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+-- Forum: PINE A64(+) (https://forum.pine64.org/forumdisplay.php?fid=4)
+--- Forum: Android on Pine A64(+) (https://forum.pine64.org/forumdisplay.php?fid=5)
+--- Thread: Writing to Android Frame Buffer (/showthread.php?tid=2705)
Writing to Android Frame Buffer - Vasant - 11-09-2016
Hi,
I am trying to write to the android frame buffer as root and nothing shows up on screen.
cat /dev/urandom > /dev/graphics/fb0
Any ideas why this doesn't work ?
Vasant
RE: Writing to Android Frame Buffer - ayufan - 11-11-2016
Because this is not how it works. All FB processing is done by SurfaceFlinger which is responsible for managing and flushing them to screen.
RE: Writing to Android Frame Buffer - Vasant - 11-11-2016
I is true that Androis uses Surface Flinger. But what I am trying to do is write directly though the device interface.
This does work on ODROID-C2 Android and few other devices. Perhaps it has been disabled for Allwinner.
Vasant
RE: Writing to Android Frame Buffer - MarkHaysHarris777 - 11-11-2016
hi, the frame buffer console does not work ( on the pine board ) for gnu+linux either, unless you use the experimental DRM kernel patch.
This is a serious glitch for gnu+linux also, because power linux users leverage the six(6) frame-buffer consoles ( some call black screens ) profusely; so for some people its a show stopper, haha I've actually gotten used to edit with VI without a cursor on the linux frame-buffer.
This sound even more ominous, because you can't get ANY output to the FB con ?