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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

$1299 Seiki UHDTV 50" SE50UY04 - Bought it today

BTW, what PSU this TV has? Builtin or not? Can it be used with 240V / europlug as well or some adapter/transformator needed? And if used not just as monitor but as TV, does it have PAL output or just NTCS?
 
Janis P. said:
BTW, what PSU this TV has? Builtin or not? Can it be used with 240V / europlug as well or some adapter/transformator needed? And if used not just as monitor but as TV, does it have PAL output or just NTCS?
Click to expand...

I'm using it in Dubai (220V) without any problems. It has a universal 100-240V AC power supply built in and uses a standard US-style plug for which a simple plug adapter should be easy to find. The integrated TV tuner is designed for the US market...and since you would not buy this to watch over-the-air TV broadcasts I don't understand your question.
 
houkouonchi said:
Then you should probably hit up this guy:

http://hardforum.com/member.php?u=265159

Mac drivers are broken on nvidia (my macbook retina has a HDMI port too) but it only works in linux/windows. That tom guy said he had a workaround for his mabook retina through a driver hack. He might be able to help you with a fix too.

My comment earlier was if you only have display port there is nothing that you can do IMHO. The passive adapters do not work for hdmi 1.4 on nvidia machines under linux Mac OS X or windows. I have tried them already.
Click to expand...

Thanks Houkouonchi, but I haven't pulled the trigger on the Seiki just yet. GTX 680 runs my Cinema Display just fine.
 
Ron, from the 1920x2160 thing it sounds like you used a HDMI -> DVI adapter which will not work. Someone reported it did but I dont see how. On DVI when you go > 165 Mhz pixel clock it switches to 'dual link' DVI mode which sends each line separately (kind of like interlacing) which is why you are getting that. HDMI stays single TMDS when you go > 165 Mhz (not dual link mode) and thus higher spec HDMI and DVI are not really compatible with each other. Here is the modeline I was using with the active DP -> HDMI adapter for 24 Hz:

Modeline "3840x2160" 213.15 3840 3888 3920 4000 2160 2163 2168 2222 +hsync -vsync

Code: 
Pixelclock:
213.15
Active Horizontal Pixels:
3840
Horizontal Front Portch:
48
Horizontal sync width:
32
Horizontal back porch:
80
Active Vertical Pixels:
2160
Vertical Front Portch:
3
Vertical sync width:
5
Vertical back porch:
54


Pixel Clk:
213.15
H Active Pxl:
3840
H Blank: :
160
H Sync Offset:
48
H Sync Width:
32
H Image Size:
XXX
H Border:
0


V Active Lines:
2160
V Blank:
62
V Sync Offset:
3
V Sync Width:
5
V Image Size:
XXX
V Border:
0

You should be able to get that going on the mac if you can use a program to create custom modelines (you don't need a custom EDID).

You can also do 17Hz over the native HDMI port (as a workaround until there is a driver fix) as well but that is kinda sucky since its not even near film framerate.
 
Finally got custom modelines working on linux. Giving it anything > 31Hz @3840x2160 appears to go in this weird distorted interpolated mode although it still accepted the signal.

So far not a single drop out since I updated to the newest firmware (audio fix) at 3840x2160@31Hz, 1920x1080@120h and 1280x720@240hz. It does seem like there is less input lag at 1280x720@240Hz even though the display is not displaying more Hz. I think its because the scaler is 1 frame behind and the higher Hz is making it be less behind and thus lower input lag.
 
houkouonchi: maybe post here those modelines and other configuration gotchas/hints for those that might use this TV@linux, to not reinvent the wheel.
 
Janis P. said:
houkouonchi: maybe post here those modelines and other configuration gotchas/hints for those that might use this TV@linux, to not reinvent the wheel.
Click to expand...

#3840x2160@31hz
Modeline "3840x2160" 307.00 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync
#1920x1080@120Hz
Modeline "1920x1080" 296.70 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
#1280x720@240Hz
Modeline "1280x720" 296.72 1280 1390 1430 1650 720 725 730 750 +hsync +vsync

And the mode validation over-rides needed:

Option "ModeValidation" "AllowNon60hzmodesDFPModes, NoEDIDDFPMaxSizeCheck, NoVertRefreshCheck, NoHorizSyncCheck, NoDFPNativeResolutionCheck, NoMaxSizeCheck, NoMaxPClkCheck, AllowNonEdidModes, NoEdidMaxPClkCheck"
 
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Not sure I understand why you're pushing to 31Hz. Seems like that would be a funky mis-match to all the most common frame rates.

30Hz seems to be working just fine out of the box with the Titan on Windows, still no issues. I'm definitely feeling no love for 30Hz as a desktop interface rate, or for much of anything really. So far the SEIKI has been a great display (aside from sync issues on HDMI 3).... Don't know if I'm going to buy more of them. Not feeling it as a desktop display. Holding out for HDMI 2.0 and 60Hz+ for any new 4K units... Probably a year out though. :/
 
Jeff Kilgroe said:
Not sure I understand why you're pushing to 31Hz. Seems like that would be a funky mis-match to all the most common frame rates.

