First post, by LSS10999
I've been experimenting with a Quadro FX 3000 (Geforce 5900 equivalent), to see if I could make it output something interesting using my current monitor (ASUS XG27UQR), which supports up to 120Hz/144Hz refresh rate. I'm using a DVI-HDMI adapter and a HDMI cable to connect the video card to my monitor, and by default the video card outputs using 1280x1024 at 60Hz according to the monitor's OSD.
With the help of these guides I'm able to force a 75Hz output using a HDMI EDID dongle containing a modified EDID based on the one dumped from my monitor's HDMI port (I used an external EDID reader/writer board for the purpose, and the dongle I'm using turned out to be writable). Should note that this forced refresh rate also applies to Windows 9x (ME in my case) for most resolutions I could use including 1280x1024. Even the VBEMP driver I'm using for WinNT 3.51 can output at 75Hz using this modded dongle.
-- Outputting 720x400@70Hz with the ATi R300 DVI output in DOS
-- 70Hz in pure DOS at 1600x1200 (or other) over DVI on an old card (FX5900) with modern monitor is possible
However, I'm hitting a wall trying to get more resolutions working on 9x. None of the widescreen (16:9) resolutions I'd like to use work, only standard resolutions are working (4:3 ones, as well as 1280x1024). The monitor reports NO SIGNAL rather than OUT OF RANGE when trying to use a widescreen resolution. There's one particular resolution that works which looks better, 1280x768 (5:3), but it appears to be non-native as the monitor's OSD reports 1280x1024 at 60Hz, even with the modded dongle, for this particular resolution.
I'm currently using the 77.72 Win9x driver. This driver version contains a section for setting custom resolutions (whereas the unofficial 82.69 does not), but it doesn't seem to function at all. It simply complains that the custom resolution cannot be added. The results are the same for both 77.72 and 82.69 in regards to usable resolutions, with or without the modded dongle.
I think this is mostly an issue with the Win9x driver itself as on the same system with WinXP using the 169.96 driver, I have no problems setting the 1920x1080 resolution, and I can even add a custom one for 70Hz (75Hz doesn't seem to work as the monitor complained OUT OF RANGE when testing).
So I'm wondering whether widescreen resolutions are really working on Win9x or not. I've been reading similar posts but the reports are mixed (worked for some but not others). Maybe it depends on the card or the monitor used.