I ran into the same issue with an Intel Atom E6xx platform. Intel Atom processors have two video outputs - LCD or VGA. The graphics driver can be configured for dual (cloned) output or individual output. The video driver from the BSP is most likely setup for LCD-only output, which is why you are getting a blank screen on the VGA output.
For my E6xx platform, the solution was to use the MEGD tools to create a driver for dual output - http://www.intel.com/content/www/us/en/intelligent-systems/intel-embedded-me dia-and-graphics-driver/emgd-for-intel-atom-systems.html, and then editing the MEGD recipe that was in the BSP to include the custom driver. I am not sure what driver is being used in the enemlow BSP for the Z5xx processor. I post the driver and recipe changes used in the book shortly - http://www.annabooks.com/Book_OSSATOM.html Regards, Sean Liming Owner <http://www.annabooks.com/> ablogo color - 500 Tel: 714-970-7523 / Cell: 858-774-3176 From: yocto-boun...@yoctoproject.org [mailto:yocto-boun...@yoctoproject.org] On Behalf Of Andreas Enbacka Sent: Wednesday, March 06, 2013 2:40 AM To: yocto@yoctoproject.org Subject: [yocto] Problem with core-image-sato-enemlow Hello, I have just got started with the Yocto project and poky-linux, and I am now trying to build the core-image-sato reference image for target machine 'enemlow' (I have installed the enemlow BSP). The current Intel HW (Pico820) does boot the included binary image core-image-sato-enemlow without problems (I do end up at the Sato desktop). However, when I build the same image myself using Hob, I end up with a completely black screen. I have whitelisted the emgd-driver-bin-1.16 in build/local.conf, so it should be included in the built image. Also, no build issues are shown. Any idea what could be the cause of the problem, any information would be greatly appreciated? Best Regards, Andreas Enbacka e-mail: aenba...@gmail.com
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