Problem with core-image-sato-enemlow

Problem with core-image-sato-enemlow

[Andreas Enbacka]

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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: aenbacka@gmail.com


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Re: Problem with core-image-sato-enemlow

[Sean Liming]

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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-bounces@yoctoproject.org [mailto:yocto-bounces@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: aenbacka@gmail.com


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