[uae] Re: Pointer trails
- From: "Keith G. Robertson-Turner" <uae-freelists@xxxxxxxxxxxxxxxxxxxxxxx>
- To: uae@xxxxxxxxxxxxx
- Date: Tue, 09 Mar 2004 22:14:04 +0000
On Tue, 2004-03-09 at 16:53, Richard Drummond wrote:
> I wonder if the common factor causing this problem for you and Keith is that
> you both have NVidia chipsets. Are you both using NVidia's X drivers? (And
> does anybody out there experience this problem who doesn't have an NVidia
> chipset and X drivers?)
nvidia-settings-0.1.0-0.gen.1
nvidia-glx-devel-1.0.5336-0.lvn.3.1
kernel-module-nvidia-2.4.22-1.2174.nptl-1.0.5336-0.lvn.3.1
nvidia-glx-1.0.5336-0.lvn.3.1
name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.3
...
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: RIVA TNT2/AGP/SSE
OpenGL version string: 1.4.1 NVIDIA 53.36
...
Bus 1, device 0, function 0:
VGA compatible controller: nVidia Corporation NV5 [RIVA TNT2 Ultra]
(rev 17).
IRQ 11.
Master Capable. Latency=248. Min Gnt=5.Max Lat=1.
Non-prefetchable 32 bit memory at 0xfd000000 [0xfdffffff].
Prefetchable 32 bit memory at 0xf2000000 [0xf3ffffff].
> Perhaps there is some caching problem with the framebuffer memory?
>
> Do you both have MTRR enabled in your kernel? And does the NVidia X driver
> enable write-combining on your gfx card's memory? (Have a look
> in /proc/mttr).
>
Here's mine:
reg00: base=0x00000000 ( 0MB), size= 256MB: write-back, count=1
reg01: base=0x10000000 ( 256MB), size= 128MB: write-back, count=1
reg02: base=0xf2000000 (3872MB), size= 32MB: write-combining, count=1
reg03: base=0xf8000000 (3968MB), size= 64MB: write-combining, count=1
I'm not sure that I want to disable mtrr support though :(
However, I can temporarily switch back to the X11 nv driver, and see if
the problem disappears.
I'll try that now and let you know, although (since the problem is
intermittent) I might have to test this for a couple of hours to see
what happens.
--
Regards,
K.
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