Samsung 750D/950D DisplayPort Functionality

JimAroo · 29 May 2012 at 20:28

Hi,

Now that the 750D and 950D monitors have dropped significantly in price over the past month, I expect a huge increase in owners. I find it important to let people know the issues they could face when using these monitors.

The main issues that surround these monitors are all to do with the DisplayPort. We have pages and pages of threads on the Nvidia forums about these products, A good 6 months has passed and we are still no closer to receiving a proper fix.

The 950D isn't as badly affected due to it having a DVI-D connection, thus providing a workaround for the currently broken DisplayPort. If you want to get one of these monitors I strongly recommend spending the extra and picking up the 950D purely for the DVI-D port.

As for the 750D it only has 2 output sources, HDMI and DisplayPort. Meaning that you can only use HDMI, resulting in no 120Hz and no 3D.. so the main selling point and features of this monitor can't be used.

To get DisplayPort functionality working driver developers (ATI and Nvidia) have to use hacks in order to receive a signal in Windows. The results of these hacks have shown to be extremely random, working for some users but not others, Nvidia confirmed this by saying the following: 'Some users report fixed while others still seem to have issues. Will pass info to our software team.'. Keep in mind that even with a 100% working hack it's very likely you still won't receive any signal for the POST or BIOS screen, so should you want to do a task like install an OS you'll have to use an HDMI connection.

What we know so far:

- It's a problem on Samsung's side of the fence, due to the fact that most users get no DisplayPort signal at all, not even on the POST/BIOS screen.

- Nvidia responded to the issue with the following: 'So it seems the DisplayPort issue with the Samsung monitors reported is due to the fact that the DisplayPort on these monitors is reporting itself as a DisplayPort 1.2 even though it is really just a 1.1. We are sending 1.2 signals in the newer drivers that this monitor is not interpreting correctly because it is not a true DisplayPort 1.2 display. We still have not decided on a final resolution however at least I wanted to provide you all with the root cause that our software team has come up with so far. '.

- Samsung hasn't admitted any responsability for the issue, the best result people have been offered is a replacment, but that is no good due to it being a firmware / driver issue.. the same problem would only occur again.

- Ideally Samsung will need to acknowledge the problem and correct it in a Firmware update.

- The ATI hack seems to be much more effective, most of the users with no signal in Windows are Nvidia users.

- Some people receive signal in POST and BIOS screens, even with a DisplayPort.. but it seems pretty random, in the way that it can start working at any time, as well as stop working.

Thanks.

borley · 29 May 2012 at 20:55

Yeah mine is with Samsung at the moment due to the display port issue weather they can do anything is anyones guess as the day they got it they needed a techy to phone me up as he didn't understand the problem! surely they have heard of it, anyway i think its terrible that hardware can be released with such a high failure rate, what do the people in their R&D deparment get paid for?
Regards
Guy

JimAroo · 29 May 2012 at 21:03

borley said:
Yeah mine is with Samsung at the moment due to the display port issue weather they can do anything is anyones guess as the day they got it they needed a techy to phone me up as he didn't understand the problem! surely they have heard of it, anyway i think its terrible that hardware can be released with such a high failure rate, what do the people in their R&D deparment get paid for?
Regards
Guy

I really don't think Samsung are aware of the issue, they seem to ignore it and just replace everything in question.. any other time this would be fine, but when it's not a hardware defect but a firmware and driver issue blindly replacing won't help.

But keep me notified on your progress.

Thanks

eyetrip · 29 May 2012 at 21:16

Can you link me to the ATI hack?

I don't have issues with seeing the BIOS, but I do have issues resuming form sleep...

This may land up in me returning the monitor.

~bones~ · 29 May 2012 at 21:25

Only had my 750D a few days now but had no issues with display port, 120hz and 3d works perfectly with my 670

borley · 29 May 2012 at 21:30

~bones~ said:
Only had my 750D a few days now but had no issues with display port, 120hz and 3d works perfectly with my 670

It realy is random mine went 48 hours with no problem, then had many issues, tried 2 different brande Dp cables,but to no improvement.
regards
Guy

JimAroo · 29 May 2012 at 21:40

eyetrip said:
Can you link me to the ATI hack?

I don't have issues with seeing the BIOS, but I do have issues resuming form sleep...

This may land up in me returning the monitor.

