MacBook Pro won't sleep and internal display is blurry

Hi,

These issues are usually tied to software glitches or misconfigured power/display settings, though they can occasionally indicate a hardware fault with the display ribbon cable. You can typically resolve both problems by adjusting your macOS settings and performing system resets.

Fixing the Blurry Internal Display

• Check Display Scaling: Sometimes the resolution drops or changes misaligns the sub-pixel rendering. Go to Apple Menu > System Settings > Displays. Select Default for display (or the highest More Space option) rather than a scaled or custom preset.
• Perform a Quick Sleep/Wake Cycle: Closing the lid for 30 seconds can sometimes reset the display pipeline and fix blurry graphics upon wake.
• Test Hardware with an External Monitor: Connect your MacBook Pro to an external monitor. If the external screen looks sharp but the internal one remains blurry, your internal display or its flex cable may have a hardware defect.

Fixing the MacBook Pro Won't Sleep Issue

• Disconnect Accessories: Unplug all external USB or Thunderbolt drives, hubs, and docks. Faulty devices or connected storage can continuously wake a sleeping Mac.
• Change Battery Settings: Go to Apple Menu > System Settings > Battery > Options. Ensure Wake for network access is turned to Never (or off) so your Mac isn't kept awake by background network traffic.
• Check for Background Processes: Open Finder > Applications > Utilities > Activity Monitor, click the CPUtab, and see if an app or background process (like Spotlight indexing) is stuck running or using an unusually high percentage of the CPU.

Perform System Resets

If settings adjustments don't solve the issue, resetting the core management systems can force your Mac to re-evaluate hardware states:

• NVRAM Reset: Shut down completely. Turn the Mac on and immediately press and hold Option + Command + P + R for about 20 seconds. This resets display memory and sleep settings.
• SMC Reset (Intel Macs): Shut down completely. Hold down the left Control + Option (Alt) + right Shift keys for 7 seconds, then additionally press and hold the Power button for another 7 seconds. Release everything, wait, and turn the Mac on.
• Restarting your Mac (Apple Silicon / M1 / M2 / M3): A simple clean restart is often enough to clear stuck display and sleep states on newer machines

jmehling wrote:

My MacBook Pro does not sleep when I close the monitor AND the monitor is extremely blurry. It connects to an external monitor and looks fine.

Old issue, new issue, what changed you do not say...

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