文書番号: 000197189

Dell Monitor Screen Flickering When MacBook M1 Refresh Rate is Set as Variable (40-60 Hz)

概要: This article talks about the screen flickering issue on Dell monitors S2721Q, S2721QS, and S2722QC when connected to MacBook M1.

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文書の内容

現象

Monitor screen flickers

You may notice the screen flickering on the Dell monitor when the refresh rate on the MacBook M1 is set to Variable (40-60 Hz).

Affected products

S2721Q
S2721QS
S2722QC
S2721QSA

原因

This is a known compatibility issue and does not require replacing any hardware.

解決方法

Update macOS to version 13.0.1 or higher to avoid flickering related to Variable Refresh Rate (VRR).

Change the refresh rate from Variable to 60 Hz on the MacBook

NOTE: The refresh rate setting in the MacBook must be manually reset after every power ON. This is a MacBook operating system setting, and not related to the monitor setting.

Use the instructions below to change the refresh rate from Variable (40-60 Hz) to 60 Hz on the MacBook.

Choose Apple menu → System Preferences, then click Displays.

Figure 1: Apple Menu System Preferences
Click Displays Preferences.

Figure 2: Displays Preferences
Click Display Settings.

Figure 3: Display Settings
Select the affected Dell monitor (see Figure 4 for an example of Dell Monitor S2722QC).

Figure 4: Display settings are shown for the Dell Monitor S2722QC
Click Refresh Rate and select 60 Hertz.

Figure 5: Select 60 Hertz
Check if the Refresh Rate is set to 60 Hertz, then click Done to confirm the change.

Figure 6: Confirm the change