The hacks are built into the Catalyst drivers, regarding the resuming from sleep.. I believe that is a side effect.

~bones~ said:
Only had my 750D a few days now but had no issues with display port, 120hz and 3d works perfectly with my 670

Mine worked for a good month with the 301.24 beta drivers. Now it's totally broke, on all drivers.. even in POST and BIOS screen, which used to work.

eyetrip · 29 May 2012 at 21:43

JimAroo said:
The hacks are built into the Catalyst drivers, regarding the resuming from sleep.. I believe that is a side effect.

Side effect of what? The hacks?

And when you say build into drivers, you mean there is nothing that needs to be user enabled, etc?

What are these hacks?

JimAroo · 29 May 2012 at 21:56

eyetrip said:
Side effect of what? The hacks?

Yes it is a side effect of the fix put in place, it happens with the Nvidia drivers too.

eyetrip said:
And when you say build into drivers, you mean there is nothing that needs to be user enabled, etc?

You shouldn't have to enable anything, if they wasn't working you wouldn't even be able to get a signal.. so you know it's working.

eyetrip said:
What are these hacks?

I'm not 100% sure how the hack works, it's Nvidia that came up with it.. but it's something to do with sending different signals to the DisplayPort, which isn't really intended.

Nvidia: 'We are sending 1.2 signals in the newer drivers that this monitor is not interpreting correctly because it is not a true DisplayPort 1.2 display. We still have not decided on a final resolution'.

But it's obviously not that simple, as Nvidia confirmed here: Some users report fixed while others still seem to have issues. Will pass info to our software team.

Since that last failed attempt of a fix no news from Nvidia, it seems they are out of ideas, it's getting to the point where they can't do much more about it.. Samsung will have to get their act together and face their mistake.

eyetrip · 29 May 2012 at 21:57

Well, the monitors have been out a while now, so what are the odds of that?

Sigh, tech is beginning to suck.

JimAroo · 29 May 2012 at 22:03

eyetrip said:
Well, the monitors have been out a while now, so what are the odds of that?

Sigh, tech is beginning to suck.

Indeed they have, i got mine round about the Christmas time and made use of the 5% off offer, as well as free delivery.. i saved quite a lot of cash. Though i still payed £400.. for something that's worth no more than £140 in its current state. No doubt now they've dropped in price, plenty more people will be buying them.. only if they knew the horrors that potentially await.

I waited over 2 month for Nvidia to apply a fix, only for it to stop working after 1 month.

It'll be the last Samsung monitor I'll ever buy, shame because I've always had Samsung monitors and they've always been quality.. This monitor is no different, when it worked.

eyetrip · 30 May 2012 at 09:45

You know, I like my stuff to do what it's supposed to.

And have had enough stress getting stuff working that I don't want more issues.

Is 120Hz nice? Yes, but not worth any issues to me.

Perfect_Chaos · 30 May 2012 at 10:57

if enough people complain to samsung surely they can easily fix the issue with the display port?

is it the firmware in the monitor causing the problem?.

Looks like the 750D is on offer again this week, anyone put off by the display port issue?.

borley · 30 May 2012 at 11:40

Perfect_Chaos said:
if enough people complain to samsung surely they can easily fix the issue with the display port?

is it the firmware in the monitor causing the problem?.

Looks like the 750D is on offer again this week, anyone put off by the display port issue?.

I think a few have i will be emailing them today, but i don't think they care, i mean how many times will i have to return a monitor to get a refund or a different model? we shall see.Its strange how these big companies get away with it, i mean as i mentioned it before if something as cheap as a kettle has a common problem its recalled, but a £420 monitor (what i paid), i will have to keep sending it back if i continue to have the problems.
Regards
Guy
Just left a review for the monitor, but it has to be checked, what do you think the chances are they are going to display it? haha

Stanith · 31 May 2012 at 22:33

I've been considering buying this monitor (the 750D) for a month or so now, and when it dropped in price I was so close to pressing the buy button (along with a new graphics card, which I'd need due to my GTX 460 not having a display port). However, reading everything on these forums (and elsewhere on t'internet) it really seems like it would in fact be a bad choice. I don't want hassle with what is arguably the simplest of hardware from the end-user's point of view (a monitor?! when has that ever not just worked when plugged in?), and I certainly don't want it to randomly stop working if I buy a new graphics card in the future! These displayport issues seem completely unacceptable, and a complete gamble too.

