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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Sun Aug 09, 2009 2:52 pm Post subject: Powerstrip completely hosed with ATI 4890!? |
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So, I just upgraded to a Radeon 4890 in my HTPC. The version of powerstrip I was running before apparently won't do custom timings with the 4870+, so I grabbed the new version.
After noticing a lot of wobbliness and blurriness, I realized that it was saying it was running 72i but really running 130i! And any other resolutions were the same - resetting to 60i with windows had powerstrip saying it was 16hz... 48p in powerstrip sent 80p to the projector. It doesn't even seem to be a linear ramp, though I couldn't be bothered to calculate it.
Anyone know what's up with this? I don't particularly want to go back to the 4850 as I do 3D stuff on the HTPC too, but not having custom timings is a deal-breaker. Are there any other methods for generating custom timings on an ATI? Am I better off switching for a new GTX from one of my work machines and using nV's custom timings?
Argh!
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Sun Aug 09, 2009 5:40 pm Post subject: |
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I had problems running 1080i with powerstrip. Also when I tried to do custom resolutions with my ati 4350 it would crash and bsod alot. I eventually just stuck with the ati control panel and set my display to a sony gdw-f900 or something like that. It gave me a ton of resolutions to pick from after that and works beautifully. Hope this helps you out.
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Sun Aug 09, 2009 6:23 pm Post subject: |
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Decided to see if there was a newer version than I grabbed last week - and lo, Entech did release a new build on August 5th. And behold rejoicing - for verily this build did fix the aforementioned refresh rate problem.
Now I just need to figure out what it is about my timings that means I have to swap randomly between + and - vsync a few times when I turn on the PJ to get vertical hold. Doesn't matter which I end up with - I just have to change 'em a few times to poke the PJ. Huh. That kinda puts a crimp on the ol' "make it so your wife can run it" thing... "OK, honey - Media Portal is up and running, and all you have to do is pick the movie you want to watch! Except when you turn on the PJ, go to the system tray and RIGHT CLICK on the powerstrip icon. No, that one. Now click on 'configure' and now click on 'timings', and now click on + and - a few times... I don't know, a few!"
Heh.
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Mon Aug 10, 2009 2:16 am Post subject: |
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That sounds more like a projector issue...
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Mon Aug 10, 2009 3:21 pm Post subject: |
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| Mark_A_W wrote: | | That sounds more like a projector issue... |
Man, that's not what I want to hear. I don't have it with any progressive modes... I suppose I ought to try some other res's/timings to see if all interlaced modes suffer the problem. I'm really liking running 72i - the interlacing doesn't seem more pronounced than 96i, and it's significantly sharper (despite it seeming like that shouldn't be the case). 48p is far less sharp, and I don't think 36p is a great idea... 
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Mon Aug 10, 2009 8:55 pm Post subject: |
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perisoft, do you notice an improvement in picture quality running at rates divisible by 24? I'm running 60hz right now and it seems to be just fine. wondering if using powerstrip to tweak it more will improve it or not. Most of the media I'm running is BD right now which I believe is all 24fps.
thanks!
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Mon Aug 10, 2009 9:39 pm Post subject: |
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| perisoft wrote: | | Mark_A_W wrote: | | That sounds more like a projector issue... |
Man, that's not what I want to hear. I don't have it with any progressive modes... I suppose I ought to try some other res's/timings to see if all interlaced modes suffer the problem. I'm really liking running 72i - the interlacing doesn't seem more pronounced than 96i, and it's significantly sharper (despite it seeming like that shouldn't be the case). 48p is far less sharp, and I don't think 36p is a great idea... |
Well...I could be wrong.
With a NEC, Doug always said to use NEG NEG sync, and when you look at a video waveform on a Scope, it makes sense - the sync pulses are much more obvious.
I'd try NEG NEG and see how you go.
What projector do you have?
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Tue Aug 11, 2009 2:41 pm Post subject: |
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| Mark_A_W wrote: |
Well...I could be wrong.
With a NEC, Doug always said to use NEG NEG sync, and when you look at a video waveform on a Scope, it makes sense - the sync pulses are much more obvious.
I'd try NEG NEG and see how you go.
What projector do you have? |
BG808s - and here's the odd thing: Everyone says that negative sync is necessary for Barcos to work right, but mine doesn't seem to give a hot god damn whether it's +h, +v, -h, -v, or composite. I'm using Port 5, and I understand that has some effect (as well as quality vs. port 3, but not as much on the s?) but whatever the reason, it just doesn't seem to matter.
I'll give NEG NEG a shot and see whether it retains sync after power cycle. Could be it'll run with NEG POS or POS POS etc but doesn't like to come up that way, I guess.
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Tue Aug 11, 2009 4:48 pm Post subject: |
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On my BG808 I'm not using negative sync either, works straight into port 3 from the htpc using ati catalyst drivers.
Perisoft, do you notice a difference with port5 vs port3, or with your refresh divisible by 24?
Thanks!
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Tue Aug 11, 2009 5:06 pm Post subject: |
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| akajester wrote: | On my BG808 I'm not using negative sync either, works straight into port 3 from the htpc using ati catalyst drivers.
Perisoft, do you notice a difference with port5 vs port3, or with your refresh divisible by 24?
Thanks! |
I haven't run port3 since the first days I had it, with a cobbled cable and no setup. So I don't know.
There's a MASSIVE MASSIVE MASSIVE difference running 48p/72i/96i -assuming I'm running reclock-. It goes from watching a movie on my computer to just watching a movie. I'd never ever go back.
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Tue Aug 11, 2009 8:59 pm Post subject: |
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Maybe I should give powerstrip another try then, thanks for the info!
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