After installing 384.47 on a system with two 4K monitors connected by DisplayPort, I get an occasional flash/flicker on each monitor. The interval is random and sporadic, sometimes with 30sec between flashes and sometimes multiple minutes. Both monitors are affected, though they do not flash at the same time. It seems that the flashing is likely related to PowerMizer, as the flash always occurs after a decrease in the PowerMizer performance level. (Not every performance level decrease results in a flash though.)
Came here to report a similar problem. A single occasional flicker, seems the screen goes black and then flashes back. This is also a dual-monitor setup, (3rd monitor attached to the integrated gfx port). Fedora 25, GeForce GTX 750 Ti, driver version 384.47.
I can attach nvidia-bug-report.sh output when I figure out how to add attachments. nvidia-bug-report.log.gz (216 KB)
More testing indicates that this doesn’t seem to happen on my laptop with an NVS5400m and the integrated 1920x1080 display panel, so perhaps it only affects some combination of certain GPU generations, display bandwidth requirements, or number of displays.
I have the same flicker on F26 using single 4k DP monitor (384.47).
I’ve also seen the same flicker using the 381.xx branch, the issue isn’t present in the ‘long lived’ branch. nvidia-bug-report.log.gz (74.7 KB)
-Yes, 347.47 is the first driver where I have seen this issue.
-I have seen the issue on both Dell P2415Q (DisplayPort) and Dell U2212HM (DVI) monitors. I have not been able to reproduce the issue on my laptop with the integrated LVDS panel.
-KDE, with KF5 5.35 and Plasma 5.10.x with compositing turned on
-I will try to get a video of it later today, but I’m not sure a 30FPS camera will be able to pick it up since it is so fast.
-The issue seems to happen with PowerMizer reduces the GPU clock, so doing something to make the GPU clock increase and then waiting for it to decrease again helps to reproduce the issue. I see it rather often while just browsing the web with Chrome though.
-I initially saw the issue on a system with a GTX970 and dual Dell P2415Qs, but I later also reproduced it on a system with a GTX750 and a single Dell U2212HM. I have not been able to reproduce the issue on my laptop with an NVS5400M and the integrated panel.
-Nothing that should have any effect.
I faced the same issue. NVIDIA drivers version 381.22 had no such issue but this issue appeared after update to 384.47. I see random occasional flash/flickering on each of my monitors. I did not update any other software and hardware. I just updated 381.22 to 384.47 only. So I think this problem is caused by driver only.
However, I can provide more info about software/hardware I use everyday:
One video card: GeForce GTX 960.
Gentoo Linux, no DE, awesome WM, compton composer.
Two monitors connected to DisplayPort ports of my video card.
These monitors belong to one big screen, configured by XrandR.
My upper monitor: 1920x1080@60.00hz, DELL U2312HM.
My lower monitor: 1920x1200@59.95hz, DELL U2412M.
When using 384.47, the annoying flickering appears 30 or 40 times per hour on each of the monitors randomly. Right now I installed old driver 381.22 and I see no problems in this old version.
Hi all, Nobody yet shared video of this random occasional flash/flickering. We have fixed this issue but want to confirm by checking video. Can someone please post video recording of this issue?
@sandipt, it’s difficult to capture a video unless you record for long hours because it is very random.
But from what I noticed, it mostly only happens at low GPU load.
That sounds about right. The bug fix Sandip referred to is for a glitch that happens when the GPU drops into its lowest power state. You can watch the PowerMizer page in nvidia-settings to see if the glitch is correlated with a drop to power level 0. If so, then this does sound like the same bug.
Upgraded to 384 yesterday and am experiencing the same issue. I have a GTX960, single monitor setup, using Ubuntu 16.04 with unity.
Every couple of minutes I get a black flicker, it’s completely random and doesn’t depend on what’s happening on the screen, could be typing, or gaming, idling or watching a video.
Sometimes the flicker is not full screen but containted to just one window.