It looks like I should have waited one more day for the 11.12 release. Good work on 11.12.

 

Cheers,

 

 

Hi All:

       

        Since Panda board is now officially supported by Google, I decided to do a quick testing between Linaro build (release 11.11 – v2.3.7), Linaro ICS preview (v4.0.1) and Google’s ICS build for Panda-board (v4.0.1).

 

        Here are what I found:

 

1.      Google’s ICS build detects the resolution to be 672(H)x1280(W) on my monitor while Linaro builds default to 480x640.

I manually changed the screen resolution in boot.scr to be omapfb.mode=dvi:1280x672MR-24@60. The linaro ICS preview can now come up with 672x1280 resolution, but I encountered graph driver crash in 11.11 release (v2.3.7).

 

The video output came out on HDMI port for 11.11 release instead of DVI port as in Linaro ICS previous & Google’s ICS build.

 

This seems to tell me that there is a problem with graphic driver in 11.11 official release and EDID detection is not working for Linaro builds.   

 

2.      I ran Sunspider & 0xbench in Linaro ICS preview (in 480x640 resolution) & Google’s ICS build for Panda-board (in 1280x672 resolution).

Linaro ICS preview has slightly better result in Sunspider testing, but falls significantly behind in 0xbench. Changing the resolution to 1280x672 on the Linaro ICS preview build shows noticeable lag in UI performance.

 

This seems to suggest that Linaro ICS preview doesn’t enable GPU.

 

I simply followed the instructions in the release note to populate SD cards with proper images for testing.

 

Has anyone done similar testing? Is the above observation consistent with your result?

 

Thanks,

 

Alan Chuang

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