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34" Class 21:9 UltraWide® Full HD IPS LED Monitor (34" Diagonal)

  • 34UM58-P

Key Features

  • 21:9 UltraWide FHD IPS Monitor
  • sRGB over 99%
  • On-Screen Control with Screen Split 2.0
  • Game Mode
UltraWide IPS

21:9 UltraWide®
Full HD IPS Display

The UltraWide 21:9 aspect ratio makes games and movies more immersive than ever. The clarity of 1080p pixel Full HD resolution with IPS is a game-changer. Simply put, from any viewing angle, everything looks more crisp and detailed in Full HD.

sRGB Over 99%

sRGB Over 99%

sRGB is the standard color space of ideal color reproduction. So, with over 99% coverage of the sRGB spectrum, this LG monitor is a great solution for professional photographers, graphic designers or anyone looking for highly accurate color.*

On-Screen Control

On-Screen Control

On-Screen Control puts a host of essential monitor settings into a handy window for quick, easy access. Volume, brightness, picture mode presets, Screen Split 2.0 and more can now be adjusted with just a few clicks of the mouse, instead of hard buttons on the monitor.

Learn More


Watch how the On-Screen Control feature can help configure your display for maximum organization and efficiency.

On-Screen Control

Software download required to enable OnScreen Control. For download details, visit:

On-Screen Control

Screen Split 2.0

Customize your monitor layout for multitasking with the latest version of LG Screen Split. Resize and display multiple windows at once, with 14 options including four different picture-in-picture (PIP) choices.

Game Mode 29UM58-P

 Game Mode 

Set your game mode optimal gaming conditions. There are 3 gamer modes, 2 First-Person-Shooter modes and even and RTS pre-set mode so you can choose the best mode for you.

Black Stabilizer 29UM58-P

Advanced Gaming Features

Serious gaming features for serious gamers. Quickly optimize monitor settings to activate Black Stabilizer to reveal superior detail in dark scenes while the Dynamic Action Sync feature assures smooth, fluid gaming action.

Screen Size Class (diagonal) 34"
Panel Type IPS
Color Gamut (CIE1931) sRGB over 99%
Color Depth (Number of Colors) 8bits, 16.7M
Pixel Pitch (mm) 0.312 mm x 0.310 mm
Response Time 5ms GTG
Refresh Rate 75Hz
Aspect Ratio 21:9
Resolution 2560 x 1080
Brightness (cd/m2) 250 cd/m2
Contrast Ratio Mega
Viewing Angle 178 / 178
HDMI (ver 1.4) 2
Type Adapter
Input 100~240V
Picture Mode Yes
Ratio Wide, Original
Key Lock Yes
Response Time Control Yes
Game Mode Yes
DAS Mode Yes
Flicker Safe Yes
Smart Energy Saving Yes
Automatic standby Yes
Reader Mode Yes
Six Axis Control Yes
Color Calibrated Yes
Screen Split 2.0 (in OSC) Yes
My Display Preset (in OSC) Yes
OnScreen Control (OSC) Yes
Dual EDID (H/W) Yes
Tilt (Angle) -5~20 Degree
Without Stand (WxHxD) 32.7" x 14.7" x 2"
With Stand (WxHxD) 32.7" x 18.1" x 8.4"
Shipping Dimensions (WxHxD) 35.6" x 20.2" x 5.3"
With Stand Weight 15 lbs
Shipping Weight 19.6 lbs
VESA® Size (mm) 100 x 100
Power Cord Yes
TCO Yes (6.0)
UL(cUL) Yes
TUV-type Yes
CCC (for China) Yes
ErP Yes
Windows Yes
UPC 719192199385

