macOS automatic graphics switching does not use use more powerful GPU for Blender #71342

New Issue

Sebastien Loss · 2019-11-04T17:15:19+01:00

Sebastien Loss commented

2019-11-04 17:15:19 +01:00

System Information
Operating system: MACOS 10.15.1
Graphics card: Radeon Pro 560 4 Go / Intel HD Graphics 630 1536 Mo

Blender Version
Broken: 2.80 ( stable official )
Worked: (optional)

Short description of error

Blender 2.8 viewport ( and UI ) performance is very bad.
On macOS Mojave ( no problems ).

BUT ! If I run "Affinity Designer" and open/create document, just after that you can launch blender 2.8 and voilà, good performances are back until next machine restart ??? It seems Affinity Designer make something that allow to Blender o access CG card , not intel HD Graphics

Exact steps for others to reproduce the error

Reproduced on two MacBook Pro 2017 and 2019 with macOS Catalina 10.15.1

restart your computer
launch blender 2.8
Turn around default cube scene or a more complex scene. Note poor performances.
Close blender
Run Affinity designer and create new document ( important, if not, magic doesn't happen )
You can close Affinity or not.
Go to blender 2.8. Now blender run smoothly.

Thanks

**System Information** Operating system: MACOS 10.15.1 Graphics card: Radeon Pro 560 4 Go / Intel HD Graphics 630 1536 Mo **Blender Version** Broken: 2.80 ( stable official ) Worked: (optional) **Short description of error** Blender 2.8 viewport ( and UI ) performance is very bad. On macOS Mojave ( no problems ). BUT ! If I run "Affinity Designer" and open/create document, just after that you can launch blender 2.8 and voilà, good performances are back until next machine restart ??? It seems Affinity Designer make something that allow to Blender o access CG card , not intel HD Graphics **Exact steps for others to reproduce the error** Reproduced on two MacBook Pro 2017 and 2019 with macOS Catalina 10.15.1 - restart your computer - launch blender 2.8 - Turn around default cube scene or a more complex scene. Note poor performances. - Close blender - Run Affinity designer and create new document ( important, if not, magic doesn't happen ) - You can close Affinity or not. - Go to blender 2.8. Now blender run smoothly. Thanks

Sebastien Loss commented

2019-11-04 17:15:19 +01:00

Added subscriber: @captaincavern

blender-admin commented

2019-11-04 17:15:19 +01:00

#72187 was marked as duplicate of this issue

Habib Gahbiche commented

2019-11-04 19:28:43 +01:00

Added subscriber: @zazizizou

Habib Gahbiche commented

2019-11-04 19:28:43 +01:00

Thanks for reporting.

I don't have Affinity Designer so I can't reproduce the issue exactly, but could you disable 'automatic graphics switching' - [x] and see if you can reproduce the issue that way?

https://support.apple.com/en-us/HT202043

Thanks for reporting. I don't have Affinity Designer so I can't reproduce the issue exactly, but could you disable 'automatic graphics switching' - [x] and see if you can reproduce the issue that way? - [x] https://support.apple.com/en-us/HT202043

Sebastien Loss commented

2019-11-04 21:27:54 +01:00

Indeed, Blender stay on integrated GPU. Affinity designer trick was found working with it .I notice Blender runs smoothly.
I disable 'automatic graphics switching' , and , as planned, blender run normally without running AD .
I saw this report https://developer.blender.org/T60043. This is the same bug.
Simple : blender ( or system ) do not automatically switch to best GPU with Catalina :)

Indeed, Blender stay on integrated GPU. Affinity designer trick was found working with it .I notice Blender runs smoothly. I disable 'automatic graphics switching' , and , as planned, blender run normally without running AD . I saw this report https://developer.blender.org/T60043. This is the same bug. Simple : blender ( or system ) do not automatically switch to best GPU with Catalina :)

graham krenz commented

2019-11-15 22:55:45 +01:00

Added subscriber: @grahamkrenz

graham krenz commented

2019-11-15 22:55:45 +01:00

I'm on an iMac iMac (Retina 5K, 27-inch, Late 2015), 3.2 GHz Quad-Core Intel Core i5, 32gb ram

Blender is significantly slower, and since Catalina update, auto-save is not functioning, even if new folder is designated. I've reproduced this on an identical iMac, and experience both performance lag to the extreme, and autosave not working correctly. I am stock, no add-ons active at this time to test.

I'm on an iMac iMac (Retina 5K, 27-inch, Late 2015), 3.2 GHz Quad-Core Intel Core i5, 32gb ram Blender is significantly slower, and since Catalina update, auto-save is not functioning, even if new folder is designated. I've reproduced this on an identical iMac, and experience both performance lag to the extreme, and autosave not working correctly. I am stock, no add-ons active at this time to test.

Brecht Van Lommel changed title from ~~Blender is very slow on MacBook Pro / Catalina. Affinity Designer make Blender faster~~ to macOS automatic graphics switching does not use use more powerful GPU for Blender

2019-12-06 18:37:37 +01:00

Brecht Van Lommel commented

2019-12-06 18:37:48 +01:00

Added subscribers: @blenderrocket, @sebbas

blender-admin commented

2019-12-06 19:12:44 +01:00

This issue was referenced by dd4b98133e

This issue was referenced by dd4b98133eb861f28053e7464574254d3cd9e594

Brecht Van Lommel commented

2019-12-06 19:36:14 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2019-12-06 19:36:14 +01:00

Brecht Van Lommel self-assigned this 2019-12-06 19:36:14 +01:00

Brecht Van Lommel commented

2019-12-06 19:37:21 +01:00

I've committed a fix now, but can't test myself since I don't have a dual graphics system. So if it's not fixed in tomorrow's daily build, let us know.

@grahamkrenz any issue with autosave would be unrelated to this, and requires its own bug report.

I've committed a fix now, but can't test myself since I don't have a dual graphics system. So if it's not fixed in tomorrow's daily build, let us know. @grahamkrenz any issue with autosave would be unrelated to this, and requires its own bug report.

Wouter Stomp commented

2019-12-07 10:47:21 +01:00

I can confirm it has been fixed. The moment Blender starts the system switches to the discrete GPU. Thanks!

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macOS automatic graphics switching does not use use more powerful GPU for Blender #71342