Stellarium 0.11.2 Very slow frame rate 0.00234 FPS

The frame rate being low is not in-and-of itself a problem. The application is written to slow frame rate down when the display is largly static.

Now, it seems that there is more than this going on in your case. If I understand what you are saying, there are times when the application runs normal, and is responsive?

Very low frame rates are an indication that the OpenGL hardware acceleration on your video card is not working for some reason. Please check your video card driver supports OpenGL. If it claims to, it might fallback to software rendering when it is asked to perform an operation it doesn't like. I've known this to be triggered by too-large or irregular sized textures, and very occasionally sometimes by shaders.

You could try to run Stellarium in safe mode and see if this will help (for Windows use the "Stellarium (No OpenGL 2)" option from the start menu, for other OSes run with the --safe-mode option), but I suspect the only option is to upgrade your video driver.

M

Hi Treaves,
Yes you are correct in thinking, that a small amount of times that I start the application and it runs without any problems at all and works like a dream, for as long as I want. Frame rate about 17 - 25 FPS

Most of the time it takes ages to start (2 - 3 mins)
Then if I put the cursor at the bottom of the screen to open the control panel I will have to wait about 2 mins for the panel to pop up.
Then if I click something I have to wait another two mins for it to happen
This long wait it true for any thing I do
It takes about 4 mins to close, two to wait for the panel to open and two more after clicking the close button

Its not the frame rate is self I am talking about its the resulting inability to use it when in that state.

Hi Matthew,
I have tried --safe-mode switch and there is no change
From the log file I noted :-
          OpenGL supported version: "2.1.2 NVIDIA 280.13"
          Qt GL paint engine is: "OpenGL"
I also suspect that there is something strange going on in the Driver
there are many other random ways that I totally lose control and have to kill the process to get control again
Interestingly I can coax it into life some times by using F11 to put stellarium into a window and drag the window to the other screen and then F11 to put it back into full screen, only some times this will kick it back into life, then it works fine.
I have the latest available driver I know of.

So it looks like its a new PC with a new Graphics card and a modern driver, unless someone can come up with a work around.

Many thanks for your help so far

PS

Without the --safe-mode option
The Log reports
          OpenGL supported version: "2.1.2 NVIDIA 280.13"
          Qt GL paint engine is: "OpenGL2"

just thought this might be of help

Hi

The above lead me to some more googling and the many articles regarding Unity/OpenGL and Games not working,
in turn that lead me to trying the Unity 2D option at startup (accessed by clicking the gear on the login box)

This has solved the problem

I can now run Stellarium and it works every time as long as I start up in Unity 2D

Thanks for all your help

Daniel

Thanks Matthew Gates, that solved my question.