Is anybody else having problems with SDHC cards on Beagleboard?

Is anybody else having problems with SDHC cards on Beagleboard?

[David Hagood]

I have been trying to bring up a Beagleboard as a development platform
for a project at work, but I am having a killer problem: any significant
access of the memory card (a class 8 SDHC 8G card) will die with a
transfer error, followed by about 10 failed sector accesses, followed by
the system dying.

I've tried 2 different Beagleboards and 3 different cards by 2 different
manufacturers, and the problem is repeatable on all permutations. I've
put the cards into a card reader on my workstation and done a "dd
if=/dev/sdf of=/dev/null" to verify the cards aren't wedged.

I've searched for this on Google and found no references, but I cannot
believe I'm the only person seeing this - but am I?

RE: Is anybody else having problems with SDHC cards on Beagleboard?

[Premi, Sanjeev]

> -----Original Message-----
> From: linux-omap-owner@vger.kernel.org 
> [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of David Hagood
> Sent: Tuesday, January 20, 2009 6:09 PM
> To: linux-omap@vger.kernel.org
> Subject: Is anybody else having problems with SDHC cards on 
> Beagleboard?
> 
> I have been trying to bring up a Beagleboard as a development 
> platform for a project at work, but I am having a killer 
> problem: any significant access of the memory card (a class 8 
> SDHC 8G card) will die with a transfer error, followed by 
> about 10 failed sector accesses, followed by the system dying.
> 
> I've tried 2 different Beagleboards and 3 different cards by 
> 2 different manufacturers, and the problem is repeatable on 
> all permutations. I've put the cards into a card reader on my 
> workstation and done a "dd if=/dev/sdf of=/dev/null" to 
> verify the cards aren't wedged.
> 
> I've searched for this on Google and found no references, but 
> I cannot believe I'm the only person seeing this - but am I?
> 
[sp] I am using a Sandisk 4Gb card. Haven't seen any problems.
But, kernel is few weeks old.

> 
> 
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> 

Re: Is anybody else having problems with SDHC cards on Beagleboard?

[Jarkko Nikula]

On Tue, 20 Jan 2009 06:38:38 -0600
"ext David Hagood" <david.hagood@gmail.com> wrote:

> I have been trying to bring up a Beagleboard as a development platform
> for a project at work, but I am having a killer problem: any significant
> access of the memory card (a class 8 SDHC 8G card) will die with a
> transfer error, followed by about 10 failed sector accesses, followed by
> the system dying.
> 
> I've tried 2 different Beagleboards and 3 different cards by 2 different
> manufacturers, and the problem is repeatable on all permutations. I've
> put the cards into a card reader on my workstation and done a "dd
> if=/dev/sdf of=/dev/null" to verify the cards aren't wedged.
> 
For me both 2 GB microSD and 8 GB class 4 microSDHC cards are working
fine. E.g. no problems with these commands:

dd if=/dev/zero of=foo bs=1M count=500
dd if=foo of=/dev/null


My linux-omap head is

commit 45e5c5ffd32ade5a21a5e87b4040072590ec3ae1
Merge: c699464... 1de9e8e...
Author: Tony Lindgren <tony@atomide.com>
Date:   Sun Jan 18 14:08:53 2009 +0200

    Merge current mainline tree into linux-omap tree

And kernel is built with "make omap3_beagle_defconfig".


Jarkko