Dual Graphics cards and problem with video memory

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zzd10h
Posts: 546
Joined: Sun Sep 16, 2012 6:40 am
Location: France

Dual Graphics cards and problem with video memory

Post by zzd10h »

Hi,
I have a X1000 with a dual graphics card setup (Radeon HD6670 and Radeon9250).

For some programs (NetSurf and new Qt release) I encounters problem of very slow displays (programs are very slow and lagging)

What I see is that video memory is allocated on my 2 graphics cards. It seems strange.

In this screenshot, you will see :
-in the right SysMon, that my 9250 is unallocated BEFORE to run NetSurf
-in the left SysMon, that memory is allocated on both card when NetSurf is running (very very slow)
http://zzd10h.amiga-ng.org/Divers/NetSu ... on9250.jpg

In this one, you will see :
-that when I remove my second card all is well, NetSurf flys

http://zzd10h.amiga-ng.org/Divers/NetSu ... on9250.jpg

I have exactly the same problem with Qt applications.

It seems that I'm not alone to notice that (at least with NetSurf)

MBrantley made the same test with his X1000 with 2 HD cards.
http://www.amigans.net/modules/xforum/v ... mpost78922

Do you have an idea where is the problem ?
Thank for your help,

(Radeon9250 card is really useful by waiting for Warp3D and Overlay... ;)
http://apps.amistore.net/zTools
X1000 - AmigaOS 4.1.6 / 4.1 FE
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mbrantley
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Re: Dual Graphics cards and problem with video memory

Post by mbrantley »

I'll keep my eye on this thread.
chris
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Re: Dual Graphics cards and problem with video memory

Post by chris »

Just to add to this, there is no way that I can see, of specifying which graphics card (or "monitor") a particular BitMap should be allocated to.
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