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Old 05-28-2013, 07:36 AM   #16
mpyusko
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Quote:
Originally Posted by cascade9 View Post
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 View Post
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 View Post
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.
 
Old 05-28-2013, 08:53 AM   #17
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Quote:
Originally Posted by mpyusko View Post
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 View Post
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.
 
Old 05-28-2013, 09:38 AM   #18
mpyusko
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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.
 
Old 05-28-2013, 10:17 AM   #19
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Before continuing, you really need to get rid of fglrx/catalyst and stick with the open source driver.

Adam
 
Old 05-28-2013, 05:47 PM   #20
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I try switching to the radeon driver and it says it loads in the xorg.0.log file, but it doesn't seem to do anything with it.
 
Old 05-28-2013, 05:55 PM   #21
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Can we see the Xorg log file?

Adam
 
Old 06-01-2013, 07:37 AM   #22
mpyusko
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See attached. here is the current xorg.conf
Code:
bash-4.2$ cat /etc/X11/xorg.conf
Section "ServerLayout"
        Identifier     "X.org Configured"
        Screen      0  "ATI0" 0 0
        Screen      1   "Screen1" RightOf "ATI0"
        InputDevice    "Mouse0" "CorePointer"
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
        ModulePath   "/usr/lib64/xorg/modules"
        FontPath     "/usr/share/fonts/local"
        FontPath     "/usr/share/fonts/TTF"
        FontPath     "/usr/share/fonts/OTF"
        FontPath     "/usr/share/fonts/Type1"
        FontPath     "/usr/share/fonts/misc"
        FontPath     "/usr/share/fonts/CID"
        FontPath     "/usr/share/fonts/75dpi/:unscaled"
        FontPath     "/usr/share/fonts/100dpi/:unscaled"
        FontPath     "/usr/share/fonts/75dpi"
        FontPath     "/usr/share/fonts/100dpi"
        FontPath     "/usr/share/fonts/cyrillic"
EndSection

Section "Module"
        Load  "FGL.renamed.libglx"
        Load  "glx"
        Load  "extmod"
        Load  "record"
        Load  "dri2"
        Load  "dbe"
        Load  "dri"
EndSection

Section "ServerFlags"
        Option      "Xinerama" "off"
EndSection
                                                                                                                      
Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "kbd"
EndSection

Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "auto"
        Option      "Device" "/dev/input/mice"
        Option      "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
        Identifier   "Monitor1"
        VendorName   "Monitor Vendor"
        ModelName    "Monitor Model"
        Option          "DPMS"  "true"
EndSection

Section "Monitor"
        Identifier   "aticonfig-Monitor[0]-0"
        Option      "VendorName" "ATI Proprietary Driver"
        Option      "ModelName" "Generic Autodetecting Monitor"
        Option      "DPMS" "true"
EndSection


Section "Device"

        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "SWcursor"                  # [<bool>]
        #Option     "kmsdev"                    # <str>
        #Option     "ShadowFB"                  # [<bool>]
        Identifier  "card1"
        Driver      "intel"
        BusID       "PCI:0:2:0"
EndSection

Section "Device"
        Identifier  "aticonfig-Device[0]-0"
#       Driver      "fglrx"
        Driver      "radeon"
        BusID       "PCI:1:0:0"
EndSection

Section "Screen"
        Identifier "Screen1"
        Device     "Card1"
        Monitor    "Monitor1"
        SubSection "Display"
                Viewport   0 0
                Depth     1
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     4
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     8
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     15
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     16
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
EndSection

Section "Screen"
        Identifier "ATI0"
        Device     "aticonfig-Device[0]-0"
        Monitor    "aticonfig-Monitor[0]-0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
EndSection
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.
Attached Files
File Type: log Xorg.0.log (48.2 KB, 2 views)

Last edited by mpyusko; 06-01-2013 at 07:41 AM.
 
Old 06-01-2013, 08:09 AM   #23
adamk75
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What do you mean by:

Quote:
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.

Adam
 
Old 06-01-2013, 03:15 PM   #24
mpyusko
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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.
 
Old 06-04-2013, 05:49 AM   #25
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Quote:
Originally Posted by mpyusko View Post
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.
Display port or mini display port to VGA adapter. Which one you will need depends on the outputs of your card.

http://www.startech.com/AV/Displaypo...verter~MDP2VGA
http://www.newegg.com/Product/Produc...82E16882203129

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.
 
Old 06-04-2013, 09:23 AM   #26
mpyusko
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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.
 
Old 06-05-2013, 04:08 AM   #27
cascade9
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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.
 
Old 06-05-2013, 09:04 AM   #28
mpyusko
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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.
 
Old 06-06-2013, 04:53 AM   #29
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Quote:
Originally Posted by mpyusko View Post
So essentially I'm better off buying a new digital monitor....
You do have other options.

If you dont want to buy a display port->VGA adapter, and dont want to even try removing fglrx (like adamk75 suggested) then yes.
 
  


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