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[GH-ISSUE #1102] F1/F2 not working with Fn key #653

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opened 2026-05-05 06:26:55 -06:00 by gitea-mirror · 5 comments

gitea-mirror commented

2026-05-05 06:26:55 -06:00

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Originally created by @Simboiss on GitHub (Jul 6, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1102

Before opening the issue, have you...?

Searched for existing issues
Looked through the wiki
Updated MonitorControl to the latest version (if applicable)

Describe the bug

When holding the Fn key while presing the F1/F2 keys, nothing happens.

Steps to reproduce

Hold Fn key, press F1 or F2.

Expected behavior

Expected behavior is to have the regular F1/F2 key presses change the rightness of the monitor.
Holding the Fn key while pressing F1/F2 should produce the normal effect in the frontmost application.

Anything else?

Keyboard is Apple A1243 extended French Canadian CSA, wired.
The Fn key is under the F13 key.

Other F keys do work as expected when holding the Fn key.

Environment Information (please complete the following information)

- macOS version: 12.4 Monterey
- Mac model: Mac Studio (2022)
- MonitorControl version: 4.1.0 build 7034
- Monitor(s): LG 27UP650
- Apple Silicon/M1 (yes or no): yes, M1 Max

Originally created by @Simboiss on GitHub (Jul 6, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1102 ### Before opening the issue, have you...? - [X] Searched for existing issues - [X] Looked through [the wiki](https://github.com/MonitorControl/MonitorControl/wiki) - [X] Updated MonitorControl to the latest version (if applicable) ### Describe the bug When holding the Fn key while presing the F1/F2 keys, nothing happens. ### Steps to reproduce Hold Fn key, press F1 or F2. ### Expected behavior Expected behavior is to have the regular F1/F2 key presses change the rightness of the monitor. Holding the Fn key while pressing F1/F2 should produce the normal effect in the frontmost application. ### Anything else? Keyboard is Apple A1243 extended French Canadian CSA, wired. The Fn key is under the F13 key. Other F keys do work as expected when holding the Fn key. ### Environment Information (please complete the following information) ```markdown - macOS version: 12.4 Monterey - Mac model: Mac Studio (2022) - MonitorControl version: 4.1.0 build 7034 - Monitor(s): LG 27UP650 - Apple Silicon/M1 (yes or no): yes, M1 Max ```

gitea-mirror

2026-05-05 06:26:55 -06:00

closed this issue
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Status: Abandoned
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gitea-mirror commented

2026-05-05 06:27:00 -06:00

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@waydabber commented on GitHub (Jul 8, 2022):

F1/F2 and Brightness Up/Down generate two separate events and handled differently. If somehow one affects the other, something specific is not right. Do you maybe use any other app like Karabiner, Hammerspoon etc. that taps into the keyboard?

@waydabber commented on GitHub (Jul 8, 2022): F1/F2 and Brightness Up/Down generate two separate events and handled differently. If somehow one affects the other, something specific is not right. Do you maybe use any other app like Karabiner, Hammerspoon etc. that taps into the keyboard?

gitea-mirror commented

2026-05-05 06:27:02 -06:00

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@Simboiss commented on GitHub (Jul 13, 2022):

I am not using any other app that could interfere with normal keyboard operation.

The problem happens in Minecraft. Maybe some sort of event obstruction from the JRE?

In Safari, holding Fn and pressing F keys does nothing. Normal F key presses yield expected results.
In TextEdit, holding Fn and pressing F1/F2 keys produce nothing. Other Fn-F combinations produce a beep, and nothing else, which is expected.

@Simboiss commented on GitHub (Jul 13, 2022): I am not using any other app that could interfere with normal keyboard operation. The problem happens in Minecraft. Maybe some sort of event obstruction from the JRE? In Safari, holding Fn and pressing F keys does nothing. Normal F key presses yield expected results. In TextEdit, holding Fn and pressing F1/F2 keys produce nothing. Other Fn-F combinations produce a beep, and nothing else, which is expected.

gitea-mirror commented

2026-05-05 06:27:04 -06:00

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@estebanavv commented on GitHub (Jul 22, 2022):

I've been a long time MonitorControl user and this issue is happening since I upgraded to v4.10, using standard Keyboard the brightness doesn't work but for audio works as it used to. UI works.