If the 950D was part of this price drop I'd probably have jumped on it, as DVI seems like a far safer option (I'm sure I can live with the backlight bleed, probably still a lot nicer than the iiyama 120hz)...but it seems to have vanished from the OcUK store entirely. Any staff here happen to know if it will ever be back on the store, and if so will it be reduced in cost like the 750D is at the moment?

daz87uk · 1 Jun 2012 at 00:23

back light bleed is so minimal its not even noticeable unless you stare right into the corners. Interesting thread as Ive had the 950D for awhile now and have no issues with 3D on any ports neither boot issues. Only gripe was when I got this monitor, no glasses where available anywhere. the 3100GB stamped on the side of the glasses is for tv models and don't work. I couldnt find a single website that sold them apart from 1 pair on ebay. at the time I contacted samsung about this and they where quite rude didnt really give me any answers and sent me to some obscure link to the only website selling them. at least I see they are readily available now with the code 3150GB.

borley · 1 Jun 2012 at 00:31

Hi for the glasses you can get them straight from Digicare google it, its in the UK they distribute Samsung items. Ipaid around £39 with postage about £44 and i got them in 48 hours!
They are the proper code you quoted as i had to get them ones for my 750.
regards
Guy

daz87uk · 1 Jun 2012 at 00:43

borley said:
Hi for the glasses you can get them straight from Digicare google it, its in the UK they distribute Samsung items. Ipaid around £39 with postage about £44 and i got them in 48 hours!
They are the proper code you quoted as i had to get them ones for my 750.
regards
Guy

thanks, I edited what I wrote before I realised your reply. cheers will check that site out. :cool:

borley · 1 Jun 2012 at 13:33

I have posted this in another thread but just in case you miss it.
Here is my update after sending my 750D to be repaired.
What i expected was not a repair as most people claim it needs a firmware update or something similar from Samsung to fix this issue about the displayport.
So i thought they may just send me a replacement.
But a week later i got the same one back , opened up the box it didn't say what they had done just a generic slip saying its been repaired and if you have any further problems don't contact Samsung contact Viewtek Display Services, these are the people that do the repairs.
I was surpised to get a phone call once they recieved the monitor a technician asking the problem like he'd never heard of it!
So it makes me wonder weather this problem is getting back to Samsung as you don't contact them for the repair.
So anyaway i wasn't holding out much hope as i got the same monitor back, same serial etc but after 3 days i have no problems to report, only time it went black was a driver change, i think this is because it had to detect the diplay port driver once booted.
So i don'tt know what they have done i may phone them later, because everyone was pointing to a firmware/software fix even Nvidia said it had problems.
So we will see how it goes, it could still go but this is the longest i have had with no problems.
Regards
Guy

Perfect_Chaos · 1 Jun 2012 at 23:04

borley said:
I have posted this in another thread but just in case you miss it.
Here is my update after sending my 750D to be repaired.
What i expected was not a repair as most people claim it needs a firmware update or something similar from Samsung to fix this issue about the displayport.
So i thought they may just send me a replacement.
But a week later i got the same one back , opened up the box it didn't say what they had done just a generic slip saying its been repaired and if you have any further problems don't contact Samsung contact Viewtek Display Services, these are the people that do the repairs.
I was surpised to get a phone call once they recieved the monitor a technician asking the problem like he'd never heard of it!
So it makes me wonder weather this problem is getting back to Samsung as you don't contact them for the repair.
So anyaway i wasn't holding out much hope as i got the same monitor back, same serial etc but after 3 days i have no problems to report, only time it went black was a driver change, i think this is because it had to detect the diplay port driver once booted.
So i don'tt know what they have done i may phone them later, because everyone was pointing to a firmware/software fix even Nvidia said it had problems.
So we will see how it goes, it could still go but this is the longest i have had with no problems.
Regards
Guy

Thanks for updating us on what happened, i have ordered a 750D myself last night. I sent a webnote to ocuk asking if they knew about the issue with the display port, i got a reply back saying it could be a faulty batch.. seems plausible i guess.

if i get any problems with mine, i'll be contacting samsung straight away. Now just got to hope for no dead pixels or backlight bleed.

ocuk were generous enough to give free saturday shipping to me as well.