Selection of either the Main Display or Display 2 results in the display on the Main Display (the one with the macOS Dock).
When these preferences are toggled, they are updated in the user-level file (0 for Main, 1 for Display 2), but the display used does not change, and nor does the system-level file.
Lindsey.
Hi Lindsey,
(I split this in to its own discussion.)
Since it sounds like the preferences mechanism is working correctly, we need to start considering other possible causes. Some questions:
Thanks,
Chris
Hi Chris,
This issue was just on a single Mac.
It followed an upgrade from High Sierra to Catalina. We did not install a
new version of Mworks (though we later tried reinstalling to see if it
would help- it didn’t) or replace/reconnect the displays (I’m not sure if
this was ever tried).
Lindsey.
Hi Lindsey,
It followed an upgrade from High Sierra to Catalina. We did not install a new version of Mworks
OK, that’s useful info. What version of MWorks are you using on that machine?
Chris
MWorks was 0.10 (a nightly). Same as on the other computers.
Lindsey.
Hi Lindsey,
I created a little command-line utility that prints out some info about all the connected displays. I’m hoping it will shed some light on what’s happening here.
You can download the tool from Dropbox. After unzipping it, run it from Terminal. For example, here’s what happens when I run it on my iMac:
$ ./screeninfo
Screen 0:
Name: Built-in Retina Display
Direct Display ID: 1
Frame: {{0, 0}, {1920, 1080}}
Vendor number: 0x610
Model number: 0xA04C
Serial number: 0xFD626D62
Is main display? Yes
Is active? Yes
Is in mirror set? No
Screen 1:
Name: LED Cinema Display
Direct Display ID: 2
Frame: {{-1920, -120}, {1920, 1200}}
Vendor number: 0x610
Model number: 0x9236
Serial number: 0x274680D
Is main display? No
Is active? Yes
Is in mirror set? No
Can you run this on your problematic machine and send me the output?
Thanks,
Chris
Hi Chris,
Here’s the output:
Screen 0:
Name: DELL D2015H
Direct Display ID: 725364104
Frame: {{0, 0}, {1920, 1080}}
Vendor number: 0x10AC
Model number: 0xF063
Serial number: 0x41333549
Is main display? Yes
Is active? Yes
Is in mirror set? No
Screen 1:
Name: DELL 2009W
Direct Display ID: 722492366
Frame: {{1920, 30}, {1680, 1050}}
Vendor number: 0x10AC
Model number: 0x4042
Serial number: 0x414E4B4C
Is main display? No
Is active? Yes
Is in mirror set? No
Also- I can’t test the other issue with dac_cycle until we solve this one because it’s the same computer…
Lindsey.
Hi Lindsey,
Here’s the output:
Thanks. Unfortunately, that all looks perfectly reasonable, so it doesn’t really help us.
Also- I can’t test the other issue with dac_cycle until we solve this one because it’s the same computer…
I don’t understand. dac_cycle just runs in Terminal. How does the display issue affect it?
However, it’s interesting that the same machine is exhibiting both of these weird issues. Is this a Mac mini? Is it using an external GPU?
If you don’t mind, could you run the following command in Terminal on that machine and send me the output?
/usr/sbin/system_profiler -detailLevel mini SPHardwareDataType SPDisplaysDataType SPUSBDataType
Thanks,
Chris
Sorry- I was wrong about not being able to test things on this Mac- I can. And dac_cycle.mwel still doesn’t work.
Here’s the output of that command:
Hardware Overview:
Model Name: Mac mini
Model Identifier: Macmini6,2
Processor Name: Quad-Core Intel Core i7
Processor Speed: 2.6 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Hyper-Threading Technology: Enabled
Memory: 8 GB
Boot ROM Version: 422.0.0.0.0
SMC Version (system): 2.8f1
Graphics/Displays:
Intel HD Graphics 4000:
Chipset Model: Intel HD Graphics 4000
Type: GPU
Bus: Built-In
VRAM (Dynamic, Max): 1536 MB
Vendor: Intel
Device ID: 0x0166
Revision ID: 0x0009
Metal: Supported, feature set macOS GPUFamily1 v4
Displays:
DELL D2015H:
Resolution: 1920 x 1080 (1080p FHD - Full High Definition)
UI Looks like: 1920 x 1080 @ 60 Hz
Framebuffer Depth: 24-Bit Color (ARGB8888)
Display Serial Number: FN8K9583A35I
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Adapter Type: Apple Mini DisplayPort To VGA Adapter
Automatically Adjust Brightness: No
Adapter Firmware Version: 1.03
DELL 2009W:
Resolution: 1680 x 1050 (Widescreen Super eXtended Graphics Array Plus)
UI Looks like: 1680 x 1050 @ 60 Hz
Framebuffer Depth: 24-Bit Color (ARGB8888)
Display Serial Number: G433H97GANKL
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: No
2021-10-20 11:58:44.069 system_profiler[2534:38709] SPUSBDevice: IOCreatePlugInInterfaceForService failed 0xe00002be
2021-10-20 11:58:44.070 system_profiler[2534:38709] SPUSBDevice: IOCreatePlugInInterfaceForService failed 0xe00002be
USB:
USB 3.0 Bus:
Host Controller Driver: AppleUSBXHCIPPT
PCI Device ID: 0x1e31
PCI Revision ID: 0x0004
PCI Vendor ID: 0x8086
USB Optical Mouse:
Product ID: 0x4d81
Vendor ID: 0x0461 (Primax Electronics)
Version: 2.00
Speed: Up to 1.5 Mb/s
Location ID: 0x14300000 / 2
Current Available (mA): 500
Current Required (mA): 98
Extra Operating Current (mA): 0
Dell USB Keyboard:
Product ID: 0x2105
Vendor ID: 0x413c (Dell Inc.)
