hello, I have a NVIDIA Quadro NVS 290, which is similar to the 8400 GS and I think the same thing happens to us, after installing several kext (titan, nvinject, nvdarwin, natita ...) I can change resolutions but the picture is sharp, pixelated out as horizontal stripes. I am Spanish and English is not much but I think you got it all. you could get the problem? and hopefully if I can help jeje

Hello Pipe!

It would seem from what you're saying that we are experiencing the same problem, but with different cards. At this point, I am completely lost about what to do or what may be causing it. I do thank you for responding, so now we at least know that other people are having the same problem.

I'll assume it's not caused by dual monitors, as booting with only 1 monitor from either the VGA or DVI outputs still causes the artifacts. My only thoughts for the cause would have to do with how old my motherboard is.

I am currently running Kalyway on my Inspiron 1525, so my actual Mac fix has been sated for the moment
I would still like to figure out what would be causing this though, just for curiosities sake. Also as it will undoubtedly be helpful for anyone else who is experiencing these same artifacts.

May I ask real quick though, do you have QE/CI enabled? I ask this because I can't seem to enable it, and am curious if having QE/CI running would fix the problem.

Hello.
I do not speak English and I have to use a translator to translate the messages into Spanish but more or less understand the post. I'm honest because if you do not know what is QE / CI. I have a HP 5700 with a small factor graph with internal external because I can not boot or installation dvd. The external graphics card is a Quadro NVS 290 for HP that has a DVI-I to connect to dual VGA cable. I come to the facility and have 1024x768 video resolution, when I install the Titan, Nvinject, NVenablers, etc and I can switch to other resolutions, but the stripes appear pixelated. From what I've seen this plot and the 8400 GS are similar. I hope we can find some solution but I'm almost overcome. A greeting

Hi, I have the same problem, horizontal artifacts appear all over the screen whenever a window is opened or anything of the sort. Although it doesn't stop me using my Hackintosh it is incredibly annoying. It doesn't seem to be a common problem either as this seems to be the only thread I can find via google relating to it atall in any depth.

If you make any progress atall I would love to know.

System -
Intel core Duo Quad q6600
2x Geforce 8800gt
4gb (2x2gb) DDR Ram
Asus P5NT-Deluxe Motherboard
Netgear Wifi (forgotten the model No, Atheros chipset)

hey there i have the nvidia 8400gs 512mb card and i have no problems i used ideneb 10.5.8 lite edition and used the NVenabler for the 512mb card everything works great.maybe try that.

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ideneb OSx86 10.5.8 lite
acer aspire m1100
amd athlon 64bit dual core 4400+
4gig of ddr2 ram at 800mhz
320gig hd
1ide dvd rom/cdrw and 1 sata dvd/rw drive
22in insignia lcd tv/monitor.
nvidia 8400gs 512mb