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Cannot rotate the view
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Description

System Information
Operating system: Linux-4.15.0-65-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: TITAN RTX/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 415.27

Blender Version
Broken: version: 2.81 (sub 15), branch: m[[ | name ]]aster, commit date: 2019-10-12 15:33, hash: rB95f020c853d6
Worked: (optional)

Short description of error
I cannot rotate the view in any blender file I have (including the startup files) using the middle mouse button or widget. I have seen at least one similar bug reported
(https://developer.blender.org/T68963),
but my files do not change the orbital sensitivity to 0 when saved as in the aforesaid bug report.
Instead, my orbital sensitivity is set to 1.0 and no amount of adjustment on my part
seems to solve the issue (i.e. I set orbital sensitivity to 0.4, and the problem persisted).
This does not happen in version 2.80 stable release.

Exact steps for others to reproduce the error
Simply open the file I provided here and try to rotate the viewport. I do not know if you can replicate it - or if
it even has something to do with any particular file - it happens to all of them. so I attached a simple replica of
my general start up file.

Thank you for your time and hard work,

Details

Type
Bug

Event Timeline

Tried here also on a Linux machine with 2.81 Beta and 2.82 Alpha, view rotates just fine. Perhaps you accidentally changed the keymap to Industry Compatible? That one navigates using alt+mouse buttons instead of the middle button. Try loading the Blender keymap in user preferences.

I checked that too unfortunately, alt+mouse buttons didn't rotate it either - BUT FORTUNATELY - it is working now. I essentially wiped everything blender related from my
linux machine and downloaded the .tar file again and it worked just fine. I repeated this process several times - ALL GOOD. I actually couldn't replicate what had happened
earlier. So I suppose this is solved/invalid now. Still not sure what happened - but I imagine it was user error. Thank you for your help.

Nathan Letwory (jesterking) claimed this task.

Since you are able to rotate again I'm going to close this report. Thank you!