http://wiki.openmoko.org/wiki/Neo_FreeRunner_Hardware.  
 From there, it seems that the user space gets that data from the kernel, 
 which in turn gets it from the boot loader, which doesn't get it from 
 anywhere at all hardware related.

   It _is_ read from the hardware by the kernel. Please see function
gta02_get_pcb_revision() in arch/arm/mach-s3c2442/mach-gta02.c.

 I have the debug board, which implicitly means I have the screw driver  
 needed to open the device (already did once). I was more looking for  
 something that says this is the change you need to do in order to fix  
 the buzz, and then just open the device and have a look whether that  
 change is already in place.

   Easy enough. Unscrew the two screws, remove the front cover and check the
area left of the mic. If there isn't a huge (relatively - 3.2 mm by 1.6 mm
or more) capacitor left of or above the small resistors and capacitors, then
you don't have the buzz fix. Examples:

http://anyotherkey.googlepages.com/c
http://vanous.penguin.cz/files/om/SOP/

   Note: This does not apply to the GTA02v8 which is buzz-fixed differently.

   Btw, do we really need two wiki pages for the same thing?

https://wiki.openmoko.org/wiki/GSM_buzz
https://wiki.openmoko.org/wiki/Buzz_Fix

-- 
Rask Ingemann Lambertsen
Danish law requires addresses in e-mail to be logged and stored for a year

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Re: Will my phone buzz?

2009-05-03 Thread Johny Tenfinger
On Sun, May 3, 2009 at 10:47, Timo Juhani Lindfors timo.lindf...@iki.fi wrote:
 If it says 0305 you have V5 and need a fix.

You're wrong. GTA02A5 and GTA02A6 don't differ regarding buzz. Now
only A7 and A8 differs.

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Re: Will my phone buzz?

2009-05-03 Thread Timo Juhani Lindfors
Johny Tenfinger seba.d...@gmail.com writes:
 On Sun, May 3, 2009 at 10:47, Timo Juhani Lindfors timo.lindf...@iki.fi 
 wrote:
 If it says 0305 you have V5 and need a fix.

 You're wrong. GTA02A5 and GTA02A6 don't differ regarding buzz. Now
 only A7 and A8 differs.

I didn't say A6 would not need a fix, only that A5 needs one :-)


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Will my phone buzz?

2009-05-02 Thread Shachar Shemesh

Hi all,

I fairly recently bought a freerunner. My cellular provider uses 900MHz, 
and I (and my call partners) do not complain of any buzz. However, I 
understand that the buzz mostly happens with 1800 and 1900 cellular 
networks, and so the fact I hear no buzz does not mean my phone is buzz 
free.


For the next few weeks I have high access to SMT soldering equipment and 
people who know how to work them. I'd prefer to find a way to find out 
whether my phone needs the buzz fix now (and how to apply it), rather 
than later (when I will have no capability to actually fix it).


Can anyone tell me how I can find out? Is there some way to look at the 
board of a phone and tell whether it has the fix?


Thanks,
Shachar

--
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
http://www.lingnu.com

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