Frequently Asked Questions
Here's a list of common asked questions. Check regularly for the latest updates. Thanks :-)
- Custom resolutions
- I can't get my wide screen monitor to show its native resolution on my Mac
- How can I get my 5120x1440 monitor working ?
- Can I define custom resolutions bigger than 4096 pixels wide ?
- I want to use a HiDPI resolution that is half the native size of the monitor, but this doesn't work
- How can I define a new HiDPI resolution of ... ?
- Why isn't my new custom resolution available after restart ?
- How can I configure a headless MacMini controlled via Remote Desktop to match the remote resolution ?
- I am trying to modify a built-in resolution, but macOS doesn't accept it
- SwitchResX always says a "Reboot is needed"
- Where can I find the timing parameters for a specific resolution ?
- What is the "Use Keychain" button for ?
- Why does SwitchResX force me to use 1368 as the horizontal value when I enter 1366 ?
- I can't define a setting for VGA when using a Mini-DP to VGA Adapter
- Startup problems
- I've defined a new resolution and rebooted, and the system boots with a black screen.
- I've selected a predefined resolution and the screen went black.
- I've selected a specific orientation setting and the screen went black.
- My ColorSync profile shows the name "SwitchResX" after uninstallation.
- Other issues
- SwitchResX doesn't save my settings
- I keep getting the popup saying I'm not registered, even though I did register
- SwitchResX keeps prompting to update when I already have the latest version installed
- The tool doesn't solve my specific issue - can I get a refund ?
- Compatibility
- Is SwitchResX compatible with Apple Silicon (M1) Macs ?
- Is SwitchResX compatible with macOS BigSur ?
- Is SwitchResX compatible with macOS Catalina ?
- Is SwitchResX compatible with macOS Mojave ?
- Is SwitchResX compatible with macOS High Sierra ?
- Is SwitchResX compatible with macOS Sierra ?
- Is SwitchResX compatible with El Capitan ?
- Is SwitchResX compatible with Yosemite ?
- Is SwitchResX compatible with Mavericks ?
- Is SwitchResX compatible with Mountain Lion ?
- Is SwitchResX compatible with Lion ?
- Is SwitchResX compatible with Snow Leopard ?
- Which version do I need to use with older MacOS X versions ?
- Uninstallation
- How do I uninstall SwitchResX ?
- After uninstalling, I still get the popup message stating that I need to register
- Disabling a display
- Can SwitchResX disable a display ?
- I use Mavericks (or later versions of MacOS X) and my display doesn't disable completely
- Why is the backlight still lit when the display is disabled ?
- I disabled the internal screen, then I unplugged the external display…
- I've enabled back a display that I previously disabled, and the wallpaper is now grey