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Have you even tried using just the HD6950 in windows?
Yes, with just one screen. Setting up two monitors on one GPU would require me to purchase new adapters.
Quote:
Originally Posted by cascade9
Netflix doesnt use that much GPU power, and its quite likely that running both monitors from the HD 6950 will be just as fast as running 1 x VGA from the 6950 and 1 x VGA from the intel onboard video. It might even be faster, the intel 'GPU' is mostly CPU driven...
To a point. The Intel GPU in my system is really a hardware GPU and not integrated with the CPU. As far as overall specs go, it's not really much for gaming. The biggest performance hit comes from the shared system memory. It does do a few games nicely. Having the configuration I do in Windows really works out well for me. But i only use windows for games and video editing. the other 99% of the time I'm running under Slackware 14.0.
Quote:
Originally Posted by cascade9
As far as linux goes, I would NOT use this intel + AMD setup. You'll have to use the open source ATI/AMD drivers, so you'll be cutting performance and increasing the HD6950 heat output and power consumption.
I guess I should probably note that the Intel GPU is a
Integrated Intel GMA X4500.
Yes, with just one screen. Setting up two monitors on one GPU would require me to purchase new adapters.
At worst you would need a Displayport-> VGA adapter.
Quote:
Originally Posted by mpyusko
To a point. The Intel GPU in my system is really a hardware GPU and not integrated with the CPU.
GMA 4500 is les of a 'GPU' than the newer intergrated onto the CPU intel video. I wasnt saying its an intergrated onto the CPU GPU, I was saying its a very weak 'GPU'. A 8400GS (ancient and slow compared to the HD6950) can run rings around GMA 4500.
Yes, I get that. But sometimes it's not so much what you should do, but more of what you can do. Or more appropriately, can you do. Tweaking and toying leads to innovation.
It's so close to being right, it's hard for me to accept that it can't be done. I feel like i'm missing a setting in some file somewhere. For instance, when I query the monitor, it says $DISPLAY is undefined. So I define it to localhost:0.0, but it doesn't change anything. And in another file it asks which displays to allow X to run on, the default config file is for single display systems, and says I need to define more for multiple display system,s but I'm not sure how to define them.
In the meantime I did a sanity check by installing Debian Wheezy/testing to a USB Hard Drive and trying to configure the two displays with the radeon driver, and it didn't work there either. This system is Slackware 14, 64/multilib with the latest drivers from AMD.
In the meantime I did a sanity check by installing Debian Wheezy/testing to a USB Hard Drive and trying to configure the two displays with the radeon driver, and it didn't work there either.
Did you hook both monitors up to the radeon video card?
As for your test using the radeon driver and intel driver... Simply switching your xorg.conf file from fglrx to radeon is not enough. As I said above, the fglrx driver replaces part of the Xorg system. In addition, because fglrx is installed, the radeon kernel module isn't getting loaded with KMS enabled. You need to uninstall fglrx to properly test running both GPUs with their open source drivers.
No. I kept the connections the same, I just used a clean install with no fglrx drivers installed. Just the latest Intel and Radeon drivers and the same xorg.conf file I have been using. No success there either. Both displays are identical 17" LCD 1280x1024@75Hz monitors.
I'm thinking I might just break down and buy that cable that was mentioned earlier. What is it exactly? I need two 15 pin D-sub ports.
If the HD6XXX cards still had 2 x DVI-I (like the 5XXX cards) you could just use both the DVI ports with cheap DVI->VGA adapters. But the 6XXX cards have one DVI-I and one DVI-D (digital only) so you need to use one of the other video ports for the 2nd analog VGA.
This is my GPU....http://www.sapphiretech.com/presenta...pid=1530&leg=0
I'll be honest, I'm really not sure what the differences in all these ports are. All I know is I have two DVI-VGA adapters and even when I plug both monitors into the one card, it still won't drive both. In fact the only way I can get both running is to connect one to the GMA X4500 and one to the HD 6950 under Win7.
LOL, the short explaination of why you cant use both the DVI ports with DVI-> VGA adapters is in the post above...
VGA is analog. DVI can have both analog and digital signals (DVI-I) or digital only (DVI-D). HDMI is DVI digital + audio. Display port is digital. Since your card has 1 x DVI-I and 1 x DVI-D you need to convert one of digital ports to analog VGA.
Unless your monitors have DVI inputs as well as VGA, in which case a DVI cable will work.
So essentially I'm better off buying a new digital monitor.... or two. I was just really hoping I could get this to work. In Win the GMA X4500 is the extended display working seamlessly with the HD6950. Identical resolutions and all. Oh well maybe down the road it will get better.
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