Kerbal Space Program

I recently witnessed vanishing orbit tracks, in the manner described, too, on KSP-0.90 this time. The description doesn't say on which platform the bug appeared, but I have a strong suspicion that it would be Linux or Mac: On many non-English locales, there have been a multitude of bugs that could be circumvented by starting KSP with LC_ALL=C.

So I started KSP again with

LC_ALL=C ./KSP.x86_64

saved the settings, restarted it once again in the same way and the bug was gone (You need start KSP this way every time).

I think some critical setting, that can trigger this bug, is stored as a number using locale specific functions, which explodes in your face when you try to re-read that setting in a non-locale-specific fashion or vice versa.

Playing on Linux with LC_ALL=C, resolution 1920x1200 I also experience this issue whenever setting graphics to "windowed".

My Flight UI is set to small and changing the UI volume does not affect the problem.

Guys I think we need more info on this one, specifically GFX hardware and driver info.

For example I have not been able to reproduce this in any graphics mode with an Nvidia card (gtx650) and the proprietary Nvidia drivers (tested nvidia331 340 346 352) on Xubuntu Linux 15.04 and 15.10

All the reports I have seen except wernher's above have been on OSX, but unfortunately they have often been missing hardware/driver info.

There are a number of other OSX graphics issues currently (as of build 1028) and I suspect it's an issue with the Macbook Pro and similar, see #4939

What you should find with this issue is the orbit lines reappear when you zoom in, as there is a change in how the lines are rendered when the camera is near the planets and when it's further away, for example they will not render behind a planet when zoomed in, but they will when zoomed out due to the different render method.

If this can be tracked to specific hardware then the render method could be changed to avoid bugs in that hardware.

I'm getting it on my system.

Linux Mint 17.2
GTX 970 with 355.06 drivers
i5 3750k OC to 4.2

I've got a probe that I sent out into deep orbit and getting same result.

Noticed zooming in on Jool that there are no orbital indicators at all as you can't zoom in enough, but focusing on one of the moons allows you to do so.

Thanks Raath.

I wonder if this is related to the orbit lines becoming dotted/dashed when anti-aliasing is enabled ?

sal_vager wrote:

Thanks Raath.

I wonder if this is related to the orbit lines becoming dotted/dashed when anti-aliasing is enabled ?

I've gone through all the graphics settings including disabling anti-aliasing and it's none of those. And I mean every single setting. Took me a couple of hours.

Edit : Noticed also that the orbital lines disapear at the same time as planetary markers. Could be a lead? Whatever this bug is also effects mods. Remote tech lines also disapear at this zoom tick

I also experience this issue when I set 1900x1200 "Full Screen - Off". When I am in fullscreen mode it seems to work fine. Happy to run debugging steps if provided.

EDIT - Debian 8, Cinnamon desktop, R9-280X, fglrx.

EDIT 2 - Confirm that orbits work fine in 1900x1080 windowed view. At least on my system the bug only seems to happens on 1900x1200.