Re: Radeon 8500 with TFT/DVI uses 60Hz modes only
Rainer Canavan [EMAIL PROTECTED] wrote: I doubt that you'll see improvements with more than 60 Hz on a TFT - even with video playback. I ran quite a lot of different TFT's (analog and DVI) on ATI Radeon7000/7500/9100 and to my experience you're best with 60 Hz, That probably depends on the display, and maybe even the input you use. I have an SGI 1600SW, and it makes a huge difference whether I run it with 50 or 60 Hz when viewing video. I believe there are displays that convert everything to 60Hz, so YMMV. I must admit that I've never tried below 60 Hz. What sort of difference did you find out going to 50 Hz - improvement ? BTW, I thought we were talking about increasing to _over_ 60 Hz ;-) Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
Re: Radeon 8500 with TFT/DVI uses 60Hz modes only
On Tue, Oct 07, 2003 at 07:10:25AM +, Martin Spott wrote: Rainer Canavan [EMAIL PROTECTED] wrote: That probably depends on the display, and maybe even the input you use. I have an SGI 1600SW, and it makes a huge difference whether I run it with 50 or 60 Hz when viewing video. I believe there are displays that convert everything to 60Hz, so YMMV. I must admit that I've never tried below 60 Hz. What sort of difference did you find out going to 50 Hz - improvement ? BTW, I thought we were talking about increasing to _over_ 60 Hz ;-) Hi Martin, I wanted to go above 60Hz to sync the panel refresh rate with the frame rate of the video source. With 25fps video, either 50Hz or 75Hz panel refresh rate could make a difference. But I don't really know, it just seems be smoother. Cheers, Patrick ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
Re: Radeon 8500 with TFT/DVI uses 60Hz modes only
I must admit that I've never tried below 60 Hz. What sort of difference did you find out going to 50 Hz - improvement ? BTW, I thought we were talking about increasing to _over_ 60 Hz ;-) Martin. I do get a significant improvement, and it gets very obvious with interlaced 50 field/s video. If you look at anything that moves smoothly over a few seconds, like the tickers at the bottom of news stations, scrolling credits etc, everything gets much smoother when screen refresh and video are somewhat synchronized. 48Hz makes PAL video nearly unwatchable. Rainer ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
Re: Radeon 8500 with TFT/DVI uses 60Hz modes only
Patrick Mau [EMAIL PROTECTED] wrote: I'd really like to use modes above 60Hz for video playback. Maybe this is completly wrong, but to me it seems that video streams with 25fps have less tearing with 75Hz refresh rates. I doubt that you'll see improvements with more than 60 Hz on a TFT - even with video playback. I ran quite a lot of different TFT's (analog and DVI) on ATI Radeon7000/7500/9100 and to my experience you're best with 60 Hz, Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! -- ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
Re: Radeon 8500 with TFT/DVI uses 60Hz modes only
On Sun, Oct 05, 2003 at 01:26:32PM +0200, Michel Dänzer wrote: Do you really need more than 60 Hz though (and if yes, what for?), given that 60 Hz is probably optimal for the panel, and it shouldn't flicker, or does it? Hallo Michel, thanks for your reply, because my first attempt didn't reach the list. I'd really like to use modes above 60Hz for video playback. Maybe this is completly wrong, but to me it seems that video streams with 25fps have less tearing with 75Hz refresh rates. But aside from that, I just wonderd why Windows can program those mode timings, although XFree just seems to see the 60Hz modes from DDC. That's why I included the DDC Information. If someone wants to comment on my remarks about video playback, I'd appreciate that. Thanks, Patrick ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
Re: Radeon 8500 with TFT/DVI uses 60Hz modes only
Two ways to change it, 1. use Option IgnoreEDID 2. use Option NoDDC and Option MonitorLayout TMDS, NONE With above two methods, you'll also need to provide the proper timings for your panel, either from HorizSync and VertRefresh or from a Modeline. Since there are some panels having problem with their non-native modes, the driver uses the internal scaler inside Radeon chips (RMX - Ratio Matrix eXpension) for these modes by default. I'm not sure what kind of tearing you see with the playback on [EMAIL PROTECTED], changing this may or may not help. You can also try to use [EMAIL PROTECTED] mode (the native mode of your panel) and set the color depth to 16. Hui - Original Message - From: Patrick Mau [EMAIL PROTECTED] To: Michel Dänzer [EMAIL PROTECTED] Cc: Patrick Mau [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Sunday, October 05, 2003 8:08 AM Subject: Re: Radeon 8500 with TFT/DVI uses 60Hz modes only On Sun, Oct 05, 2003 at 01:26:32PM +0200, Michel Dänzer wrote: Do you really need more than 60 Hz though (and if yes, what for?), given that 60 Hz is probably optimal for the panel, and it shouldn't flicker, or does it? Hallo Michel, thanks for your reply, because my first attempt didn't reach the list. I'd really like to use modes above 60Hz for video playback. Maybe this is completly wrong, but to me it seems that video streams with 25fps have less tearing with 75Hz refresh rates. But aside from that, I just wonderd why Windows can program those mode timings, although XFree just seems to see the 60Hz modes from DDC. That's why I included the DDC Information. If someone wants to comment on my remarks about video playback, I'd appreciate that. Thanks, Patrick ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
