
blmiller at slingshot
Mar 23, 2010, 9:03 PM
Post #22 of 61
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The Asus en9400GT has DVI-I & DVI-D & component dongle connector. Can drive three independent screens. The later nVidia chipsets have better driver support & more hardware decode capability. I use the DVI-A to VGA cable to CRT (VGA input) & DVI-D cable to small LCD. The component output was just as flexible configuration as the VGA. The VGA was just a tidier solution. VGA is analogue RGB with separate H & V sync. SCART can connect composite, s-video & RGB+sync. Some (very few) SCART (crap spelt wrong) devices accept RGBs. SCART RGB sync can be combined on green ? or into s-video luminence ? Can make an adaptor to combine the sync signals & stuff into one of the s-video lines. DVI-I is DVI-D & DVI-A in same connector: can use adaptor to VGA & adaptor to HDMI. Normal 19 pin HDMI is single link only (fine for 1080p) & was speced by consumer electronics groups. DDWG DVI supports dual link speced from computer industry groups. If you a concerned about future connectivity then VESA Displayport connector is the way... VESA Displayport is DVI with all the nasty DRM stuff from HDMI built-in for our benefit. On 24/03/2010 2:15 p.m., Stephen Worthington wrote: > On Wed, 24 Mar 2010 09:50:30 +1300, you wrote: > > >> Hey everyone, >> >> Thanks for all your responses. You've all been very helpful. >> >> I've found a DVI to component cable, so I'll get an NVidia card with >> VPDAU and DVI output and connect to the component sockets on the TV. >> The video card will have HDMI as well, so I'm future proofed there. >> >> I've done a bit of searching about the TBS 6980 tuner card. Mixed >> messages about it working with MythTV, but I'll make sure I can return >> it if it is not suitable. This link says it should work >> http://www.tbsdtv.com/english/product/6980.html. That page even has a >> MythTV logo on it. I just really like the idea of having both tuners >> on the same card so it takes up less space inside the PC. I'll make >> sure the PC I choose has room for 2 individual tuners just in case. >> > Problem: The drivers listed on that page are for 2.6.32 kernel. The > current kernel in Ubuntu is 2.6.31 (2.6.31-20 at the moment), until > Mythbuntu 10.4 comes out at the end of April. So you may well run > into the same problem I seem to have at present with my new my TeVii > S470 DVB-S2 card, which is that the drivers seem to upgrade the Video > 4 Linux version (V4L), and this breaks things. I can not get MythTV > to use my three DVB-T tuners with the new drivers for installed. They > are usable in Kaffeine, but MythTV fails to tune them. And w_scan > does not work, saying it is incompatible with the new version. > > I am just trying out Mythbuntu 10.04 beta1 today, to see if the > pre-release MythTV 0.23 works with the new kernel and will run all my > tuners at once. But I am having problems getting it to work (it > really is rather alpha-ish, with various things obviously broken). > Mythbuntu 10.04 beta1 is using the 2.6.32-16 kernel currently. > > >> I know it would be preferable to have a backend system in the garage, >> or in the "Harry Potter" cupboard under the stairs, but while I'm >> still dealing exclusively with SD content, I think I'll just combine >> them in to one box in the TV cabinet. As I understand it, when I >> start dealing with HD content I'll need a gruntier box and maybe more >> storage. >> >> Now I just have to find the right PC and case to put it all in. >> > The basic problem with building a MythTV box is noise. One intended > for a bedroom needs to be extremely quiet. One in a lounge needs only > to be quiet. I built one for my mother just before Christmas, and I > kept it fairly quiet by using a Gigabyte M85M-US2H motherboard that > had builtin Nvidia 8400GS video (with no fan), and a Zalman ZM500-HP > power supply. The result is that the loudest sound from the box is > the hard disk (Seagate ST31000528AS) when it is doing something. The > CPU fan on the Athlon II X2 245 processor and the power supply fan > fade into the background in the lounge. The fans on normal Nvidia > graphics cards are rather noisy and would be quite noticeable and > annoying, which is why I also got an Asus "silent" model 8400GS card > for my own MythTV box in my bedroom when I updated it to use VDPAU. > The Gigabyte M85M-US2H motherboard does seem to still be available > from a small number of NZ retailers, but they may have just forgotten > to update their databases as it has disappeared from Ascent's web > site. I would recommend it for MythTV boxes. > > The 8400GS GPU is a little underpowered for using the higher > deinterlace modes, but I have not personally found the lower modes to > be a problem. Note that there seem to have been two versions of > 8400GS chips - the M85M-US2H uses the newer much better version, as > does my silent 8400GS: > > http://www.ascent.co.nz/productspecification.aspx?ItemID=9384472 > > The new version 8400GS chips seem to actually be derived from the 9000 > series GPUs, rather than the 8000 series. > > Warning: The M85M-US2H motherboard has DVI-D and HDMI outputs only. > There is also a D-Sub (VGA) connector for analogue monitors, but I am > not sure if you can get VGA to component converters in NZ, and if you > can they will not be cheap. The HDMI supports audio over HDMI. > > The Asus silent 8400GS card has DVI-I, D-Sub (VGA) and S-Video > outputs, and comes with an S-Video to component converter cable (which > I have never tried using). Since the component out is via an S-Video > connector, I would presume that it will produce YPbPr component > signals, not RGB. But I could not find anything in the documentation > to say for sure. I am using it with a DVI to HDMI cable, and running > the sound from the PC sound card over SPDIF to my hifi system, so I > can not say if it supports audio over DVI->HDMI. > > A number of people seem to be waiting for the arrival of silent GT220 > based cards, which should provide all the GPU needed to use the > highest deinterlace modes at a fairly cheap price. Given the > relatively low price of the silent 8400GS card, you could just get one > of them and see if it works for you, with the option of updating later > to a GT220 based one if lower deinterlace modes are a problem. > > >> Thanks >> >> David Kirk >> > _______________________________________________ > mythtvnz mailing list > mythtvnz [at] lists > http://lists.ourshack.com/mailman/listinfo/mythtvnz > Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/ > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.437 / Virus Database: 271.1.1/2765 - Release Date: 03/23/10 07:33:00 > >
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