radeon 8500 mergedfb flicker

[Alex Deucher]

On Thu, 2 Dec 2004 10:20:59 +1100, Dave Airlie <airlied at gmail.com> wrote:
> I'm running a Radeon 8500LE with dual head DVI->VGA plugged into a 17'
> CRT and a VGA  15' flat panel on the VGA connector.
> 
> I'm running the montior at 1152x864 and the flatpanel at 1024x768.
> 
> I'm seeing some flicker on my CRT when I scroll a window on either
> screen, shadowy dark flickery bands appear at different points across
> the screen....
> 
> My config file is at
> http://www.skynet.ie/~airlied/radeon/XF86Config.radeon_mergedfb (with
> the 1152x768 replaced with 1152x864..)
> 
> Is this a bus bandwidth issue or something like that? should I give up
> my dream of dual head  3d and go back to using a PCI card for the
> second head?

I've had no problems with mergedfb on my m6 and 9200.  could you post
your log somewhere?  it's a stretch, but you could try the patch on
bug 1912.  also, do you get the artifacts when using "regular"
multi-head?

Alex

> 
> Dave.