Involuntary reboot log 9.3 and 9.4
Two hard resets due to macOS High Sierra and Active Directory not agreeing with one another: black screen, fans on, no prompt for password to decrypt volume. Even booted into recovery mode, APFS volume no longer accepts passphrase, requiring machine to be re-imaged (to Sierra, where it will stay, funnily enough).
This is still a great machine as far as hardware is concerned; chalking this one entirely up to the OS. This puts a dint in the great uptime numbers (was 217.5 days between failures, now 113.25 days) but they’re still the best I’ve ever enjoyed on a Mac.
Statistics so far
- Failure type: hard reset
- OS version: 10.13
- Uptime at moment of failure: post-boot
- Kernel panics: 0
- Hard resets: 4
- Total failures: 4
- Start of recording keeping: 16 July 2016
- Total days to date: 453
- Average time between failures: 113.25 days
Historical data
For comparison, previous generations of machines (from most oldest to most recent) that I’ve used have had averages of:
- ~13.83 days (over ~540 days): PowerMac G5.
- 22.73 days (over 1,364 days): iMac (17", Early 2006).
- 20.06 days (over 321 days): iMac (27", Late 2009).
- 19.11 days (over 707 days): MacBook Air (13", Late 2010).
- 41.86 days (over 293 days): MacBook Air (13", Mid-2012).
- 2.0 days (over 2 days): loaner laptop (MacBook, unsure of model).
- 27.176 days (over 462 days): MacBook Air (13", Mid-2013).
- 35.0 days (over 140 days): as above, but with a replacement shell.
- 40.8 days (over 245 days): MacBook Pro (Retina, 15-inch, Mid 2015).
- Current machine: MacBook Pro (Haswell, Mid-2015, dual graphics).