Three methods have been recorded before tossing 2K screens to enable HiDPI:
March 2020: Solution for SwitchResX showing Not installed when HiDPI is turned on
November 2020: Solution for HIDPI failure after upgrading macOS Big Sur
December 2021: Apple M1 A new way to turn on HiDPI without turning off SIP or SwitchResX
Almost every year, the 2K screen needs to be changed again, and this year is still no exception.
The last time I was tossing around, I discovered the good thing BetterDummy . After using it for a year, we found that there are still many side effects.
old version problem
1. Delay in input method
After using a software for a long time, there will be obvious delay when inputting Chinese, and sometimes the delay can even reach 1 second, which is unbearable for obsessive-compulsive disorder. This is true regardless of the third-party input method (Sogou) or the native input method. Searched for many solutions, but could not completely solve this problem. The later solution was to restart the software when I felt that there was a delay in typing in that software. Although it cannot fundamentally solve the problem, it can also be used in an emergency. By chance, I saw someone saying that this is actually caused by BetterDummy.
2. The external screen flickers
Every time an external monitor is plugged in, there is a certain chance that the external screen will flicker. As long as the mouse is moved, the screen will flicker. The solution is to unplug the external screen and plug it in again.
3. The content of the window returns to the original screen.
After sleeping or opening the lid of the notebook, all the windows on the external screen will return to the screen of the notebook, and you have to drag it back to the external screen every time. The solution is to set the external screen as the main display.
4. Cursor disappears
Sometimes the cursor cannot be found suddenly, and it will appear only after sliding the touchpad or shaking the mouse continuously and quickly.
BetterDisplay
After suffering for a year, I finally found a new method today - BetterDisplay . download link
Surprisingly, BetterDisplay is actually an upgraded version of BetterDummy, and it is even better.
The biggest advantage is that it can turn on HiDPI without creating a virtual screen , and can adjust the screen scaling in a native way, just like adjusting the screen that comes with Mbp.
step
- Download BetterDisplay
download address - Once installed, click the Settings button at the bottom of the panel.
- In the settings panel, switch to Display and check "Edit the system configuration of this display".
- At this point, in the expanded options, "Native panel pixel resolution (native panel pixel resolution)" will show the resolution size of your current screen. The 2K screen will display 2560×1440, if it is wrong, you can check it and modify it.
- Modify the next "Default resolution (default resolution)", this is the resolution you want the screen to display, I set it to 1920×1080, 60Hz.
- Then, save, and restart your computer.
- After restarting, open the computer's settings>>display>>display settings, switch to the external monitor, and find that it can be freely scaled like the default monitor.
