Unable to look up screen scale and Unexpected physical screen orientation in Xcode 10

Question

I have recently updated Xcode to version 10, and now my console displays:

MyApp[1618:133310] [AXMediaCommon] Unable to look up screen scale
MyApp[1618:133310] [AXMediaCommon] Unexpected physical screen orientation
MyApp[1618:133310] [AXMediaCommon] Unable to look up screen scale
MyApp[1618:133310] [AXMediaCommon] Unable to look up screen scale
MyApp[1618:133310] [AXMediaCommon] Unexpected physical screen orientation

This only happens when I am running the app in the simulator. I have not changed my code since updating, and nothing appears to have broken in the app. What do these logs mean, and how can I resolve them?

scale/zoom failed to change the logs being output (for the iPhone 8 simulator I did zoom, 100%, 75%, and 50% with no effect on the logs). — Pasosta, Sep 19 '18 at 16:41
I see the same logs on Xcode 10 with the ***iPhone XR*** simulator. No issues with ***iPhone X***. — vmanjz, Oct 06 '18 at 16:00

score 17 · Answer 1 · answered Mar 05 '19 at 05:16

17

I've met the same problem. Finally I find out that this is because I accidentally resize the simulator's screen using my mouse cursor. By quiting and restarting the simulator my problem is solved.

Hope the aforementioned information helps.

answered Mar 05 '19 at 05:16

Woody Huang

462
5
11

No need to restart the simulator. You can do this pressing shortcut: cmd+1 – Zia Jul 17 '19 at 10:13
had this problem, yes this fixed it for me, i just manually sized the simulator to max size, and then quit, and restarted and all logs didn't come back :) – A O Oct 30 '19 at 02:55

score 9 · Answer 2 · edited Aug 09 '19 at 02:40

9

This won't answer your original question, but it might relieve your eyes. A caveat to this answer however is that it disables all NSLog statements.

Do the following to suppress - all NSLog statements including - the warning: Unable to look up screen scale:

In Xcode, go to Product - Scheme - Edit Scheme, select 'Run' on the left side ...

... and add OS_ACTIVITY_MODE with value "disable" in the Environment variables section.

edited Aug 09 '19 at 02:40

JerryZhou

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answered Oct 27 '18 at 17:29

gbroekstg

1,055
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5

Warnings are gone - thanks, but is it safe to set this Environment variable to `disable`. What about other possible log entries, exceptions, etc.? – jaPawel Dec 08 '18 at 01:34
3

what does it mean? – X.Y. Dec 17 '18 at 07:03
32

OS_ACTIVITY_MODE disables all NSLog statements, you should really include that as a big caveat for writing a answer like this. – Claus Jørgensen Jan 12 '19 at 04:14
11

This answer eliminates the symptom but is completely unhelpful in understanding the underlying problem. I wish I could down vote it more than once. – Jim Mar 02 '19 at 21:02
I'm going to link to this answer from another question. I'm going to edit the answer to reflect these comments. – dlpolanco May 10 '19 at 20:56
Also related to this problem: https://stackoverflow.com/questions/50701321/xcode-error-on-simulation-mgisdeviceoneoftype-is-not-supported-on-this-platform – dlpolanco May 10 '19 at 21:18

score 5 · Accepted Answer · answered Jul 01 '19 at 15:40

5

It could sounds dummy, but these warning appeared me after move the simulator previously rendered from the Macbook screen, to a wider external screen.

I solved it just restarting the simulator in the external screen. My 2 cents.

answered Jul 01 '19 at 15:40

Ricardo Isidro

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score 2 · Answer 4 · answered Jul 26 '19 at 20:25

2

I encountered this issue after running some UITest from a gitlab-runner.

The simulator got into this state and the only way to solve it was to go to Hardware -> Erase all content and settings

answered Jul 26 '19 at 20:25

Hugo Alonso

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Ramin · Answer 5 · 2019-05-17T12:47:08.363

1

Resizing the simulator's screen size to actual device size resolved this for me:

Cmd+1 is the shortcut.

edited May 17 '19 at 12:47

answered May 17 '19 at 12:38

Ramin

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score 1 · Answer 6 · answered May 21 '19 at 07:13

1

I got the issue, when I was running on iOS 12.2 and MacOS Majove (Version 10.14.4) Just change to iOS 11.4 and everything working perfectly.

answered May 21 '19 at 07:13

Cường Nguyễn

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score 0 · Answer 7 · answered Jul 06 '19 at 01:03

0

I've experienced something similar. If restarting simulator doesn't do the trick, check your UI test code. Make sure your setup calls super.setup() somewhere:

override func setup() {
    super.setup()
    // ....
}

answered Jul 06 '19 at 01:03

skim

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Unable to look up screen scale and Unexpected physical screen orientation in Xcode 10

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