Digital to analog video converters not working for GDM-FW900
Posted: 29 Mar 2017, 18:13
So the new gen of video cards will no longer support analog out since they've removing DVI entirely (and axed analog DVI on the GTX 1080).
Because of this, I can't use the new video cards on my Sony GDM-FW900 CRT. I've tried three different digital to analog converters, one of them being HDMI to VGA and two of them being DisplayPort to VGA, and I've gotten some poor results.
The HDMI to VGA converter did not recognize the 16:10 format of 1920 by 1200, and so I got a weird 4:3 cutout of 1920 by 1200 when trying to use that resolution (the sides were missing). The refresh was also limited to 60hz (I could push it to 62hz before loss of signal). The DisplayPort to VGA converters both had a behavior where I was getting a 1280 resolution in all cases instead of 1920 (the CRT detected 1280 when I was supposed to be in 1920), and the image appeared to be upscaled to 1920 in a jagged mess of approximated graphic output. Both DP to VGA adapters were using the same converter chipset (Analogix ANX9833), so it makes sense they would have the same behavior. These two adapters could do at least 85hz, but they were stuck in 1280 res so that isn't much of an accomplishment.
This is a real longshot since very few people need to convert digital output to VGA at 1920 by 1200, but if anyone could offer any suggestions/advice, that would be great.
Because of this, I can't use the new video cards on my Sony GDM-FW900 CRT. I've tried three different digital to analog converters, one of them being HDMI to VGA and two of them being DisplayPort to VGA, and I've gotten some poor results.
The HDMI to VGA converter did not recognize the 16:10 format of 1920 by 1200, and so I got a weird 4:3 cutout of 1920 by 1200 when trying to use that resolution (the sides were missing). The refresh was also limited to 60hz (I could push it to 62hz before loss of signal). The DisplayPort to VGA converters both had a behavior where I was getting a 1280 resolution in all cases instead of 1920 (the CRT detected 1280 when I was supposed to be in 1920), and the image appeared to be upscaled to 1920 in a jagged mess of approximated graphic output. Both DP to VGA adapters were using the same converter chipset (Analogix ANX9833), so it makes sense they would have the same behavior. These two adapters could do at least 85hz, but they were stuck in 1280 res so that isn't much of an accomplishment.
This is a real longshot since very few people need to convert digital output to VGA at 1920 by 1200, but if anyone could offer any suggestions/advice, that would be great.