Diagonal line distortion and tearing issues

[Fastfishy2]

I am using a brand new Gigabyte P55G laptop. It has a GTX 960m GPU and is using the drivers it shipped with on recommendation of my local shop.

Before I start, may I state that this issue appears to only affect the gameplay of Kerbal space program. No other games seem to be affected while playing. This is also my second laptop of this identical model after the first one was taken in for a different issue.

I'm fairly convinced this is a software issue. What happens is I will get a horizontal line distortion from the top left hand corner down to the centre of the screen and there it will stop. Seems to be noticeable when moving camera view. However it seems I am unable to capture it in a screen shot. I would think it was a hardware issue if it was not only affecting this game and it's also the second laptop of this model

 

Any help appreciated. I can provide more details if needed.

[sal_vager]

Hi @Fastfishy2, KSP should not be showing what you describe and does not for other players, so this is not a know issue, sorry.

We will need more information from you to diagnose this, such as your output_log.txt, KSP.log, settings.cfg and your dxdiag hardware report, see here for info on these.

 

[Fastfishy2]

11 hours ago, sal_vager said:

Hi @Fastfishy2, KSP should not be showing what you describe and does not for other players, so this is not a know issue, sorry.

We will need more information from you to diagnose this, such as your output_log.txt, KSP.log, settings.cfg and your dxdiag hardware report, see here for info on these.

 

Hi,

I don't know how to put the output_log or other files into my replies (sorry!)

After some research, diagonal screen tearing seems to be an issue with numerous Nvidia based gaming laptops and chipsets such as the GTX 960m which I have, although not all with this chip are affected. I have seen at least one person say that kerbal space program is one of the select games that can be affected by this.

My specifications:

i7-6700HQ

16gb DDR4 2133mhz

GTX 960m 2gb GDDR5

128gb M.2 SSD

1tb HDD @ 7200RPM

1080p 16:9 screen (14")

 

I am running the latest steam version of KSP non-modded.

[sal_vager]

Hi @Fastfishy2, you can upload the files to a site such as dropbox.com and post the share links here.

The specifications that are most interesting to me are your graphics driver version and install date, though you can just check for and install the latest driver here (assuming you are using the latest version of Windows) and see if that helps.

What you describe sounds like a vertical sync issue, you can try disabling V-sync on KSP, in the Nvidia control panel, or make sure your refresh rate in the Nvidia control panel is the same as your screen, it's usually 60hz.

Though if there is a fault with the laptop it would be better to have it serviced under warranty.

[Fastfishy2]

Okay, so:

- It's a known issue for Nvidia 8xxM and 9xxM chipsets in laptops because of the hybrid graphics config.

Installing the latest driver did not help however disabling V-sync but leaving the frame limiter at 60 resulted in a fix to the problem.

Happy to report my KSP is running normally now.