PKI 2013-1: DuoVero Version R3919 - Failure to load root filesystem from microSD

Notification Date: January 9, 2013 

Effective Date: Immediately 

Product Name: DuoVero Computer-on-Module 

Product Number: GUM4430C 

Product Revision Number: R3919 and R3920 only 

Known Issue:

Linux fails to load the root filesystem during boot, presenting symptoms such as kernel hang at “Waiting for rootfs...,” U-Boot message “**Partition 1 not valid on device 0 **” or being able to load the rootfs by physically pressing down on the microSD card slot during boot. 

The card detect signal for the DuoVero microSD card slot is inverted as compared to other OMAP4430-based platforms. This discrepancy was masked on DuoVero versions prior to R3919. 

Resolution:

Customers with DuoVero COMs with build numbers R3919 or R3920 can apply the following patch to their kernel: http://www.sakoman.com/git/gitweb.cgi?p=linux.git;a=commitdiff;h=bbf4f0f05d4f7b954b258e2e5c3a2faccb34cc99. 

The above patch corrected this issue on builds R3919. If this behavior persists after applying the patch, affected customers should contact Gumstix Customer Support at This email address is being protected from spambots. You need JavaScript enabled to view it. .

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