ASUS ROG Swift PG278Q - Stuck in 24hz

[airimagma]

Hi everyone,

I am having some issues with my ASUS ROG Swift PG278Q.

Have had this monitor since August 2015 with no issues. Now, they monitor started presenting

issues.

The main issue is that the monitor is stuck on 24hz refresh rate.

Troubleshooting I already tested:

- Went to the Nvidia control panel but doesn't show any other option in the dropdown menu for the

refresh rates.
- Can't force another refresh rate through the "Customize" button. It shows me a warning saying

that is "Out of Range". I also tried forcing the refresh rate with a 3rd party app.
- After pressing the quick refresh rate change button that is on the right side panel of the

monitor, open ups the menu but flickers. http://imgur.com/jeA2tRe
- Tried 3 different Nvidia drivers. One from March 2018, the other from May 2018 and the last one

from Aug 2018.
- Tried buying a new DP cable (can't identify the manufacturer) but still the same issue than with

the original DP Cable that came with the monitor.
- Tried with another GPU (EVGA 1070ti), but same issue.
- Tried both PCI-e x16 sockets but same issue.

One noticeable thing is that, when I boot the PC, the BIOS manufacturer screen appears in 800x600.

If I enter the BIOS, it keeps that same resolution. It's the same default resolution I noticed

after I uninstalled the nvidia drivers and rebooted. It seems that in 800x600, the refresh rate

can go up to 60hz. Weird.

Things I stillhaven't tried yet:
- Connecting the monitor to another PC
- Connecting another monitor to this PC.
- A 3rd cable from a renowned manufacturer
- Format and install Win10

Note: Warranty for the product expired last month (yeah, great timing)

My PC:
- Display: ASUS ROG Swift PG278Q
- CPU: i7 4790k 4Ghz
- MoBo: ASUS ROG MAXIMUS VII HERO LGA 1150
- RAM: G.SKILL TridentX Series 16GB
- GPU: ASUS ROG-STRIX-GTX1080TI

If someone has any idea, or step I could try, it would be greatly appreciated.

Same issue: http://www.tomshardware.com/forum/id-3241805/refurbished-asus-pg278q-running-24hz.html
http://www.tomshardware.com/forum/id-3268397/desktop-computer-fine.html

 

[Glenwing]

Have you tried disconnecting the monitor from power for a minute?

 

[cl-justin]

Please try this monitor on another PC, and power cycle your monitor.

 

[jacob_latham]

Were you able to diagnose this? I have the same monitor having the same issues now. Talked to Asus customer support and they were pretty worthless. Since this has happened to so many people you would think it's a manufacturer defect and that they should be the ones responsible for fixing it. However they want to charge me $600+ to fix a 4 year old monitor.

I've tried multiple display port cables, I've connected it to another computer, connected another monitor (also supports 144hz) to my PC and it works fine. Only thing I haven't tried, like you, is to reinstall windows 10. Was thinking about seeing if the monitor would work in linux.

Let me know if you figured anything out.