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OptiPlex 3040 micro, dual monitors using HDMI and DP ports, DP connection unreliable
Hi there,
I've got an OptiPlex 3040 micro running Windows 10 64bit (came installed on the machine) and two monitors (Dell U2415, came as a pair) using extended display. One monitor has an HDMI-HDMI cable going into the computer's HDMI port, the other has a DisplayPort-DisplayPort cable going into the computer's DisplayPort port. (There is no VGA port installed on this machine)
Both monitors are on the correct setting for detecting what cable is plugged into them. Whichever monitor the DisplayPort cable is plugged into cuts out to a black screen with nothing on it multiple times an hour during normal computing (mostly email and web browsing). Not a steady flicker, just randomly goes black and randomly comes back on.
I uninstalled and reinstalled the drivers for the monitors, checked all the settings, ran the troubleshooter (no issues found), updated my graphics card driver (it was already the latest version), and nothing seems to be wrong there.
When I swapped the HDMI and DP cables to see if it was a cable issue or the physical monitor, the monitor that then had the DP cable plugged into it started to have the problem, whereas the other monitor (now plugged in via HDMI) had no problems. Originally there was a Mini DP-DP cable connecting one of the monitors and I thought maybe that was the issue, so I replaced it with a brand new DP-DP cable the other day. Still having issues with whichever monitor is connected via DP.
This computer is not even three months old. The physical cables aren't the issue and the physical monitors aren't the issue. Is there anything I can do to have the OptiPlex 3040 micro be able to have two Dell U2415 monitors simultaneously connected via Display Port and HDMI and have them work appropriately?
Thanks in advance! I've looked at other posts on here and on Windows' support forums but haven't found anything that works yet. Beginning to think the OptiPlex can't handle two monitors.
spgsit
185 Posts
0
March 4th, 2017 08:00
OP 3040 was the worse model we ever encountered over years. Mobo failure rate was amazingly high. Symptoms were plenty, one was ie lost video from HDMI
May not be your case, but worth keeping in in mind
alyon
1 Rookie
1 Rookie
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7 Posts
0
April 5th, 2017 11:00
Currently using OptiPlex 3046 SFF
The monitors I use are connected as follows:
OptiPlex DP Port->DP Port on Primary Monitor
OptiPlex HDMI Port->DVI Port on Secondary Monitor
The HDMI>DVI adaptor was purchased here: (HDMI Input to DVI Output Adapter Cable - 6 Feet)
www.amazon.com/.../ref=oh_aui_detailpage_o00_s00
The current situation is that both monitors successfully display an extended display however the resolutions do differ slightly enough to strain my eyes. I am currently awaiting response from Dell Support for a guaranteed solution with matching resolutions.
I did account for the chance that the cord was damaged and tested with another that someone else is using in a mirrored setup. Same results with slightly differing resolutions.
Please do not purchase anything expensive to remedy this issue until I get back.. My solution was shipped over-night for less than 10$ total from Amazon.
Expensive Alternatives:
www.pcnation.com/.../Tripp-Lite-3-Port-DisplayPort-1-2-Multi-Stream-Transport-MST-Hub-4K-x-2K-B156-003-V2-0037332193353
This HUB should do the trick but I am not purchasing until Dell promises me it will work.
If you have purchased the Tripp-Lite DP splitter hub and are currently using it to display an extended desktop on 2 or more monitors with matching resolutions, please let me know!
gpjandra
3 Posts
0
April 27th, 2017 11:00
Only using HDMI ports (not DP or DVI adapters) and still getting issue described in posts. What other solution is there?
gpjandra
3 Posts
1
April 27th, 2017 18:00
Was there any solution found using HDMI ports?
kh51baker
1 Message
0
April 28th, 2017 11:00
Have Optiplex 3040 about 1 year old, video HDMI and DP with HDMI adapter running two monitors. First problem noticed was slight keyboard lag when typing, change keyboard, same problem. Then about 3 months ago, video corruption, screens turning off. Did all the update drivers, bios update, switch monitors and cable dance, no solution. For example each monitor with same cable worked as second monitor on Dell laptop.
Call Dell under warranty, came to office and replaced mother board. Ok for about a week, then one monitor cutting off, then screen corruption started up again, but no keyboard lag. Concluded the Intel 530 graphics is a problem. Bought Radeon R7 250 2 GB video card, too big to install. Took off fan shroud and fan, use low profile bracket and install. No heat problem, running business apps only, one week so far and no problems at all.
livins
6 Posts
0
May 4th, 2017 01:00
Hi,
I have a similar issue with my Optiplex 3040, core i3 work station. I am trying to extend the the display, but things are not working. Only the monitor with DP -DP connection (Monitor 2) is detecting all the time, the other one (Monitor 1 ) is unable to detect. Here is my configuration :
Optiplex 3040
HDMI (OUT) DP (OUT)
| |
HDMI (Male) to VGA Female DP (IN) DELL monitor 2
converter
|
VGA Cable(MALE to MALE)
|
VGA (IN) Dell Monitor 1