[Intel-gfx] about 945GM tiling error

[Tino Keitel]

On Mon, Feb 02, 2009 at 22:38:02 +0800, Wang Xu wrote:
> Hi,
> 
> I tried latest driver, libdrm, and kernel on my 945GM system, and the
> tiling seems still got tiling problems.
> 
>  | (**) intel(0): Tiling enabled
>  | (==) intel(0): VideoRam: 262144 KB
>  | (II) intel(0): Attempting memory allocation with tiled buffers.
>  | (EE) intel(0): Failed to set tiling on front buffer: rejected by kernel
>  | (II) intel(0): Tiled allocation successful.
>  [...]
>  | (II) intel(0): Allocate new frame buffer 1024x768 stride 1024
>  | (EE) intel(0): Failed to set tiling on front buffer: rejected by kernel
>  | (II) intel(0): New front buffer at 0x800000
> 
> and if I used 2.6.1 driver rather than the current master, only the
> first error would be got. And, the glxgears fps of 2.6.1 is about 800,
> while the current master is about 650.

I see similar messages:

(**) intel(0): Tiling enabled
(==) intel(0): VideoRam: 262144 KB
(II) intel(0): Attempting memory allocation with tiled buffers.
(EE) intel(0): Failed to set tiling on front buffer: rejected by kernel
(EE) intel(0): Failed to set tiling on back buffer: rejected by kernel
(EE) intel(0): Failed to set tiling on depth buffer: rejected by kernel

And my hardware 3D is totally unusable (slow or black screen). This
happens with the 2.6 branch and kernel 2.6.29-rc3 with KMS enabled.

Regards,
Tino