xf86-video-intel 1.9.94: (WW) intel(0): Hardware claims plane A is off while software believes it is on

Wang Zhenyu zhenyu.z.wang at intel.com
Thu Apr 12 18:53:05 PDT 2007

On 2007.04.12 17:25:53 +0000, Barry Scott wrote:
> I'm testing Xorg 7.2 + updated modules needed to support intel 1.9.94
> running on 2.6.20 linux kernel with its drm drivers.
> I'm not seeing anything on the screen, the LCD has gone into screen 
> saver mode.
> However apps are happy running and I can get a screen snap shot that shows
> what I expect on the screen.
> How can I help debug this situation?
> The config and full log are available here:
> http://www.onelan.co.uk/xorg-tmp/945.conf
> http://www.onelan.co.uk/xorg-tmp/xserver-945.log

Try to comment "NoDDC" in your conf. 

> Here are some messages that may be related to the problem:
> (EE) intel(0): I830 Vblank Pipe Setup Failed 0
> (II) intel(0): Attempting memory allocation with tiled buffers and
>               large DRI memory manager reservation:
> (WW) intel(0): xf86AllocateGARTMemory: allocation of 10 pages failed
>        (Cannot allocate memory)
> I'm guessing that the (WW) is very at the heart of the problem.

No, this is not fatal. We try to alloc a large page first for cursor mem,
if it fails, as it wants physical addr, we'll try to alloc seperate buffers
for hw cursor. I know this message is confusing, we'd better to fix it. 

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