Dear All,

I am using a ISEE Igepv2 CPU board, booting from microSD card. I am using 
SanDisk Extreme Pro 8GByte cards.

I experience occasional hang-ups of the Linux system in different severity:

1.) System seems to hang for some seconds, but afterwards continues work with 
no kernel messages in this case

2.) kernel is putting out message:
[ 4211.686096] mmcblk0: error -110 sending read/write command, response 0x900, 
card status 0xe00
[ 4211.701538] mmcblk0: error -110 transferring data, sector 674693, nr 42, 
card status 0xc00

 Afterwards the Linux system is completely dead - no SSH, no ping, nothing.

The problem occurs quite often -> every 4rd to 5th reboot after a few minutes 
working time.

I have used the ISEE Igepv2 kernel 2.6.37-8 and Igep X-Loader 2.6.0-1 in this 
case with igep00x0-defconfig.

Linux system is compiled, using the Pengutronix PTXDist 2011-11-0 cross compile 
environment

I tried afterwards on same CPU board with  Transcend Premium 8GByte cards with 
no problems.

I tried with mainline kernel 3.15-rc4 and u-boot-2014-04 afterwards. Here I do 
not get the above messages, but still with some SanDisk cards I get a complete 
system hang-up. 

Same, with Transcend cards, or even some other SanDisk cards I do not have 
problems.

The Linux images are duplicated using a script with parted, mkfs and tar to 
copy the images.

Does anybody else already had such problems?

best regards,

Martin Wilde--
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