PDA

View Full Version : g751 JT Multiscreen freeze



guillaumea
12-11-2014, 10:29 AM
Hi,
i'm trying to use multi screen with a new g751 JT. When I use HDMI + mini display port with HMI adaptor, it works for 2s then windows freeze. If inside game, visuals still works but keyboard and mouse stops working so I have to press start button to reboot, unable to ctrl+alt+sup to have a look on what's happening.
Any ideas ?
thanks in advance

Guillaume

hmscott
12-11-2014, 04:50 PM
Hi,
i'm trying to use multi screen with a new g751 JT. When I use HDMI + mini display port with HMI adaptor, it works for 2s then windows freeze. If inside game, visuals still works but keyboard and mouse stops working so I have to press start button to reboot, unable to ctrl+alt+sup to have a look on what's happening.
Any ideas ?
thanks in advance
Guillaume

Guillaume, do you have the desktop mirrored, extended, or independent? Try changing the desktop spanning to see if that helps. Try it with only built-in and one or the other, but not all 3 at once. See if you can isolate the problem to HDMI or DisplayPort + internal. Then try just the 2 external desktops.

It also might be the cabling, isolating each monitor combination will help determine if it is one external display or the other that is causing the problem, and swap the cabling between them to see if the problem moves with the cabling change.

Noone else has reported a freeze up with external monitors on the G751JT/JY, but this post talks about compatibility with new Nvidia drivers and their external configuration, so it might be related - you might try running the 344.80 Hotfix release

G751 HDMI Problem
http://rog.asus.com/forum/showthread.php?54604-G751-HDMI-Problem&p=456667&viewfull=1#post456667

GeForce Hotfix driver 344.80
https://nvidia.custhelp.com/app/answers/detail/a_id/3607/~/geforce-hotfix-driver-344.80

•GeForce GTX 980 displays texture shimmering when Texture Filtering Quality set to High Quality.
•GPU outputs fuzzy lines over DisplayPort after a period of time following driver updates.
==>> •System hang up and black screen after power on with some monitors (DP1.2 & 4K/60Hz) + GTX980

ROGscholar
12-11-2014, 05:47 PM
Interesting post. please keep update your test findings.

guillaumea
12-12-2014, 05:59 PM
hi hmscott,
first thank you for your complete response.
My bad i didn't do the test before :-(
So after some tests, everything is fine with built-in + hdmi or vga.
The problem appears with the minidisplay adaptor to hdmi
With exteranl screen (iiyama prolite) it freeze really fast. When the external screen is sleeping, no problem but when it wake up, freezing appears.
Same with an old sony tvscreen but it takes more time (+-5s)
Tested with 344.80 and i got the same problem.
I also test with another minidisplay->hdmi adaptor and i got the same freezing.

Maybe something with a return signal from the screen ?

REALTORPDX
01-03-2015, 04:04 AM
Hi -- I'm having exactly this problem. A few seconds after I plug the mini-displayport adapter into the laptop (G751JT -- brand new as of today), the computer freezes and I have to hold the power button down for 5 seconds or so to force the computer to power down and then reboot. I've tried several cables and several external monitors, and they all cause this freeze. Connecting to the HDMI port on the laptop works fine, but the monitor I want to use doesn't support 2560x1440 over the HDMI port. Were you able to fix this issue?

Edit: I'm running latest (I think) NVidia drivers; 347.09. The monitor display is mirrored (the computer freezes before I have a chance to switch to extended, and setting it before hand doesn't seem to help). The signal continues to be output over the display port connection, but the computer is completely frozen (or at least the keyboard and mouse don't work). Any troubleshooting ideas?

geneticweapon
01-03-2015, 09:33 AM
The display port on these machines is jacked, there's been multiple complaints about it.

hmscott
01-03-2015, 12:08 PM
It looks like a widespread problem with some DisplayPort cables being the cause.

https://www.google.com/search?num=50&safe=off&q=displayport+screen+freezing&spell=1&sa=X&ei=W9unVI_KHMuvogSCk4GYCg&ved=0CBwQvwUoAA&biw=882&bih=453

I ordered these and both work fine. I used the long cable with mini DisplayPort mostly, but used the mini DisplayPort Adapter cable with a DisplayPort-DisplayPort cable as well on my G750JX/JH:

Accell B143B-007J UltraAV Mini DisplayPort to DisplayPort 1.2 Cable with Latch, White, 6.6-Feet
http://www.amazon.com/gp/product/B00A7R9I22/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

Accell B112B-001B 10-Inch UltraAV Mini DisplayPort/DisplayPort Female Adapter - Black
http://www.amazon.com/gp/product/B003TSDG06/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

No freezing, I use independent desktops, not spanning or mirror, FYI.

REALTORPDX
01-03-2015, 05:19 PM
Hi -- thanks for the suggestions, and particularly for the amazon links for specific products you know work with your setup! Hopefully this is just a driver issue that can be eventually fixed. I just ordered the Accell cable and will post on Monday when I get it with an update. Just for completeness: I'm trying to connect to a Dell U2713HM at 2560x1440, although I also tried plugging into an Asus VS248 at 1920x1080 with the same result.

