topic i.MX6 Android 9 icon duplication in i.MX Processors

i.MX6 Android 9 icon duplication

stevegamble — Mon, 06 Jul 2020 15:18:40 GMT

We are in the process of upgrading our device (which is based on imx6dq/sabresd_6dq board) to Android 9 (p9.0.0_2.3.1 BSP). We noticed a weird issue that happens on Android 9 - icons/images (i.e. bitmaps) are being duplicated (see screenshots below).

Below are a few observations:

It is not related to a particular application. It happens in System Launcher, Settings and in our custom applications as well
It looks like it is related to the hardware acceleration. Disabling hardware acceleration for an application (using android:hardwareAccelerated="false" manifest flag) or system wide (using sys.viewroot.hw system property) does fix the issue.
The duplication happens to the icons/bitmaps that are allocated in regular memory (aka "software" bitmap), not in hardware (i.e. gpu, aka "hardware" bitmap). In other words, the duplication happens to "software" bitmaps when hardware acceleration is enabled.
It doesn't seem to be happening inside the WebView. Icons loaded from assets by a WebView don't seem to be duplicated.

It does feel like the problem is somewhere in ThreadedRender or related code that uses hardware acceleration to draw UI but it might as well be somewhere else, e.g. memory allocation.

Does anyone have an idea of what could be happening here and what can be done to fix this issue?

Re: i.MX6 Android 9 icon duplication

igorpadykov — Mon, 06 Jul 2020 23:18:46 GMT

Hi Steve

p9.0.0_2.3.1 BSP does not support i.MX6Q as described on below link:

Android OS for i.MX Applications Processors | NXP

One can try other, for example P9.0.0_2.2.0.

Best regards
igor
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Re: i.MX6 Android 9 icon duplication

stevegamble — Thu, 09 Jul 2020 16:41:18 GMT

Thanks Igor.

I'll mark this question as answered while we try an earlier supported version of the BSP.

Steve...

Re: i.MX6 Android 9 icon duplication

chpub70 — Fri, 28 Aug 2020 02:30:26 GMT

Hi Steve,

Did P9.0.0_2.2.0 resolve the problem you have ?

Best Regards,

Pun