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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.

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

What People Are Saying

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
Rated 5 out of 5 by from Great Monitor An excellent monitor with great resolution and beautiful bright colors and text
Date published: 2017-04-11
Rated 5 out of 5 by from Fantastic I "needed" the size of monitor to have an easy way of comparing files next to each other. In a finance world something you do on a daily basis. I was so thrilled that I purchased it also for my private use. I recomend it to every one. Price and Quality is superb.
Date published: 2017-03-23
Rated 5 out of 5 by from excellent monitor Everything you want in a monitor. I'm thinking about purchasing another one or possibly 2! I would love to get the LG soundbar with all 3. I wish there was a special or package deal.
Date published: 2017-03-02
Rated 3 out of 5 by from Looks good, but... Good monitor. Definetly looks good. However its downfall is that it has volume control included with the monitor, but there are no speakers whatsoever on the monitor. Okay, that isn't a complete deal breaker most hook up speakers to their monitors anyway. What really got me was the monitor is advertised as 75hz. Which technically it is (in lower resolutions) not in native 2560×1080. To obtain the 75hz refresh rate at the native 2560×1080 resolution you have to overclock the monitor. Most considering a higher hz monitor are looking for a fps (frames per second) boost for gaming on games that use Vsync.
Date published: 2017-02-24
Rated 4 out of 5 by from Great screen! I just purchased my wide monitor finally. I wanted this monitor so bad. I am happy I have made this purchased. I love the style. I have it side by side with my other monitor. I can say its an great addition to my desk. I would have given it 5 stars but I can't get the display resolution to work properly. My screen seems stretched.
Date published: 2017-02-19
Rated 5 out of 5 by from I love it!!! I really loved it, it's a great product, it has very great colors, if you play with the menu to accommodate both the contrast and the brightness you can have a better experience, I recommend for games to have the maximum contrast and brightness at 75% so that Do not disturb the eyes, and for normal use of the PC have 50% contrast and 25% brightness since prolonged use really tires the eyes a lot. In short it is a great product and I do not regret buying it bought it
Date published: 2017-02-10
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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.

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: 2017-03-22

How do I set up split screen on this monitor using a PC?

Asked by: TEKh14
Press the JOYSTICK Button, located under the center of the monitor. Move the JOYSTICK to the left to access the MENU options. This setting should allow configuration for the screen settings. For additional questions in this matter, please contact our Customer Interactive Center at 800-243-0000.
Answered by: NeilE
Date published: 2017-04-21

Is this monitor compatible with the new Apple MacBook Pro 2016 laptop. 

Asked by: Brad B
The LG 25" Class 21:9 UltraWide® Full HD IPS LED Monitor (25" Diagonal), Model # 25UM58-P has 2 x HDMI 2.0 ports on it for connectivity...^IFV
Answered by: LGJoel
Date published: 2017-04-21

I have this monitor and it can't achieve 75hz unlike its 25in little brother. When you try to use 75hz there's white lines in the screen, should I return this Monitor?

Asked by: Cc06
i managed to achieve 75hz. just make sure you plug the port to the HDMI1 port. not the HDMI2. there should be 2x HDMI ports at the back. use the one below
Answered by: BBRet
Date published: 2017-04-21

Does this monitor have built in speakers?

Asked by: Kazi67
We appreciate your interest in this monitor. This model does not have any internal speakers.
Answered by: NeilE
Date published: 2017-03-22
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