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dlp rgb doesn't display full brightness range

post #1 of 13
Thread Starter 
dunno if this is the right forum, but as i'm using a minimac w/eyetv & homebrew f/w dvr...my minimac is hooked up to my samsung dlp via rgb (hdmi has unacceptable overscan)-: apparently the dlp's brightness range is less than the minimac's rgb range:-[ and changing the minimac's display profile, framerate and resolution didn't help...anybody got any suggestions?

pix of the issue @ http://wibles.webhop.net/toms/stuff/dlpRGBdisplayweirdness
post #2 of 13
Quote:
my minimac is hooked up to my samsung dlp via rgb (hdmi has unacceptable overscan)

Overscan that the "underscan" slider bar that Apple added a few years ago to Display preferences couldn't fix?

When you connect over HDMI are you offered "1080p" as a resolution choice and is the underscan slider bar displayed?
post #3 of 13
Thread Starter 
no, only an overscan checkbox, also unsat: unchecked, there's an inch of black on all sides:-( and when checked, a good 3inches is cut off all sides, totally unsat...but the colorbars are visible;-\ and text is fringed...hdmi is definitely inferior...see the pix i added

i should mention that i'm stuck @10.6.8:

Macmini1,1
Intel Core Duo
1.66 GHz
Edited by airdrummer - 11/17/12 at 6:10am
post #4 of 13
Thread Starter 
good news!!! after swapping hdmi in/out, console shows a batch of sys.prefs errors, but the display is fixed!!!
thanx;-)

unfortunately, bluetooth is now mia, refuses to turn on...wtf!?!?!
post #5 of 13
Thread Starter 
bluetooth came back with a powercycle...but now the colorbars are gone again:-( i ****in' give up;-\
post #6 of 13
Quote:
no, only an overscan checkbox

Macmini1,1
Intel Core Duo
1.66 GHz

that explains it airdrummer, your Mini is too old to have the underscan slider bar, that's only on the June 2010 models and newer. But that would've cleared your issue right up, better than, say, any overscan adjustments you could have made in XBMC.

Back in the day I had a 2.0 Core 2 Duo Macbook with the same GMA950 as you for a brief time, that GMA950 really underperformed in terms of home theater and EyeTV and I couldn't wait to get rid of it...the machine you have is even more of a dinosaur and I suspect you'll have problems with it and EyeTV even if you were driving a 720p HDTV.

You're obviously trying to give things a go with a 6 year old Mini and 6(?) year old DLP, and I hope you don't get too frustrated trying to get it to work. But things do pick up considerably with the 2010 models and are just fine playing back fullsize bluray rips. When you do upgrade, keep that 1.66 Mini around as an always on iTunes home sharing media server, there's a lotta good life left in it and old Minis are perfect servers.
post #7 of 13
Thread Starter 
so u recommend a Macmini4,1 then? maybe santa will b nice 2 me;-)

what's aggravating is the fact that my h/w has been working fine for the last 6 yrs, and now the latest s/w is causing problems...mebbe i'll just go back to my g4;-)
Edited by airdrummer - 11/21/12 at 4:14am
post #8 of 13
Quote:
what's aggravating is the fact that my h/w has been working fine for the last 6 yrs, and now the latest s/w is causing problems

Personally, I'm surprised you're able to tolerate EyeTV with that Mini, I found that a 2.0 C2D Mac couldn't adequately play my EyeTV recordings back.

You should also know a lot of people with newer hardware have decided to stay right where you are on Snow Leopard just because it was very stable in an HTPC sense. I was happy on SL, only going to Lion in the home theater because my 2011 Mini shipped with it.

On those older Minis, even if you swapped a C2D CPU in that limiting factor of the GMA950 remained, the only way around that was to install a Broadcom CrystalHD card:

http://xbmc.org/davilla/2009/12/29/broadcom-crystal-hd-its-magic/

Might be worth it for you. I have an Apple TV 1 with the Broadcom card and its effect is simply magic, handling fullsize 1080p bluray rips and actually outputting 1080p to an HDTV.
Quote:
so u recommend a Macmini4,1 then?

well, yes, I suspect you'd be happy with anything since then as long as you find it at a good price, I find what I most appreciated about my Minis have been having 1) HDMI and Thunderbolt, 2) FW800 and 3) room for two hard drives inside.
post #9 of 13
Thread Starter 
actually it's very watchable;-) and the dvhs->sammy firewire tuner played fine on a g4;-)

unfortunately, the said sammy firewire tuner that i originally wrote the applescript dvr s/w for has just recently stopped booting: stuck on hello, and borking the firewire chain which also connects to the external drive i record to:-( ahh, the joys of living on the trailing edge;-)

so whadda ya think of this: http://www.newegg.com/Product/Product.aspx?Item=N82E16815345007

the only heartburn i have is how eyetv handles conflicts: either/or, even when the overlap is 1min;-\ but i extended my homebrew tvpi scheduler to resolve comflicts outside of eyetv;-) and i understand eyetv doesn't hanlde multiple tuners very well:-(

the broadcom card BCM970012 looks interesting...amazon has 1 for $20...thanx 4 the tip:-)
Edited by airdrummer - 11/21/12 at 7:56am
post #10 of 13
Thread Starter 
then there's the BCM70015: http://www.amazon.com/Broadcom-BCM70015-Crystal-Hardware-DecoderHardware/dp/B008D96Z8Q/ref=sr_1_4?s=electronics&ie=UTF8&qid=1353512921&sr=1-4&keywords=bcm970015

but most appletv installs are running Crystalbuntu...dunno if i want 2 try it on my mini...
post #11 of 13
Quote:
i understand eyetv doesn't hanlde multiple tuners very well

EyeTV handles multiple tuners very well if you use the right tuners. For instance, there are users here at AVS that have had 3 EyeTV 500 units on the same machine for 7-8 years without any problem.
Quote:
so whadda ya think of this

Lots of Mac users have that HDHomerun model and are very happy with it, EyeTV has supported it for years and in fact was selling the tuner for a while.
Quote:
but most appletv installs are running Crystalbuntu

of course they are, Crystalbuntu was created to take advantage of this card along with XBMC, with the added bonus of XBMC being able to play back all your EyeTV recordings just fine without transcoding...the 15 is newer model of the card, better specs, check on eBay as well...
post #12 of 13
Quote:
dunno if i want 2 try it on my mini...

Here's the relevant thread in case you want to read up:

http://forum.xbmc.org/showthread.php?tid=65616
post #13 of 13
Thread Starter 
thanx, i've ordered the hdhomerun and the broadcom...h/w kludging's my hobby;-) wonder if 10.6 will be a problem...

"OSX driver and library support for the Broadcom Crystal HD Video Accelerator. Supported under XBMC for Mac on the AppleTV and under 10.4 and 10.5 OSX platforms."
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