tobiastimpe Posted January 24, 2012 Share Posted January 24, 2012 Hey guys, So I finally bought a new graphics card. Hoping I would get native support under Lion (latest), I went with the XFX Radeon HD 6870. When booting without GraphicsEnabler, I often get flickering instead of the desktop. I have tried my monitors on both DVI ports, 1 DVI and 1 HDMI and everything. Also, I would like to at least use triple monitors as I have one (plus a MiniDP -> DVI adapter) lying around anyway, but I heard it's not possible, true? Thank you guys in advance for such an awesome community helping me for like 3 years now. Tobias MB: ASUS P5N-D Monitors: Acer S243HLBMii Link to comment Share on other sites More sharing options...
TH3L4UGH1NGM4N Posted January 24, 2012 Share Posted January 24, 2012 Well there are many threads about the 6870 but I guess I could help out again start off by typing in terminal ioreg | grep ATY to see which FB you're loading to begin with then we'll continue from there. Link to comment Share on other sites More sharing options...
tobiastimpe Posted January 26, 2012 Author Share Posted January 26, 2012 So, it turns out I'm running Duckweed by default: (without GE) | | | | | +-o ATY,Duckweed@0 <class AtiFbStub, id 0x1000002ce, registered, matched, active, busy 0 (5083 ms), reta$ | | | | | +-o ATY,Duckweed@1 <class AtiFbStub, id 0x1000002cf, registered, matched, active, busy 0 (34 ms), retain$ | | | | | +-o ATY,Duckweed@2 <class AtiFbStub, id 0x1000002d0, registered, matched, active, busy 0 (44 ms), retain$ | | | | | +-o ATY,Duckweed@3 <class AtiFbStub, id 0x1000002d1, registered, matched, active, busy 0 (5 ms), retain $ I currently have my 2 monitors working fine, with one on HDMI and the other via MDP. But then again, I'd really like to run things like DVD-Player and GB. Also, I'd love it for my bootscreen to be nativer resolution (1920x1080). I tried putting in: <key>Graphics Enabler</key> <string>1920x1080x32</string> Thanks Tobias Link to comment Share on other sites More sharing options...
TH3L4UGH1NGM4N Posted January 27, 2012 Share Posted January 27, 2012 Okay great so your default FB is the same as mine duckweed. For your boot screen though it has to be the Graphics Mode key not Graphics Enabler that uses a boolean value such as Yes or No. An easier way to set these things is to use the Chameleon pref pane which I have attached to this post instead of having to manually edit all the time. Just go into the peripherals section and set the graphics mode like I did so. For GB DVD-player and some other apps to work you'll have to tick the Graphics Enabler on or off but the trade off is that you might lose multi monitor support so I normally just do without GB and dvd-player unless I want to bench something. Now for the triple monitor issue it’s more of an architecture issue you have to use an active adapter or converter in order to go beyond 2 monitors. An active adapter allows for independent signal to be passed through where it is actively converted (hence the name) where as using a typical dvi -> hdmi dongle is passive because there is no signal conversion going on just a straight pass through. Your card is more than able to go beyond two monitors but you’ll need to buy an active converter like so http://www.newegg.co...N82E16814999030 When you do get one handy test it out and see if the third signal is picked up without any editing if not then there’s a way to manually set the number of outputs for your fb. Chameleon.prefPane.zip Link to comment Share on other sites More sharing options...
tobiastimpe Posted January 27, 2012 Author Share Posted January 27, 2012 Oh, yeah, my bad, that was just a typo here when typing it into the forum But I would love a native resolution bootloader, can you (or somebody else) help me patch my GPU ROM to include a 1920x1080x32 VESA mode, since it ca only, for whatever reason, do 1920x1440 and not 1080 (from ?video). Also, the only problem I now get after setting the framebuffer and everything is that I have to click around and hit ctrl-shift-eject a couple of times before I get the normal desktop, otherwise I just get random junk on the screen. I've attached my GPU BIOS, so If anyone can patch it, or at least tell me how exactly I should do so, please do. I know about the other VESA modes thread, but I'm still trying to get my head around all this stuff. Tobias 6870DF_Unpatched.bin.zip Link to comment Share on other sites More sharing options...
lox72 Posted March 26, 2012 Share Posted March 26, 2012 Hey guys, So I finally bought a new graphics card. Hoping I would get native support under Lion (latest), I went with the XFX Radeon HD 6870. When booting without GraphicsEnabler, I often get flickering instead of the desktop. I have tried my monitors on both DVI ports, 1 DVI and 1 HDMI and everything. Also, I would like to at least use triple monitors as I have one (plus a MiniDP -> DVI adapter) lying around anyway, but I heard it's not possible, true? Thank you guys in advance for such an awesome community helping me for like 3 years now. Tobias MB: ASUS P5N-D Monitors: Acer S243HLBMii Solved http://www.insanelymac.com/forum/index.php?showtopic=275546&hl=6870&fromsearch=1 Link to comment Share on other sites More sharing options...
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