Re: Xserver dor EP9307 ARM Board

["Martin Guy" <martinwguy@xxxxxxxx>]

I don't know if this is your specific problem, but the info may be relevant.

The display driver in this chip, or some aspect of Cirrus' fb driver, is faulty.
In all boards I have tried, the maximum resolutions that are stable
are 640x480x24bit, 800x600x16bit or 1024x768x8bit - higher than that
(in any sense) the display jitters: the entire frame image jumps one
pixel to the right for one frame two or three times a second - in much
higher resolutions the frame jumps much further than that - half or
more of the screen right and down.

If you're already using a low enough resolution, maybe you could
describe your "flickering" more explicitly.

That said, Cirrus' fb driver has nothing to do with this mailing list,
which is about mainline linux kernel development...

    M

    M

On 4/10/08, Bhaskar <abc.bhaskar@xxxxxxxxx> wrote:
> Dear Team,
>
> The frame buffer and XOrg for EP9307 board were provided by Cirrus
> Logic.  When I move the window containing images, there is some
> flickering.  Normal windows movement are fine.
>
> Inorder to trace the issue, I introduced trace messages in XServer.
> But these messages appear only at Linux bootup time.  When I move the
> window, none of the messages appear.
>
> I found folders link fb, cfb, render, etc in XServer.  The enabled
> trace messages are in fb folder.
>
> Somebody kindly provide a pointer to understand the flow control of
> XServer.  When I move the window what functions might be invoked.
>
> Regards.
>
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