uSD corruption

[Ed Kapitein]

On Friday 16 December 2011 00:39:36 fdvjoif at vodafone.it wrote:
> Il 15/12/2011 22:57, Boudewijn ha scritto:
> > On Thursday 15 December 2011 22:23:56 Timo Juhani Lindfors wrote:
> >> fdvjoif at vodafone.it writes:
> >>> experience, during a day of usage, several freezings. I mean, when it
> >> 
> >> 1) What kernel?
> >> 2) What boot loader?
> >> 3) What boot options?
> >> 4) What filesystem?
> > 
> > 5) uSD speed?
> > 
> > 
> > _______________________________________________
> > Openmoko community mailing list
> > community at lists.openmoko.org
> > http://lists.openmoko.org/mailman/listinfo/community
> 
> Sorry for the missing infos.
> OS: qtmoko v35 with kernel 2.6.34;
> bootloader: qi (shipped with qtomoko v35), no particular boot options,
> IINW; filesystem: ext2;
> uSD type: micro SDHC sdc4 8 gb class 4
> 
> Regards
> Joif

Hi Joif,

Please take a look at [1] and [2] on how to set the SD clock to a lower value.
The drive strength param might have changed with the newer kernel, you have to 
google a bit to see what is the right one.

Kind regards,
Ed

[1] http://wiki.openmoko.org/wiki/Supported_microSD_cards/SD-C02G
[2] http://wiki.openmoko.org/wiki/Supported_microSD_cards

PS I still have sometimes data coruption on the SD card ( once every 2 months 
or so) so it still is not perfect, but very usable.