Frame Buffer Issue

[Pawan]

Hi,

 

I am working on Mistral DM3730 board, and have already ported Android 2.3.4 on it.

I am trying to run Android VNC server(fbvnc) on it and VNC client on x86 Linux Machine.
But facing some issue, I am getting Android Boot Screen only at VNC client side eventhough android homescreen is displaying on LCD screen.

Following is the snap shot.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Android VNC Server tries to access /dev/graphics/fb0.

But for Android Froyo version, It is working perfectly.

Can somebody please suggest some idea to resolve this issue.

 

 

Thanks,

 

Pawan

[Sam Berro]

This is because you are using the hardware composer driver to draw images directly to the lcd not the framebuffer device. The frame buffer is used until the hwc is initialized through SurfaceFlinger.

-- Sam Berro

 

Pawan

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 -- Sam Berro

[Pawan]

Hi Sam,

 

Thanks for reponse.

Can you please explain me tad more that what shall I do, so that I can see what ever is running on LCD at the VNC client side.
Or in other means what changes are made in Android 2.3.3 kernel that results this scenerio.

 

[Arun Joseph]

Hi Pawan,

Can you try the below sources for vnc server. It works for beagleboard
and beaglebone. So It should work for DM3730 as well.

git clone -b rowboat-gingerbread git://gitorious.org/rowboat/droid-vnc-server.git

Regards,
Arun

On Jan 18, 2:44 am, Sam Berro <sambe...@gmail.com> wrote:
> This is because you are using the hardware composer driver to draw images
> directly to the lcd not the framebuffer device. The frame buffer is used
> until the hwc is initialized through SurfaceFlinger.
>
> -- Sam Berro
>
>
>
>
>
>
>
>
>
> On Tue, Jan 17, 2012 at 7:11 AM, Pawan <pawan.s.rath...@gmail.com> wrote:
> > Hi,
>
> > I am working on Mistral DM3730 board, and have already ported Android
> > 2.3.4 on it.
> > I am trying to run Android VNC server(fbvnc) on it and VNC client on x86
> > Linux Machine.
> > But facing some issue, I am getting Android Boot Screen only at VNC client
> > side eventhough android homescreen is displaying on LCD screen.
> > Following is the snap shot.
>

> > <https://lh4.googleusercontent.com/-VKPGVIwl3pA/TxVcJeKRr3I/AAAAAAAAAD...>

[Sam Berro]

Try Arun's suggestion and report back to us. I am interested in this as well.

 

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unsubscribe: android-porti...@googlegroups.com
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 -- Sam Berro

[preetam m.n]

what does you screen cast or ddms show ?

As usually /dev/graphics/fb0 is what is used in screen cast.

- Preetam

"The great pleasure in life is doing what people say you cannot do"

[Pawan]

Hi Peter,

when I capture screen using ddms, its gets correct image  of whatever going on the screen.
I think ddms uses dalvik-cache.

[Sam Berro]

No, it uses the Screenshot class in SurfaceFlinger, indirectly by creating a pipe and executing screencap to get the pixels.

--
 -- Sam Berro