Tiny Core Linux

Tiny Core Base => Micro Core => Topic started by: PJE on May 10, 2014, 06:12:23 PM

Title: Enabling 800x480 console framebuffer
Post by: PJE on May 10, 2014, 06:12:23 PM

Hi All,

Sorry if this is the wrong thread, or has been discussed before. I couldn't find anything which was specific to my requirements.

I have an embedded panel PC with a 7in 800x480 LCD. I'm looking to run a simple SDL application (2D, No sound) on the framebuffer without using X, or a desktop environment. It's almost a kiosk style application.

At present I can currently only select 640x480 via the boot options. I can run the program at 800x480 from a Lubuntu install on the same device.

Any help/direction would be appreciated. I'm looking for the simplest read only linux installations, and Tiny Core in it's minimal form would be ideal if I can get the correct screen resolution.

Thanks.

PJE

Title: Re: Enabling 800x480 console framebuffer
Post by: gerald_clark on May 10, 2014, 06:51:52 PM

I am not aware of any standard 800x480 vesa mode.
try a vga=ask boot code and see what modes are available.

Title: Re: Enabling 800x480 console framebuffer
Post by: PJE on May 10, 2014, 07:05:20 PM

The only non text mode is 640x480. I need to find out how the lubuntu framebuffer can operate at the native resolution.

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Title: Re: Enabling 800x480 console framebuffer
Post by: curaga on May 11, 2014, 03:41:50 AM

You didn't mention what's the graphics card?

Title: Re: Enabling 800x480 console framebuffer
Post by: PJE on May 11, 2014, 06:47:18 PM

The PC uses an N2700 atom processor. I'm not sure on the graphics core - possibly is GMA3600.

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Title: Re: Enabling 800x480 console framebuffer
Post by: curaga on May 12, 2014, 12:07:29 AM

Hm, that's a PowerVR chip. Not the best choice for non-Android use.

Lubuntu likely enables the experimental KMS support for that chip. It's still experimental even in the coming 3.15 kernel.  To get it in TC you'll need to build your own kernel.

Title: Re: Enabling 800x480 console framebuffer
Post by: PJE on May 12, 2014, 05:43:08 PM

Thanks for the information. I need a system which can run a single full screen 2D SDL application with Ethernet and the ability to allow power off at any time. I have a 10s power buffer to allow any storage to be unmounted, and final data storage.

Is there a guide as how to build a custom kernel with the correct video support?

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