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Old 05-16-09, 12:10 PM   #1
aaneiros
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Default Thinking of dumpig my 8200 IGP mobo

Hi. I've been trying to play 1080p material on my jetway 8200-based motherboard. The result is I can't play any 1080p videos with an acceptable quality (video stutters, audio-video aout of synch, framedrops, artifacts, etc).

So now I'm thinking of swapping my current mobo for another one with the 9300 IGP and, before doing so, have a couple of questions:

Has anyone in here been able to play 1080p material on a nvidia 8200 IGP ? I, mean, all types of movies, including those with the higher bitrates.

Is it that nvidia linux drivers do not support this IGP well enough yet or that the IGP's limit has been reached? Driver limit or hardware limit?

And, if the problem is the driver... is nvidia driver ever going to support playing 1080p material decently enough?

In other words, should I consider my 8200 IGP useless for 1080p??
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Old 05-16-09, 02:43 PM   #2
Thunderbird
 
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Default Re: Thinking of dumpig my 8200 IGP mobo

One crucial thing are you using vdpau or not? You must use it for 1080p playback to be smooth. Someone recently mentioned that h264 1080p works using vpdua on a p3 600 + geforce 8400 (PCI), yes PCI. So I would expect your gpu to be usable as well.
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Old 05-16-09, 05:55 PM   #3
aaneiros
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Default Re: Thinking of dumpig my 8200 IGP mobo

Yes, I'm using vdpau. No problems with 720p but lots of them with 1080p :-(
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Old 05-19-09, 06:24 AM   #4
jpterj
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Default Re: Thinking of dumpig my 8200 IGP mobo

Quote:
Originally Posted by aaneiros View Post
Yes, I'm using vdpau. No problems with 720p but lots of them with 1080p :-(
I am not asolutely sure about this but I suspect that this might be a memory bandwith issue.

I have an Asus M3N78-EM motherboard with 8300 IGP. This worked fine for some DVB-S2 h.264 1080i satellite channels but not for other.

I then bought a 8400GS graphics card which I think is based on the same chipset as the 8300 IGP. This worked fine for all the channels. I have since replace it with a 9500GT so I can use advanced 2x deinterlacing on 1080i.
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Old 05-19-09, 10:22 AM   #5
aaneiros
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Default Re: Thinking of dumpig my 8200 IGP mobo

Quote:
Originally Posted by jpterj View Post
I am not asolutely sure about this but I suspect that this might be a memory bandwith issue.
That might be the problem. I'm not sure tough.

I'm using an AMD cpu (one of those energy efficient ones; forgot the exact model) which I keep at its minimum frequency with powernowd. A user in another forum suggested throttling the cpu to its maximum when playing 1080p stuff to increase performance. I've just tried it an it certainly helps; I mean, the video still has some hiccups here and there but audio and video keep in sync, contrary to what happened before.

I guess I'll keep waiting for nvidia engineers to improve linux drivers for some time and, if the situation doesn't get any better, I'll buy more capable hardware.
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Old 05-19-09, 11:11 AM   #6
Stephen Warren
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Default Re: Thinking of dumpig my 8200 IGP mobo

Your problem is *probably* due to limited memory bandwidth when the CPU is running at its lowest clocks (since the memory clock is also lowered at that level). The solution is probably to limit how low the CPU is clocked, to avoid clock rates where memory clock is also lowered.

See this thread for more details:
http://www.nvnews.net/vbulletin/show...=131715&page=3
especially post #39.
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