Hi all, I've been working on a XO-1.75 as XS project. The smallest form factor XS would use an SD card for School Server storage. So I purchased fast, large SD cards from Amazon. These cards work in my mac, and they initialize, and appear to work on the XO-1.5 running build 860.
The XO-1.75 software is build 21 (12.1.0), firmware is Q4D17. The error message in the /var/log/messages is: Oct 7 11:18:44 schoolserver kernel: [157819.866661] sdhci: Switching to 1.8V signalling voltage failed, retrying with S18R set to 0 Oct 7 11:18:44 schoolserver kernel: [157819.876896] mmc0: error -110 whilst initialising SD card In my reading about SD cards, I discover that some SD cards are not genuine. I have looked at /sys/... and the manufacturing number was "003" which is appropriate for sandisk. This error message is mentioned in Ticket #11736 I'd be happy to give more info, or do testing. George
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