Page MenuHome
Create Task
Maniphest T51917

Grid display bug on some Intel integrated GPUs on Linux
Closed, ArchivedPublic
Actions

Description

System Information
Linux Mint 18.1 (x64) with integrated graphics ("Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)" as reported by lspci). lsmod reports "i915" loaded.

Blender Version
Broken: all 2.7x

Short description of error
The viewport grid is being distorted in some cases, especially when setting higher values for "Lens" (e.g. 90), then zooming in.
Tried on multiple computers, but only those with Linux + Intel integrated GPUs seem to be affected, so it might be a driver bug. However, there is no newer driver available and also installing the latest drivers from Oibafs PPA (https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers) did not solve the problem.

The bug also happened inside a Windows 7 x64 Virtual Machine (VirtualBox) running on the same notebook.

Meshes are not affected.

Here's a video of the bug:
https://youtu.be/43LB_KJZONI

Exact steps for others to reproduce the error
Open Blender, unhide Numbers panel, enter "90" for Lens, then zoom in.

Event Timeline

Thomas Radeke (ThomasR) created this task.Jun 28 2017, 2:05 AM
Ray Molenkamp (LazyDodo) added a subscriber: Ray Molenkamp (LazyDodo).Jun 28 2017, 4:20 AM

I can't reproduce on an actual win7 machine, however blender ships on linux with a blender-softwaregl script in the blender folder, try starting blender with that and see if that eliminates the problem.

Bastien Montagne (mont29) changed the task status from Unknown Status to Unknown Status.Jun 28 2017, 10:08 AM
Bastien Montagne (mont29) claimed this task.
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).

Thanks for the report, but unfortunately this is an old known issue with some buggy OpenGL drivers (old Intel ones in particular, i915 is very low-end and old integrated GPU…), we cannot do anything about it on our side. You may check those points though:

  • Try to tweak OGL settings in UserPreferences, System tab.
  • Try to tweak your GPU driver settings (e.g. try different values between 'performance' and 'quality' if you have such slider, etc.).