Hello,
I had the same problem with a different monitor, 1280x1024, you can read all about it in this thread:
http://www.powerdeveloper.org/forums/vi ... php?t=2104
To cut a long story short: I bought a different HDMI to DVI cable and then it did work.
If your monitor and cable do work with a different machine or different OS or, if you don't wan't to buy a new cable just jet, here is the long story:
Try the latest Maverick release, go to the Linux support page:
http://www.powerdeveloper.org/platforms/efikamx/linux
Download the latest image, uncompress it, write it to an SD card, put the card in the efika and turn it on.
If that doesn't work, try hotplugging the monitor while the machine is booting (from the SD card), one or a few seconds after you turned the Efika on, make certain the display is not asleep, you may need to try this quite a few times before it works.
If that doesn't work it will be a bit more work to diagnose and hopefully solve the problem. It would be easiest with the debug board, I don't have it and I assume you don't have it either. Here it goes:
Because Genesi's linux releases do not come with sshd, you cannot login remotely on your Efika but, someone solved that problem, you can get what you need here:
http://steubentech.com/~talon/Efika-MX/ ... /maverick/
Read the README, copy the image or create the SD card and boot the Efika off of it, go to another machine, login remotely, with ssh, and execute the dmesg command. That will produce all the messages the kernel produced while booting and we need those to start diagnosing the problem, copy the output and post it here, in this thread.
If anything (or everything) isn't clear do tell me.
Good luck,
Frank.