topic [Android] Rotation problem on the 2nd framebuffer in i.MX Processors

[Android] Rotation problem on the 2nd framebuffer

charleshuang — Wed, 17 Sep 2014 08:19:12 GMT

Hi Freescale,

Here is an issue about framebuffer rotation. Please help to investigate.

[OS]

Android JB 4.2.2 & Android KK 4.4.2

[Steps]

1. Set up two framebuffers to display in U-boot, e.g. video=mxcfb0:dev=hdmi,1920x1080M@60,bpp=32 video=mxcfb1:dev=lcd,1920x1080M@60,bpp=32 video=mxcfb2:off video=mxcfb3:off fbmem=28M,28M

2. Install an application which supports screen rotation, such as Antutu. Here, we take Antutu as example.

3. Execute Antutu -> Go to TEST page -> Select "Stability Test"

4. The 1st framebuffer will rotate normally from landscape to portrait mode. However, the 2nd framebuffer keeps in portrait mode.

The symptoms are different between Android JB 4.2 & KK4.4.

Operations can still be performed on JB 4.2 in portrait mode.

But screen is blocked and keeps trembling on KK 4.4 when we are moving mouse.

[Expected result]

Both the 1st & 2nd framebuffers should rotate to portrait mode.

[Additional information]

This issue does not happen on Android JB 4.3.

Best regards,

Daniel

Original Attachment has been moved to: antutu_3.2.1.apk.zip

Re: [Android] Rotation problem on the 2nd framebuffer

danielhung — Tue, 28 Oct 2014 07:18:07 GMT

Hi Freescale,

I record the symptom on both JB4.2 & KK4.4 for your references.

Please see the new attached video files.

Thanks,

Daniel

Re: [Android] Rotation problem on the 2nd framebuffer

qiang_li-mpu_se — Fri, 19 Dec 2014 08:00:11 GMT

For JB4.2.2, you can update the GPU libs "https://community.freescale.com/docs/DOC-102590", then it will be same as JB4.3 BSP.

Re: [Android] Rotation problem on the 2nd framebuffer

YixingKong — Wed, 31 Dec 2014 09:10:36 GMT

Charles, please close the DI if no more issue.

Thanks,

Yixing

Re: [Android] Rotation problem on the 2nd framebuffer

jim_lin — Mon, 19 Jan 2015 08:29:05 GMT

From the RD's reply, the 2nd display should not rotate according to Google design. Android 4.3 has 2nd display rotation, and that occupies more resource and may cause incorrect rendering issue. So RD considers 2nd rotation is incorrect behavior.

FYI~

This an automatic process. We are marking this post as s...

CommunityBot — Thu, 03 Sep 2020 15:42:38 GMT

This an automatic process.

We are marking this post as solved, due to the either low activity or any reply marked as correct.

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