Close

MacOS Catalina Kernel Panic on Power Wakeup

When waking up from sleep, my iMac on MacOS Catalina (*) crashed after 60 seconds with a kernel panic, as shown below. Searching around, I found that this is unfortunately quite common and reasons vary.

Finally, I figured out what caused *my* crashes: the USB devices attached to my Thunderbold 2 display, attached to the iMac’s Thunderbold 3 port using a converter. Re-attaching all devices to a classic USB hub solved the issue for me. Morality: the “old” Apple Retina Thunderbold 2 screen can be used on modern iMacs, but it’s not a good idea to use them as USB hub.

panic(cpu 0 caller 0xffffff80038288b7): "IOSCSIPeripheralDeviceType00::setPowerState(0xffffff810bc54140 : 0xffffff7f83af218a, 0 -> 4) timed out after 100823 ms"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.81.5/iokit/Kernel/IOServicePM.cpp:5302
 Backtrace (CPU 0), Frame : Return Address
 :
 BSD process name corresponding to current thread: kernel_task
 Mac OS version:  19D76
 Kernel version:  Darwin Kernel Version 19.3.0: Thu Jan  9 20:58:23 PST 2020; root:xnu-6153.81.5~1/RELEASE_X86_64
 Kernel UUID: A8DDE75C-CD97-3C37-B35D-1070CC50D2CE
 Kernel slide:     0x0000000002e00000
 Kernel text base: 0xffffff8003000000
 __HIB  text base: 0xffffff8002f00000
 System model name: iMac (Mac-XXX)
 System shutdown begun: NO
 Panic diags file available: YES (0x0)
 System uptime in nanoseconds: 951998177346
 last loaded kext at 851644864529: >usb.cdc    5.0.0 (addr 0xffffff7f89655000, size 28672)
 last unloaded kext at 557281301437: |SCSITaskUserClient    422.0.2 (addr 0xffffff7f85a76000, size 28672)
 loaded kexts:
  :

(* I know, I know, but I had no choice)

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

Close