MacDebug

Verified for macOS Tahoe 26.2

Fix Guide: Mac Sleep Issues (Wi-Fi Drops & Wake Failures)

Symptom: After your Mac wakes from sleep, the Wi-Fi connection is dropped and won't reconnect. Or, the Mac won't wake up unless you press the Return key multiple times or force-restart.

Why this happens

macOS Tahoe has introduced new "Power Nap" behaviors that can cause the network interface (`en0`) to stay in a "suspended" state after the system wakes. This is often caused by a conflict between the system's power management and the Wi-Fi hardware's firmware.

Fix 1: Reset the Wi-Fi Interface (Free)

A simple toggle in the menu bar isn't enough; you need to restart the network daemon.
**Open Terminal**
**Restart Network Services**
**Renew DHCP Lease**

Fix 2: Adjust Sleep Settings (Free)

If your Mac won't wake up properly, you may need to disable "Wake for Network Access."
**Open System Settings**
**Disable Network Wake**
**Battery Settings**

Fix 3: The Automated Reliability Path

When power management sensors are out of sync. Persistent wake/sleep issues are often a symptom of a deeper "System Management" error that native settings can't reach.

Recommended Tool: CleanMyMac X

- **Maintenance Scripts:** The "Flush DNS Cache" and "Run Maintenance Scripts" modules in CleanMyMac X reset the internal network configurations that get stuck during sleep transitions. - **Optimization:** Identifying background apps that are "Preventing Sleep" (like stuck backup agents) will stop your Mac from overheating while the lid is closed. [Link: Resolve Mac Sleep Issues with CleanMyMac X]

Alternative: iStat Menus

Use iStat Menus to see exactly which hardware component (Sensors, CPU, or Network) is failing to respond during the wake process. [Link: Monitor Sleep & Wake Health with iStat Menus]