SD slot + suspend

Doug Jones dj6mf at
Wed Sep 3 06:26:54 CEST 2008

Daniel Benoy wrote:
> I've been having trouble with my SD card ever since I upgraded my kernel (with 
> the unstable feed) and turned on suspend... specifically, it got wiped out :(  
> Multiple times.  I don't know if it's a coincidence or now.. I wonder if 
> someone who's brave and doesn't have important data on their card could try 
> reproducing this?   Mount a partition and/or run something like 
> badblocks /dev/mmcblk0 and then while that's going suspsend... and see if 
> your data goes poof.
> Maybe it's just me.. possibly a defective SD card.
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> Openmoko community mailing list
> community at

This is a known problem.  I'm still waiting for a definitive resolution 
before I order my FR.

It's not just openmoko that's affected.  This same bug took down the SD 
card in my OLPC laptop back in January.

There have been persistent rumors that there are people who understand 
this problem and know how to fix it. But I still haven't seen any 
announcement that the problem has actually, really, finally been 
eliminated in any shipping software.

Apparently this bug doesn't affect cards of size 512MB and smaller.

Many people who are trying to do things that require SD cards are 
working around the problem by disabling suspend.  Battery life suffers, 
but at least development can happen.

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