Version: 3.52
Speed: Up to 1.5 Mb/s
Manufacturer: Dell
Location ID: 0x14200000 / 3
Current Available (mA): 500
Current Required (mA): 70
Extra Operating Current (mA): 0
LabJack U6:
Product ID: 0x0006
Vendor ID: 0x0cd5
Version: 0.00
Speed: Up to 12 Mb/s
Manufacturer: LabJack
Location ID: 0x14100000 / 4
Current Available (mA): 500
Current Required (mA): 0
Extra Operating Current (mA): 0
USB 2.0 Bus:
Host Controller Driver: AppleUSBEHCIPCI
PCI Device ID: 0x1e2d
PCI Revision ID: 0x0004
PCI Vendor ID: 0x8086
Hub:
Product ID: 0x0024
Vendor ID: 0x8087 (Intel Corporation)
Version: 0.00
Speed: Up to 480 Mb/s
Location ID: 0x1a100000 / 1
Current Available (mA): 500
Current Required (mA): 0
Extra Operating Current (mA): 0
Built-In: Yes
USB 2.0 Bus:
Host Controller Driver: AppleUSBEHCIPCI
PCI Device ID: 0x1e26
PCI Revision ID: 0x0004
PCI Vendor ID: 0x8086
Hub:
Product ID: 0x0024
Vendor ID: 0x8087 (Intel Corporation)
Version: 0.00
Speed: Up to 480 Mb/s
Location ID: 0x1d100000 / 1
Current Available (mA): 500
Current Required (mA): 0
Extra Operating Current (mA): 0
Built-In: Yes
Hub:
Product ID: 0x2512
Vendor ID: 0x0424 (SMSC)
Version: b.b3
Speed: Up to 480 Mb/s
Location ID: 0x1d180000 / 2
Current Available (mA): 500
Current Required (mA): 2
Extra Operating Current (mA): 0
Built-In: Yes
IR Receiver:
Product ID: 0x8242
Vendor ID: 0x05ac (Apple Inc.)
Version: 1.00
Speed: Up to 1.5 Mb/s
Manufacturer: Apple, Inc.
Location ID: 0x1d182000 / 4
Current Available (mA): 500
Current Required (mA): 100
Extra Operating Current (mA): 0
Built-In: Yes
BRCM20702 Hub:
Product ID: 0x4500
Vendor ID: 0x0a5c (Broadcom Corp.)
Version: 1.00
Manufacturer: Apple Inc.
Location ID: 0x1d181000
Bluetooth USB Host Controller:
Product ID: 0x828a
Vendor ID: 0x05ac (Apple Inc.)
Version: 1.50
Manufacturer: Apple Inc.
Location ID: 0x1d181300
Also- yes- this is a mac mini (late 2012) running 10.15.7.
There is no external GPU.
Lindsey.
Hi Lindsey,
Now I’m wondering if all this weirdness is due to a mismatch between the version of MWorks I built your plugin against and the version you’re running. It’s really never safe to use a compiled MWorks plugin with any version of MWorks other than the one you compiled it against, but usually the failure modes are obvious (e.g. MWServer crashes), so I hadn’t been thinking about it.
To test this theory, can you try installing the latest MWorks nightly build on this machine? Please do not install any version of your U6 plugin (or any other non-standard plugins). Then, try loading and running the RSVP demo experiment, which is located at
/Library/Application Support/MWorks/Examples/RSVPDemo/RSVPDemo.mwel
If stimuli are still displayed on the main display, regardless of which display you select in MWServer’s preferences, then we can rule out this theory at least.
Thanks,
Chris
Hi Chris,
I installed the nightly and ran RSVPDemo, but the display is still on Display 1.
But this wasn’t surprising since the display is fine on a bunch of other computers with the “unmatched” version of MWorks.
Lindsey.
OK, thanks for checking. I’ll try to think of some other test to run next.
Chris