What People Are Saying

Rated 5 out of 5 by from Great with my Surface Pro 4 All I needed was to pick up a decent mDP - HDMI cable and it worked a treat.
Date published: 2017-07-19
Rated 5 out of 5 by from Awesome screen size and resolution Great monitor, screen size and resolution. Only drawback is that I haven't been able to get 75Hz refresh when using HDMI with laptop.
Date published: 2017-07-12
Rated 1 out of 5 by from Flickering after 2 months of purchase This monitor is really cool for its width and software that allows you to split screen in many different ways. However, the monitor becomes useless after a couple of months because it flickers so poorly that you cannot actually look at it without getting a headache. It has become useless.
Date published: 2017-06-27
Rated 5 out of 5 by from AMAZING! I had been eye balling a LG widescreen for a while and finally decided I would just go ahead and buy it. Ended up finding the 34" for not much more than the 29" was. Oh golly am I glad I got the bigger screen, I absolutely love it. I only use it for work, where I have to reference several screens at once, it has made me much more efficient! I am still playing with the spiting options to find the perfect one for my application but they all work really well. Yet again LG made a product perfect for me that I absolutely love!!!
Date published: 2017-06-20
Rated 3 out of 5 by from Nice monitor, when it works that is I purchased the original about sixteen months ago. Then last fall it started to flicker, REALLY flicker! It is intermittent, but I've put in back in it's box, store it in my closet. I'm going to call them tomorrow, but don't expect much help. I've been kicking around the LG 55" OLED, but given my experience with the 29UM58 causes me to wonder if LG just makes unreliable TV (and monitors).
Date published: 2017-05-25
Rated 5 out of 5 by from Absolutely the best! I have purchased several pairs of monitors for my editing bay. This one blows every other option out of the water. No more nasty screen split in the way. Very easy on the eyes. Fantastic anti-glare and far less power consumption!
Date published: 2017-05-04
Rated 1 out of 5 by from dont buy bad monitor dont buy bad monitor dont buy bad monitor dont buy
Date published: 2017-04-17
Rated 5 out of 5 by from Surface Pro4 and monitor I tried two mDP adapters before one worked and allowed me to change the display to 2560X1080 on the Surface Pro4. I originally used an active mDP and the Surface Pro only sent lower resolution setting so the monitor had bars on the left and right. I also used the wireless mdp which I purchased from the Microsoft store and had the same issue. If you want to use the entire LG display at 2560X1080, then you need an inactive mDP. I still have an issue with using screen splits with the Surface Pro4. It only works if I "show only on display 2" or "extend the display." The problem with that is I get bars on either side and can't use the full resolution of the monitor. The monitor only displays the full resolution if the Surface Pro display is set to "duplicate display." It's the best I'm going to get I guess. I tested a computer with Windows 10 and it worked fine when I selected second screen only. I was able to use the split screen settings from LG. I guess it's just something funky with the Surface Pro. The only drawback is I wish it had built in speakers but I can use the computer, headphones or bluetooth speakers. Overall fantastic display with some quirks when using the Surface Pro.
Date published: 2017-04-15
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We're here to support you with our product.

View 34UM58-P Product Support

Contact us for any support inquiries.


Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

I have a 34UM58 UltraWide Screen Monitor and when I plug it into my MacBook Pro the screen has a black border around it and it is not full screen. I can't find the settings for over/under scan. Also the screen is not clear. How do I resolve this issue?

Asked by: JonEMc
I do apologize about the issue you are experiencing with the monitor. It is suggested to check if the video card's resolution or frequency on the MacBook is within the range allowed by the monitor, as this can cause poor picture quality. Also ensure the monitor is set to the recommended (optimal) resolution in Control Panel > Display > Settings. If this does not correct the issue, Please contact us at 800-243-0000.
Answered by: NeilE
Date published: 2017-07-28

What is the Refresh Rate of the monitor?

Asked by: Anonymous
The technical specs state that it is 75Hz... But I can't get over 60Hz...
Answered by: Travis1
Date published: 2017-08-03

does this monitor support dual link

Asked by: doglife
The only inputs on the LG 34" Class 21:9 UltraWide® Full HD IPS LED Monitor (34" Diagonal), Model # 34UM58-P are the HDMI (ver 1.2) ports. It does not have any DVI- Single and dual link or DVI-D dual link ports on it...^IFV
Answered by: LGJoel
Date published: 2017-07-20

Has it got Integrated speaker?

Asked by: Mattia
Our offices, in the United States, do not have product information for Italy. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2017-07-05

Just bought today. Keeps saying no signal. Entering power saving mode shortly. Changed, ports, chords, turned power off and on. Is this just no good? Do I need to box it up and return it or is there a solution ?

Asked by: Kelvin Kevin
We regret the inconvenience you have experienced with this monitor. If the external device is active, and switching input ports does not activate the signal, and all cables are connected securely, then there could be a bad component in this monitor. Please contact our Customer Interactive Center at 800-243-0000 to make proper service arrangements.
Answered by: NeilE
Date published: 2017-04-17

I bought the lg ultra wide 21:9 29UM58-P and I lost my power cord. Where Can I Buy Another Power Cord?

Asked by: Kingdk_
Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at The part number for this item is: EAY62710711.
Answered by: NeilE
Date published: 2017-04-12

I understand that this model does not have speakers, however when I use this with my laptop, I lose all sound including through my laptop. What are my options for an easy fix?

Asked by: Cjack1016
On the screen, in the bottom right hand corner, find the speaker icon, left click the icon and it will give you a drop down menu from which you can opt for the computer speakers instead of the monitor.
Answered by: bww883
Date published: 2017-04-07

Is this a power saving monitot?

Asked by: Paeno
The LG 25" Class 21:9 UltraWide® Full HD IPS LED Monitor (25" Diagonal), Model # 25UM58-P has a Smart Energy Saving feature listed as a special feature under its specifications. This feature has three settings, High, Low and Off. High enables the Smart Energy Saving so you can save with an energy-high efficient function. Low allows to you save energy with a energy-low efficient function and off disables the Smart Energy Saving...^IFV
Answered by: LGJoel
Date published: 2017-06-25
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