Problems with Nvidia GEForce 8600GS - again...
Hi,
I spent the whole day trying to get this thing working as it should to no avail :
- installed latest Forceware drivers
- installed Forceware drivers that are said to be working on this forum (178.24)
- installed latest Forceware drivers without monitor from remote desktop (installation hangs in a forever loop, but at least driver are installed)
- re-installed latest Forceware drivers with arcade monitor attached over the previously installed ones
- tried to force monitor detection from Nvidia control panel
- updated Windows and all drivers to latest version
None of the above solved the boot problem : without a PC monitor attached at least once, the card never displays a 15 kHz video after boot. It is enough to hook up a PC monitor and change resolution by launching MameWah or using quickres, then a very good 15 kHz video is displayed.
I'm very frustrated at this point : either I am missing something/doing something wrong (please someone tells me what) or the Nvidia GeForce 8600GS PCI-E should be stated as NOT working on this forum in "Getestete Grafikkarten" thread, page 4. :(
Matteo
Problems with Nvidia GEForce 8600GS - Dongle
Zitat:
Zitat von
SailorSat
Hm... Guess you'll need the dongle after all.
Hi,
I've sent you a private message about the dongle.
Thanks,
Matteo
Problems with Nvidia GEForce 8600GS - again...
Zitat:
Zitat von
SailorSat
Hm... Guess you'll need the dongle after all.
OK, while I am waiting for the EDID dongle to arrive via mail I spent some time configuring stuff and doing some other tests. I found out that if I change the screen resolution from 640x480@60 to 640x288@60 I am able to get a picture on the arcade monitor without attaching the PC monitor at startup.
On the test bench I was using a Intervideo 14" that displayed a very good picture with 640x480@60. When I moved the stuff inside the arcade machine, the Hantarex Polo 28" displayed a horrible picture (a lot of flickering, unreadable text) so I tried to switch to a non-interlaced picture and I found out that.
Is there anyone else who is getting a very bad picture on Hantarex Polo 28" with 640x480@60 at 15 kHz ? Is this common or could it be my monitor in need of a fix ?
Can this be a problem related to interlaced resolutions only ? :headbonk:
Matteo
Problems with Nvidia GEForce 8600GS - again...
Zitat:
Zitat von
SailorSat
Can't tell for sure.
My old Hantarex MTC 9110 worked fine, so did my Polo 25".
On my current cab theres a Polo 16/9 33" that has problems with interlaces resolutions. But more like the fields are "switched" meaning instead of line 1-2-3-4 I see 2-1-4-3 etc.
As for that... Well If you get a good 640x480 on your intervideo I'd take a look on your hantarex.
OK, I'll take a look at my Polo 28", I'll check the power supply and the capacitors.
As for the fact that my GeForce 8600GS works even without a dongle at 640x288, do you have an explanation ?
Note that it works only if I don't shutdown Windows properly (hard power off of the PC - i.e power fail).
Thanks,
Matteo
Problems with Nvidia GEForce 8600GS - again...
Zitat:
Zitat von
italiandoh
OK, I'll take a look at my Polo 28", I'll check the power supply and the capacitors.
As for the fact that my GeForce 8600GS works even without a dongle at 640x288, do you have an explanation ?
Note that it works only if I don't shutdown Windows properly (hard power off of the PC - i.e power fail).
Thanks,
Matteo
OK, I had some time to work on this. I changed all electrolytic capacitors and checked all main supply voltages on the Polo, and they all look fine. The monitor works perfectly using a standard 15 kHz Jamma board (Street Fighter EX).
When it comes to my Mamecab, I get a unacceptable vertical flicker when using interlaced resolutions. The flickering goes away if I reduce the vertical size of the picture to near the minimum (half vertical size) or if I stretch the image vertically well over the cinescope vertical size. Plus I get a black screen when trying to display any resolution below 300 horizontal lines. Is this normal for a GeForce 8600GS ? If these problems cannot be fixed, I'll buy a ATI video card.
Please help if you can. Thanks. :(
Matteo