Hi all,<div><br></div><div>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.</div>
<div><br></div><div>The XO-1.75 software is build 21 (12.1.0), firmware is Q4D17.</div><div> </div><div>The error message in the /var/log/messages is:</div><div><div>Oct 7 11:18:44 schoolserver kernel: [157819.866661] sdhci: Switching to 1.8V signalling voltage failed, retrying with S18R set to 0</div>
<div>Oct 7 11:18:44 schoolserver kernel: [157819.876896] mmc0: error -110 whilst initialising SD card</div></div><div><br></div><div>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.</div>
<div><br></div><div>This error message is mentioned in </div><h1 style="font-family:Georgia,'Bitstream Vera Serif','New York',Palatino,serif;font-weight:normal;font-size:23px;margin:0.7em 0px;color:rgb(35,71,100);line-height:20.183332443237305px;background-color:rgb(255,255,255)">
Ticket #11736</h1><div><br></div><div>I'd be happy to give more info, or do testing. </div><div><br></div><div>George</div><div><br></div>