REALTORPDX
01-05-2015, 07:44 PM
An update -- received the Accell cable and everything now works fine. Must have been the same issue others were reporting where there is some bug interfacing with certain cables somewhere. Thanks for your help!

hmscott
01-05-2015, 08:28 PM
An update -- received the Accell cable and everything now works fine. Must have been the same issue others were reporting where there is some bug interfacing with certain cables somewhere. Thanks for your help!

REALTORPDX, the cables turn out to be the weak link in the DP world. I found that out the hard way early on with Dell cables, and things haven't changed.

Glad to hear it works, and I hope others read this and get a good cable if they can't get their DisplayPort to work. :)

andrescc
01-08-2015, 02:45 AM
Hi folks! I have the same problem as described in the first post! I have already one TV connected to my laptop (ASUS G751JT) through the HDMI port, but when I try to connect a second TV through the Mini DisplayPort by using a Mini DisplayPort to HDMI Adapter my laptop freezes after 2 seconds! I've also tried to connect only one external monitor through the Mini DisplayPort adapter to see if it would work, but it doesn't. So, I've tried everything that I could, but it keeps not working though. I'm not sure if the adapter that I'm currently using has something to do with my problem, but it has worked great in a Maccbook Air. The adapter that I'm using is this one: http://www.amazon.ca/Patec%C2%AE-DisplayPort-Female-Adapter-MacBook/dp/B00C4066AC/ref=sr_1_19?ie=UTF8&qid=1420683715&sr=8-19&keywords=Mini+DisplayPort+to+hdmi . So, has anyone found a possible solution to this? Suggestions of Mini DisplayPort to HDMI Adapters that really work on the Asus G751JT are also welcome! Thanks in advance!

Gauz93
01-12-2015, 04:48 PM
Hi another g751 JT with Displayport issues reporting in.

My problem is that I only have hdmi screens and using a mini-dp->hdmi cables hangs my system. Tried different cables but really don't want to buy 50€ cables to test if it works.

This might even call for a return. Too bad for an otherwise great notebook.

REALTORPDX
01-12-2015, 04:53 PM
Hi andrescc -- all I can recommend is what worked for me, try different cables (in your case different mini-DP to HDMI adapters and different HDMI cables). Unfortunately, I can't recommend specific cables because I'm not using HDMI (before I was trying mini-DP to DVI-D through a brand new apple adapter, then a few different brand new DVI-D cables). Maybe someone else can? Since this problem doesn't seem to be specific to this particular laptop series, maybe try doing a broader google search for DP -> HDMI laptop screen freeze.

Wryter
03-20-2015, 04:13 PM
I've had my G751JT-DH72 for about a month now, and I love it! (Well, other than the pulled muscles from trying to lift it.) I bought a DVI to Thunderbolt adaptor from MicroCenter; their house brand (QVS). I'm using a ViewSonic HDMI 1080p monitor, and as soon as I plug in the Thunderbolt adapter, the mouse freezes immediately. At the same time I bought the Thunderbolt adapter, I also bought DVI to HDMI QVS adapter. This works perfectly. Guess I'll order the suggested cable and see if it works. But while I'm at it, I noticed that Win 8.1 doesn't request drivers for HDMI or Thunderbolt ports. Am I still getting the best video? Is there any way I can tell? Thanks in advance for any help.
John

hmscott
03-20-2015, 05:37 PM
Am I missing something, or are you guys aware that you don't need those expensive adapters, just get a monitor with a DisplayPort input, and use a mini DP to DisplayPort cable.

Those adapters can cost as much as a monitor, and as you can see are problematic.

There are lots of new DP 1.2 ready monitors available now, check out the sales this weekend :)

JSerra
08-18-2015, 09:38 AM
I think this info could be useful: I've an Asus G751JT, same problem in linux and windows.
I'm trying with a Startech MDP2DVI adapter and a Asus VS239 monitor. Updated firmware and drivers.
If I find a working adapter I'll post it here.

aeolisio
08-18-2015, 09:49 AM
Displayport to hdmi
http://www.ebay.com/itm/Mini-Display-Port-DP-to-HDMI-Converter-Adapter-For-Apple-iMac-MacBook-Air-Pro-/371321171214?hash=item5674776d0e
verified working on multiple models of g751 for display to hdmi while also using the hdmi. We user a few at work for the old monitors and tvs transmits under hdmi 1.4 with sound

for Displayport to dvi
http://www.ebay.com/itm/2014-Mini-DisplayPort-DP-to-DVI-I-Adapter-Cable-Cord-For-MacBook-Pro-Air-iMac-/181297056624?hash=item2a36258b70
verified working aswell with g751 in multi with hdmi though we have thrown out the last of our dvi displays so these went with them

SwedishDragon
06-07-2017, 09:03 PM
Moved (https://rog.asus.com/forum/showthread.php?93944-G751JT-External-Monitor-CS230-Hard-Crash)

SwedishDragon
06-11-2017, 11:53 PM
Moved (https://rog.asus.com/forum/showthread.php?93944-G751JT-External-Monitor-CS230-Hard-Crash)