Re: Xserver dor EP9307 ARM Board

Erik Mouw <mouw@xxxxxxxxxxxx> · Thu, 10 Apr 2008 12:45:59 +0200

On Thu, Apr 10, 2008 at 03:50:29PM +0530, Bhaskar wrote:
> Thanks for the pointer. I am using 800x600 resolution.
> 
> The image is not flickering completely as you mentioned.
> 
> In my case, normal window movements are proper but the window
> containing image files show some delay in moving from one place to
> another.

Lots of redraw events, doesn't surprise me that it flickers. Use a
window manager that moves an outline of the window instead of the whole
window. Good old twm did it that way. It had to because at that time
there were only dumb framebuffers without any kind of acceleration. I
guess the cirrus framebuffer is just such a dumb framebuffer so don't
expect fancy tricks that need 2D acceleration to work.

> I understood that Cirrus FB is not concerned with this as this is
> entirely handled by Xserver which is from xorg in my situation.

The framebuffer still has to accept the read/writes from the X server.

> In general when windows are moved, what functions are invoked.  These
> must be in Xserver and not in kernel framebuffer.  Enabling trace
> messages in Xserver is resulting in different kind of errors (like
> image itself not loading, etc).

I suggest you ask that on a more appropriate forum, like one of the
Xorg mailing lists.

Erik

-- 
Erik Mouw -- mouw@xxxxxxxxxxxx