ProductName:	macOS
ProductVersion:	12.4
BuildVersion:	21F79

MonitorControl:
      Version: 4.1.0
      Obtained from: Identified Developer
      Last Modified: 6/18/22, 10:00 AM
      Kind: Universal
      Signed by: Developer ID Application: Joni Van Roost (CYC8C8R4K9), Developer ID Certification Authority, Apple Root CA

~ system_profiler SPHardwareDataType
Hardware:
Model Name: iMac Pro
      Model Identifier: iMacPro1,1
      Processor Name: Quad-Core Intel Core i7
      Processor Speed: 4 GHz
      Number of Processors: 1
      Total Number of Cores: 4
      L2 Cache (per Core): 256 KB
      L3 Cache: 8 MB
      Hyper-Threading Technology: Enabled
      Memory: 32 GB
      System Firmware Version: 1731.100.130.0.0
      OS Loader Version: 540.120.3~6

~ system_profiler SPDisplaysDataType
Graphics/Displays:

    AMD Radeon RX 580:

      Chipset Model: AMD Radeon RX 580
      Type: GPU
      Bus: PCIe
      PCIe Lane Width: x16
      VRAM (Total): 8 GB
      Vendor: AMD (0x1002)
      Device ID: 0x67df
      Revision ID: 0x00e7
      Metal Family: Supported, Metal GPUFamily macOS 2
      Displays:
        DELL P2319H:
          Resolution: 1080 x 1920
          UI Looks like: 1080 x 1920 @ 60.00Hz
          Framebuffer Depth: 30-Bit Color (ARGB2101010)
          Display Serial Number: 56N5LK3     
          Mirror: Off
          Online: Yes
          Rotation: 90
          Connection Type: Thunderbolt/DisplayPort
        DELL U3818DW:
          Resolution: 3840 x 1600 (Ultra-wide 4K)
          UI Looks like: 3840 x 1600 @ 60.00Hz
          Framebuffer Depth: 30-Bit Color (ARGB2101010)
          Display Serial Number: 97F8P76804RL
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Rotation: Supported
          Television: Yes

@estebanavv commented on GitHub (Jul 22, 2022): I've been a long time MonitorControl user and this issue is happening since I upgraded to v4.10, using standard Keyboard the brightness doesn't work but for audio works as it used to. UI works. ```~ sw_vers ProductName: macOS ProductVersion: 12.4 BuildVersion: 21F79 MonitorControl: Version: 4.1.0 Obtained from: Identified Developer Last Modified: 6/18/22, 10:00 AM Kind: Universal Signed by: Developer ID Application: Joni Van Roost (CYC8C8R4K9), Developer ID Certification Authority, Apple Root CA ~ system_profiler SPHardwareDataType Hardware: Model Name: iMac Pro Model Identifier: iMacPro1,1 Processor Name: Quad-Core Intel Core i7 Processor Speed: 4 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per Core): 256 KB L3 Cache: 8 MB Hyper-Threading Technology: Enabled Memory: 32 GB System Firmware Version: 1731.100.130.0.0 OS Loader Version: 540.120.3~6 ~ system_profiler SPDisplaysDataType Graphics/Displays: AMD Radeon RX 580: Chipset Model: AMD Radeon RX 580 Type: GPU Bus: PCIe PCIe Lane Width: x16 VRAM (Total): 8 GB Vendor: AMD (0x1002) Device ID: 0x67df Revision ID: 0x00e7 Metal Family: Supported, Metal GPUFamily macOS 2 Displays: DELL P2319H: Resolution: 1080 x 1920 UI Looks like: 1080 x 1920 @ 60.00Hz Framebuffer Depth: 30-Bit Color (ARGB2101010) Display Serial Number: 56N5LK3 Mirror: Off Online: Yes Rotation: 90 Connection Type: Thunderbolt/DisplayPort DELL U3818DW: Resolution: 3840 x 1600 (Ultra-wide 4K) UI Looks like: 3840 x 1600 @ 60.00Hz Framebuffer Depth: 30-Bit Color (ARGB2101010) Display Serial Number: 97F8P76804RL Main Display: Yes Mirror: Off Online: Yes Rotation: Supported Television: Yes

gitea-mirror commented

2026-05-05 06:27:06 -06:00

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@skoushan commented on GitHub (Sep 2, 2023):

I have the same issue. When MonitorControl is running (even if keyboard shortcuts are disabled), Fn + F1 and Fn + F2 do nothing OS-wide.

@skoushan commented on GitHub (Sep 2, 2023): I have the same issue. When MonitorControl is running (even if keyboard shortcuts are disabled), Fn + F1 and Fn + F2 do nothing OS-wide.

gitea-mirror commented

2026-05-05 06:27:08 -06:00

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@stale[bot] commented on GitHub (Sep 4, 2024):

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require attention? This issue may be closed if no further activity occurs. Thank you for your contributions.

@stale[bot] commented on GitHub (Sep 4, 2024): Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require attention? This issue may be closed if no further activity occurs. Thank you for your contributions.

gitea-mirror referenced this issue

2026-05-05 07:06:11 -06:00

[PR #653] [MERGED] Fix layout issue #1152