Blender is not responding after minimizing
Open, IncompletePublic


System Information
OS: Windows 10 Home
CPU: Intel Core i7-6800K 3.4Ghz
RAM: 32 GB
GFX: ATI Radeon 480 RX

Blender Version
Blender: 2.78b, 2.78c

Short description of error
Blender stops respond after minimizing it by clicking on blender's taskbar icon

Exact steps for others to reproduce the error

  1. Start blender
  2. Make some changes (add couple of objects) to scene
  3. Minimize blender by clicking on BLENDER's TASKBAR ICON
  4. After it's minimized try to open it by clicking blender's taskbar icon again

Actual result
Blender app does not respond and stacked


OpenGL Error

I'm new here, but this has been happening on both my Windows 10 (ultimate) rigs on a very regular basis.
Minimize the blender program and its about 50/50 chance you lose all your unsaved work :(

Work machine:
xenon e5-2620 v4 CPU
w7100 firepro 8gb GPU
32gb RAM

Does this mostly in 2.78b and 2.78c, but occasionally happens in 2.78a

I realize leaving the window "unminimized" does the trick, but i would really like to see it be more stable.
I should note that im using a Wacom tablet, ive heard wacky things that crop up from those.

I was having the same problem.
I went to
User Preferences -->System --> Window Draw Method ---> and
UNchecked the box that says ... Region Overlap.

Then Save User Settings.

It seems to be helping... fingers crossed.

Aaron Carlisle (Blendify) triaged this task as "Incomplete" priority.Tue, Apr 11, 12:19 AM

Its highly likely that this bug is specific to your hardware/driver configuration.
These kinds of display issues are often caused by OpenGL driver bugs.

While its possible a software error in Blender, its worth checking if this functions correctly...

  • After upgrading graphics card drivers.
  • On a different system (with different hardware/drivers).
  • Using a Software OpenGL renderer...
    • On Linux, Official releases come with blender-softwaregl
    • On MS-Windows: Downloading 'opengl32.dll' from and copying it so its located in the same directory as 'blender.exe'

If this is a driver bug, or we can't link to this to an error in Blender's code, the report may be closed as a driver error,
so please help us determine whether this is a bug in Blender or not.

Not that this is a common issue for AMD GPUs (try doing a google search for program not responding on minimising)

Aaron Carlisle (Blendify) changed Type from Bug to OpenGL Error.