android 4.4.2 on wandboard quad - change hdmi output resolution
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Thomas Konzett
Feb 9, 2015, 4:16:03 PM2/9/15
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Hey,
I'm using wanboard quad with official android 4.4.2 sources from wandboard.org together with an ELO IntelliTouch Screen connected by USB for touch and VGA via a standard HDMI to VGA converter from "QII-VIEW".
The problem is that the screen in android is shifted remarkably to the right bottom and most noticably that all the symbols are displayed in a wrong aspect ratio. For example the clock on launcher is not a circle as expected but an ellipse which is by far too high to be called a circle (and so on).
Searched a lot and tried some things but I don't get any change. I can change to the few video modes predefined but they produce either the same output or are not working at all.
What I tried in the meantime already is to build vanilla android & linux from native sources of linux, u-boot and ASOP project with the perfect guide of android.serverbox.ch on exactly same hardware and setup as before. I got it working there out of the box with perfect display and ratio. When I check there current video mode of /sys/class/graphics/fb0/mode ... then I get "U:1280x800p-97" displayed.
My issue now is: how to get the same good launcher ratio with the wandboard.org sources.
as far as the web says I have to change things in u-boot bootargs. I messed around already with my uEnv.txt but that seemed to have no effect at all.
Can anyone help or point me to a possible solution or helpful service offers? Any hint is great - I'm searching on this already for quite a time and this is the last point on a longer checklist which would make a great project successful.
Thank you in advance!
thomas
I'm using wanboard quad with official android 4.4.2 sources from wandboard.org together with an ELO IntelliTouch Screen connected by USB for touch and VGA via a standard HDMI to VGA converter from "QII-VIEW".
The problem is that the screen in android is shifted remarkably to the right bottom and most noticably that all the symbols are displayed in a wrong aspect ratio. For example the clock on launcher is not a circle as expected but an ellipse which is by far too high to be called a circle (and so on).
Searched a lot and tried some things but I don't get any change. I can change to the few video modes predefined but they produce either the same output or are not working at all.
What I tried in the meantime already is to build vanilla android & linux from native sources of linux, u-boot and ASOP project with the perfect guide of android.serverbox.ch on exactly same hardware and setup as before. I got it working there out of the box with perfect display and ratio. When I check there current video mode of /sys/class/graphics/fb0/mode ... then I get "U:1280x800p-97" displayed.
My issue now is: how to get the same good launcher ratio with the wandboard.org sources.
as far as the web says I have to change things in u-boot bootargs. I messed around already with my uEnv.txt but that seemed to have no effect at all.
Can anyone help or point me to a possible solution or helpful service offers? Any hint is great - I'm searching on this already for quite a time and this is the last point on a longer checklist which would make a great project successful.
Thank you in advance!
thomas
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