Broken GSync Support since driver 470 (monitor modulates between 0 or 144hz and flickers-black)

Graphics / Linux Linux
1

Hi, as the title suggests, this problem has been persisting ever since it was first reported and closed. I can confirm that this problem has not been fixed for me. On the same computer with a Windows drive, this problem is not present at all.

The screen flickers when the nvidia driver initalizes after the boot sequence commences, and persists all the way into the DE. The only way to make the display useful is to use a lower refresh rate, i.e., 120hz or below. At the reported 143.97Hz refresh rate, the screen constantly flickers between 0 and 144hz.

Please let me know if you want any more details from my side. Thank you!

Details:
Card: RTX 2080 Super
Connection type: DP
OS: Fedora 36
Driver version: 515.57
Monitor: LG GL850A-B
nvidia-bug-report.log.gz (337.8 KB)

2

As I’m a new user and couldn’t upload more than two links in my post, here is the link to the first reported bug report: NVIDIA 470.74 Breaks Gsync (Compatible) Support (Monitor Modulates between 0 or 144hz and Flickers black)

3

Hi @aplattner , would you know if this problem has been reported before? If not, how can I assist you with providing more info from my side about this issue? Thanks!

4

Hi,

So apparently I have found a fix for this (albeit a bit strange for me). I had to swap my DP cable from a long one to a short one and that apparently fixed this issue. What I don’t understand is how come this same exact cable works just fine on Windows, but not on Linux, and how it worked just fine on Linux in the past 🤷

If someone would know why this happen, I would love to know more about it! As such, I’m also going to close this ticket.

Thanks!

5

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