On Mon, Jul 20, 2009 at 5:08 PM, Mark Knecht<[email protected]> wrote: > On Mon, Jul 20, 2009 at 4:11 PM, Alex Deucher<[email protected]> wrote: >> On Mon, Jul 20, 2009 at 7:00 PM, Mark Knecht<[email protected]> wrote: >>> Hi, >>> I'm wondering how I determine what resolutions are supported using >>> xf86-driver-ati with TVOut turned on? My machine is an older Asus >>> Pundit-R with an ATI IGP9100 chipset. I have the Open Source driver >>> running and it's currently set to 800x600 (recommended on the Xorg >>> site) and I'm getting a pretty good picture compared to the older >>> closed-source ATI driver. Big improvement on the noise though. The old >>> ATI driver used a lot of CPU and made the fans run at high speed. So >>> far your Open Source driver doesn't seem to kick the fans up at all so >>> thanks for that. >>> >>> I've read on the web that S-video was inherently limited to >>> 720x480. Is that true? Does the IGP9100 support that sort of >>> resolution? This machine is hooked only to a TV and only used for >>> MythTV so there are no other considerations other than getting a good >>> picture a few hours a day. >> >> tv-out always outputs native tv timing (NTSC or PAL, etc.). The >> tv-out block has a scaler the downscales the desktop image to the >> native tv timing. In theory you can scale any mode with the >> appropriate timing, but at the moment, the driver only supports >> 800x600. >> >> Alex >> > > Alex, > Thanks for the response. Let me see if I understand it correctly. > > 1) My MythTV backend server is tied to an HD Homerun digitizer and the > program is recorded on the backend at whatever resolution it comes in > on the cable, but let's assume it's 1080i just to make things clear. > > 2) My MythTV frontend requests to play the program and it's sent over > my network, probably still at 1080i. > > 3) The frontend program locally converts the program from 1080i to > either a) the resolution MythTV is set to play at or b) the screen > resolution. Those two may or may not be the same but I assume in my > case they are and it's currently 800x600. > > 4) Whatever the resolution is coming out of MythTV then the radeon > driver & TVOut hardware in the radeon chip then convert to whatever > X-video can actually handle which is something like 720x480? > > If that's fundamentally correct then at least would I be burning > less power or requiring less of the driver if I set the X11 screen > resolution to the same thing as S-Video? > > Thanks much, > Mark >
Or the alternative is that none of that matters because the OS radeon driver must be set at 800x600 or it doesn't work with TVOut. I guess that's what you are saying. Thanks, Mark _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
