Thank you for contacting Intel Communities.
I am sorry to hear you are having issues when using the PBP mode on your monitor. Can you please provide the following information to better assist you?
Report for Intel® Graphics Drivers (save the report in a .txt file and attach it to the thread)
I hope to hear from you soon.
I'am herwith attaching the information in text format
Also like to add one more information.When the display turns off in idle mode it is again coming black with a black screen within few seconds and staying like that.The diplay never turns off completely.
Thank you for your patience. I just received some information on the test on our lab about this matter.
Please see answers below:
1- After switched off and switched on the display was on 4k mode(2K*2K) @ 60hz without any issues.
2. Did some web browsing and scrolled some down some pages but did not get the break in middle as the customer.
In some cases the picture for the 2nd monitor (HDMI connection) when black and the signal was lost but it came back fast.
3. The operating system runs on 8 bits, so if you have an application that runs on 10 bits and the graphic drivers have the latest updates it should ran it without any issue but it depends of the type of connection (DisplayPort 1.2 and HDMI 2.0).
Hope this is useful.
There are some clarification required in the testing you conducted.
1.When you switch off and switch on the monitor it will run in 4k mode (2K*2K) but in extended mode.Kindly confirm whether multiple collage mode is active.Since you have done testing with 2 monitors you may not have noticed this.
2.I am using this mode in my LG 31MU97-B monitor which can accept 2 input.One half of screen for one input and the other half of the screen for the second input.I can confirm that when scrolling web pages faster there is break in the middle and the two inputs are not in perfect sync.You cannot verify this as you are using 2 monitors.
3.Whether using display port 1.2 and HDMI 1.4 can i get 10 bits in both at 2K*2K mode.
4.You have not replied about the issue of display not turning off completely.
I hereby request you to conduct testing with a single monitor which can accept 2 inputs preferably my monitor if possible.As intel is already working on an issue with this monitor (internal bug ID (1405539394)) i assume that you might be having this monitor for testing.In your test setup also you have noticed some issues like one display going off and coming after sometime in HDMI which i also faced sometimes.Whether intel will be taking actions for fixing these issues.Also can you share the details of your exact test setup.
Thank you for your patience and understanding.
a- I did not explain myself correctly and got you confused. The issue was reproduced in following way: I connected the HDMI and the DisplayPort cables to the monitor HP Z27s 27-inch that supports the 4k and PBP. When I mentioned “In some cases the picture for the 2nd monitor (HDMI connection) when black and the signal was lost but it came back fast”. I was talking about the second display on the same monitor. While the lab was going on I did not get the issue of “breaks in the middle” while I did some web browsing scrolling.
b- Yes, the operating system runs on 8 bits, therefore the two displays on the monitor will be 8 bits in total. If you have an application that runs on 10 bits and you want to run it on your operating system it is possible, but you need to have the latest updates for the graphics controller and to have the compatible hardware: connection (DisplayPort 1.2 and HDMI 2.0).
c- Whenever I turned off and then turned back on again the display remained in PBP but while I was watching some videos and browsing the HDMI display went black and the signal was lost. It came back really fast after some seconds but eventually the display was lost and I needed to restart the PC to get the HDMI display back again.
Hope it helps
First of all the monitor your tested HP Z27s is a UHD monitor with resolution of 3840*2160@60p.Mine(LG31MU97-B) is a true 4k monitor with 4096*2160@60p running at 2k*2k mode @60hz.The folllowing points need clarification.
1.When you switched off and switched on you didnt mention whether the display was in multiple collage mode or extended display mode.
2.When running in multiple collage mode in my monitor at 4k resolution the two sides of web pages dont sync when we scroll faster.This you have to test with a true 4k monitor preferable my monitor LG31MU97-B if possible, as intel is already working on an issue with this monitor (internal bug ID (1405539394)) i assume that you might be having this monitor for testing.
Expecting you immediate reply.