Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 45

Kernel Panic/System Crashes

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Kernel Panic/System Crashes Unlikely cause: Battery, Power Adapter Quick Check Symptom Memory Issues/Kernel panic and freezes • Display notice of system kernel panic during start up and desktop use. • System freeze during use. • System freeze upon wake from sleep. Quick Check 1. Reset SMC and clear PRAM 2. Remove suspect external devices. 3. Verify user memory is Apple-approved memory, and memory configuration matches memory installed. 4. Start up with shift key down for safe mode. 5. Startup from known-good bootable device 6. Check panic.log info for crash cause 7. Run AHT for sensors test Deep Dive Check 1. Isolate Peripherals as cause. Disconnect all peripherals, external devices, and display adapters if present 2. Reset SMC and clear PRAM then verify that unit starts without panic issues. Result Yes No Yes No Action Suspect peripherals as cause. Reconnect one at a time, verifying unit operation at each stage Go to Step 2 Issue resolved with default startup settings. Go to step 3 Code 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Startup and Power Issues 45

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MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues
45
2010-06-15
Kernel Panic/System Crashes
Unlikely cause:
Battery, Power Adapter
Quick Check
Symptom
Quick Check
Memory Issues/Kernel panic and
freezes
•
Display notice of system kernel
panic during start up and
desktop use.
•
System freeze during use.
•
System freeze upon wake from
sleep.
1.
Reset SMC and clear PRAM
2.
Remove suspect external devices.
3.
Verify user memory is Apple-approved memory,
and memory configuration matches memory
installed.
4.
Start up with shift key down for safe mode.
5.
Startup from known-good bootable device
6.
Check panic.log info for crash cause
7.
Run AHT for sensors test
Deep Dive
Check
Result
Action
Code
1.
Isolate Peripherals as cause.
Disconnect all peripherals,
external devices, and display
adapters if present
Yes
Suspect peripherals as cause.
Reconnect one at a time,
verifying unit operation at
each stage
No
Go to Step 2
2.
Reset SMC and clear PRAM
then verify that unit starts
without panic issues.
Yes
Issue resolved with default
startup settings.
No
Go to step 3