In a Zorin PC (essentially Ubuntu 12.04), Linux Kernel 3.2.0-38-generic 64-bit GNOME 3.4.2 I tried two generic USB 3.0 card readers (thought the first might be defective) and took one apart to find out what chip it has: AT&T (I assume from the logo) GL3220 MX1AD03G03 148NAR11300. A quick Google shows GL3220 card readers are supposed to be plug-and-play with Linux. These are internal card readers (clones of each other) that connect to the motherboard's USB 3.0 header. The USB 3.0 port works like a charm. I used it with a Patriot 32GB USB 3.0 flash and it was pretty fast for a flash stick. But when I try a SD card the LEDs flash away and nothing mounts. If I open "Computer" on the desktop it shows a host of "Generic" drives, so it seems the system "sees" the thing but for some reason won't mount it. Some digging shows that in the past, Kernel developers fixed similar issues with card readers. I came across a fix for RealTek card readers, but not for this chip. Anyone know if anything is in the works, or if there's something I can do to fix this problem now? (Ain't new hardware fun?)