30Hz seems to be working just fine out of the box with the Titan on Windows, still no issues. I'm definitely feeling no love for 30Hz as a desktop interface rate, or for much of anything really. So far the SEIKI has been a great display (aside from sync issues on HDMI 3).... Don't know if I'm going to buy more of them. Not feeling it as a desktop display. Holding out for HDMI 2.0 and 60Hz+ for any new 4K units... Probably a year out though. :/
Click to expand...

Simply due to higher Hz = better. I have the 30 and 24 Hz modes as well which on linux can easily be changed to with control alt - or control alt + so I can quickly/easily change the refresh rate on the fly to 23.976 or 29.97 Hz if I am playing video.

I agree that 60Hz 4k displays that are similarly affordable are probably 1+ year out. That is why I opted to get the seiki as I don't want to wait a year for something better. I actually am not using it THAT much for video but mostly desktop work and gaming here and there so I am trying to get as many Hz as I can out of it.
 
houkouonchi said:
I agree that 60Hz 4k displays that are similarly affordable are probably 1+ year out. That is why I opted to get the seiki as I don't want to wait a year for something better.
Click to expand...
Seiki won't make appearance of hdmi2 faster, but it will bring down UHD/4K prices (and making adoption of this new tech quickly more widespread for common folks as well), much much faster then without such. When i saw UHD/4K monitor & TV prices @CES 2013 or from different news bits from all over everywhere, i initially expected seiki level of pricing no sooner then +1.5-2 years. Now with such cheaply priced annoying eyesore all vendors of first echelon will have to drop prices much sooner then expected = big win for customers. Era of $10-20K UHD products will end much quicker. And for this role i highly value this seiki tv. I don't care much about TV market, but i hated so prolonged maximum 30" WQXGA stagnation @PC market, that finally started to move on.
 
Finally I got Linux to work with the Nvidia driver: basically the TV is reporting correct EDID values, you just have to tell the X configuration to not validate the EDID modelines against the NVIDIA reported HDMI frequencies (Nvidia reports 165MHz when the hardware can do 300MHz).
Works fine and stable at 30Hz with a GTX 670 and GeForce GTX 650 Ti BOOST (while using the latest Seiki firmware).
Good.

Luc
 
Just received my Seiki. I'm using a GTX 680 (Mac Edition) and can only achieve a 17hz refresh rate. Has anyone been able to get 30hz using a Mac Pro and GTX 680?
 
Thanks Luc, SwitchResX is what I had to use to get 2160p at 17hz. No luck with 30hz. Looks like I'll have to return the monitor. Bummer :(
 
Daniel Doherty said:
Thanks Luc, SwitchResX is what I had to use to get 2160p at 17hz. No luck with 30hz. Looks like I'll have to return the monitor. Bummer :(
Click to expand...

Daniel: Tom was able to hack the nvidia driver to get it working at 30Hz on a macbook pro retina. I would suggest trying to hit him up from it. This is assuming you have a native HDMI port.

Either way in the next few weeks when the bizlink/accel active DP -> HDMI 1.4 adapter comes out you will easily be able to run it regardless of drivers.

You can try contacting them directly if you want to know an exact timescale:

Active DP -> HDMI 1.4 (3840x2160 supported)
Bizlink S10047
Accell B086B-003B http://www.accellcables.com/B086B-003B-2.html

Active Mini DP -> HDMI 1.4 (3840x2160 supported):
Bizlink KS30047
Accel B086B-008B http://www.accellcables.com/B086B-008B-2.html

Considering the accel one just very recently showed up on ati's site and has a price I think it will be coming out any day now. I think returning the display is a little hasty.

Since they are active (without USB power supply) they will probably be reliable unlike the dual link DVI ones. Also I was very surprised to see the cost at only $32.99. Very nice deal indeed...
 
Thanks for the links houkouonchi ! Tom has been M.I.A. since appearing on this forum, no Nvidia patch details from him yet.......
 
UPDATE!!! I spoke with Accell Cables rep and he said they will start shipping the active adapters by June 17th.
 
Daniel Doherty said:
UPDATE!!! I spoke with Accell Cables rep and he said they will start shipping the active adapters by June 17th.
Click to expand...

So is it worth waiting 12 days or are you still going to return the monitor?

I was living with 17 Hz myself due to broken nvidia (HDMI) drivers on linux. I later got it up to 24 hz by overclocking an active DP -> HDMI adapter which got around the linux driver problems (same as the mac ones I am sure) was not spec'd for what I was pushing over it (and had sync issues).

Since then nvidia finally fixed their drivers on linux and I am now running at 31Hz without any sync issues. I was going to go the adapter route if nvidia did not man up with their drivers. I might still go that route just so I can use older drivers which I prefer.
 
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