Help! SD Card Reader Not Working

General
1

I recently updated from macOS Monterey 12.6.1 to 12.6.2, and since the update, the built-in SD card reader has stopped working. It was functioning perfectly on 12.6.1. I’ve tested multiple SD cards, but none are recognized. However, when I use an external SD card reader via USB 2.0, all the same cards mount and work without any issues.

2

Have you tried restarting your Mac? Restarting can help reload system drivers and fix certain issues. If the problem persists after restarting, try booting into Safe Mode by holding down the Shift key during startup. Once you’ve logged in, restart your Mac normally. This process can clear caches and rebuild the system’s driver database.

3

Here are three common solutions you can try:

  1. Reset the SMC (System Management Controller)
  2. Reset the NVRAM / PRAM
  3. Open Terminal and enter the following command to restart the USB card reader service. Then insert your SD card to see if it’s recognized:
sudo killall -STOP -c AppleUSBCardReader

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