UltraWide monitor no longer QHD resolution after Catalina upgrade

My LG 49WL95C-W UltraWide monitor has been working great and I upgraded to Catalina last night on my MBP 2017 15" and now my resolution is like a large type edition. I can't get it to natively support QHD and it will only go to (3840 x 1080). I installed the latest LG Screen software and updated the monitor firmware and still no change. Any clue how to fix this so I can get back to QHD which is partially why I bought this monitor?

Posted on Oct 8, 2019 9:18 AM

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Posted on Oct 9, 2019 6:39 AM

I figured out a way to fix it with a free app from github called disable monitor. Download it, unzip, transfer to app folder and open. The icon will show up on your top menu and will allow you to choose whatever resolution you'd like, 5120 x 1440 for your particular monitor.


https://github.com/eun/disablemonitor

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26 replies

Oct 14, 2019 5:06 PM in response to aedencalvin

Hi there, same problem for me, though I tried the Disable Monitor and it didn't work. I seems the display needs to be connected at the time of removing the ID though it didn't work for me. Can't think of a different sequence of using the software, are you able to talk through the steps including the connections and powering/restarting devices in terms of order? I also can't see the display options by selecting the display icon in the top right panel - the software has been successfully installed though.


Any advice would be appreciated.


Also for the previous person commenting on the absence of specific resolutions )if you press option while clicking on scale - they all come up to select.


Cheers

Nov 27, 2019 8:33 PM in response to bitcoincash

Tested on Macbook Pro 15" Early 2018 and today newly on the MacBook Pro 16"


I used disablemonitor app to connect a 15 ft miniDP to DisplayPort for this display and the display was clear, and I just recently purchased this USB-C Type 15 ft cable and this cable does work with the display. I found it on Amazon, and while I was searching I had no idea that you actually can obtain very long cables for thunderbolt, they are optical cables, Corning makes a Thunderbolt 2 Optical cable, and there are a few others out there, but they are difficult to find or require a specialized quote.... you'd be looking at dropping $200-$1000


Amazon - USB C Type 15 foot cable: TetherPro USB-C to USB-C, 15039; (4.6m) ORG -

https://www.amazon.com/dp/B0794BL8CM/ref=sspa_dk_detail_0?pd_rd_i=B0794BL8CM&pd_rd_w=BlyFS&pf_rd_p=45a72588-80f7-4414-9851-786f6c16d42b&pd_rd_wg=EegsL&pf_rd_r=HCV714SYSCZ318C5JB1F&pd_rd_r=043b1b05-128c-45bc-957c-f55bc8e61d6e&smid=A3FR7YOQDCCAIT&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFUWVJPTzZDTERWSVEmZW5jcnlwdGVkSWQ9QTAzNzk1ODIyUzBZMDFXMEVSVTFNJmVuY3J5cHRlZEFkSWQ9QTAyNzE1ODUyMlZOSlZQT1lLRFZRJndpZGdldE5hbWU9c3BfZGV0YWlsJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ&th=1


Corning Thunderbolt and USB-C Cables:

https://www.corning.com/optical-cables-by-corning/worldwide/en/products/thunderbolt-optical-cables.html


Dec 2, 2019 8:27 PM in response to bitcoincash

I'm sorry to hear that you're stuck with the lower resolution. Yes, I read quite a few threads prior to purchasing the monitor and was not expecting to have a problem with a simple plug and play installation on the 15" because of the AMD graphics, I knew the 13" was not supported. LG does mention that it will not work at full resolution with the Intel's graphic chipset which simply does not support that resolution so unfortunately, I'm not sure how anyone could offer you a resolution for this short of using an eGPU.


This specific thread is titled : My LG 49WL95C-W UltraWide monitor has been working great and I upgraded to Catalina last night on my MBP 2017 15" and now my resolution is like a large type edition. I just wanted to let people know that if you have a 15", it does work and does not "scale" but displays at full resolution. It's a silly but necessary work-around for now.

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UltraWide monitor no longer QHD resolution after Catalina upgrade

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