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BENQ Dual Monitor - Blurry w/ HDMI, works with DVI

Forum Index > Tech Support
Post a Reply
Bumblebee
Profile Blog Joined August 2010
3237 Posts
Last Edited: 2015-07-01 22:40:50
July 01 2015 21:59 GMT
#1
Hi guys,

I have a problems with my dual monitor setup.

I run a BENQ XL2411Z monitor as my main one and a BENQ XL2410T as my secondary monitor. I used to have a GTX760 which had 2x DVI outputs and both monitors ran great. Recently I got an office PC that is an upgrade (GTX960 on this one), but only has 1 DVI output, and then displayports and HDMI.

I installed my secondary monitor with HDMI and now it's blurry (nothing like the main one or before when it was through DVI). It's very noticable on text. We've gone through the settings on the monitor and they haven't changed from before. Tried a few different things with the sharpness and it didn't help. Been Googling for a bit but couldn't find anything that helped me.

What's interesting is they both look to be pixel perfect but the black looks weird compared to the other one. All text looks blurry, not sure if this is the same thing or what. Attached pictures:
From the good monitor (XL2411Z w/ DVI): http://i.imgur.com/84aPbW8.jpg
The bad monitor (XL2410T w/ HDMI): http://i.imgur.com/NwrfmVA.jpg

My OS is Windows 8.1 Pro.

I am not sure what to do here and would appreciate some help. Thanks in advance.
There is no difference between a knight and any other man aside from what he wears. @robinnymann
Ropid
Profile Joined March 2009
Germany3557 Posts
July 02 2015 12:59 GMT
#2
This makes no sense to me.

I thought the format of the data that's sent through HDMI is pretty much the same as what's used for DVI-D. It's digital, so an issue with the cable can't be the reason for strange quality (at least that's what I always thought).

When looking at your photos, the resolution seems to be the same as you can count the pixels and everything fits when comparing, so everything about that is fine.
"My goal is to replace my soul with coffee and become immortal."
Cyro
Profile Blog Joined June 2011
United Kingdom20285 Posts
Last Edited: 2015-07-02 13:37:57
July 02 2015 13:35 GMT
#3
HDMI cannot do 1080p@120hz, maybe it can with the most recent standard but that's on very very few graphics cards. You should default to displayport and use dual link dvi as a backup.

Also you have to manually set in the nvidia driver that you want HDMI to be 0-255 color and not squished to like 16-235, that applies to everything output to the screen (unlike other outputs where you only have to manually set it on every driver update for video playing). You should avoid HDMI wherever possible though.
"oh my god my overclock... I got a single WHEA error on the 23rd hour, 9 minutes" -Belial88
Ropid
Profile Joined March 2009
Germany3557 Posts
July 02 2015 13:50 GMT
#4
That 16-235 color range like for TVs might explain the photo?
"My goal is to replace my soul with coffee and become immortal."
Cyro
Profile Blog Joined June 2011
United Kingdom20285 Posts
Last Edited: 2015-07-03 09:12:34
July 02 2015 19:58 GMT
#5
is default in nvidia driver for HDMI
"oh my god my overclock... I got a single WHEA error on the 23rd hour, 9 minutes" -Belial88
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