Freeze and black screen

Question

Level 1

10 points

Freeze and black screen

In a couple hours I get multiple freeze and black screen with auto restart. Here is the error message. Can someone helps me, what start these problem please. Thank you.

panic(cpu 2 caller 0xffffff801362f89b): userspace watchdog timeout: no successful checkins from WindowServer (2 induced crashes) in 120 seconds

WindowServer has not exited since first loaded

service: logd, total successful checkins in 5914 seconds: 592, last successful checkin: 0 seconds ago

service: WindowServer (2 induced crashes), total successful checkins in 5880 seconds: 576, last successful checkin: 120 seconds ago

service: remoted, total successful checkins in 5914 seconds: 590, last successful checkin: 0 seconds ago

service: opendirectoryd, total successful checkins in 5914 seconds: 592, last successful checkin: 0 seconds ago

service: configd, total successful checkins in 5914 seconds: 592, last successful checkin: 0 seconds ago

Panicked task 0xffffff9047e1df38: 3 threads: pid 110: watchdogd

Backtrace (CPU 2), panicked thread: 0xffffff99df5200e0, Frame : Return Address

0xffffffec123c7500 : 0xffffff80107ebc91

0xffffffec123c7550 : 0xffffff8010958a0c

0xffffffec123c7590 : 0xffffff80109482b3

0xffffffec123c7660 : 0xffffff8010781971

0xffffffec123c7680 : 0xffffff80107ebf87

0xffffffec123c7780 : 0xffffff80107eb622

0xffffffec123c77f0 : 0xffffff8010fd41de

0xffffffec123c78e0 : 0xffffff801362f89b

0xffffffec123c78f0 : 0xffffff801362f356

0xffffffec123c7910 : 0xffffff801362e421

0xffffffec123c7a40 : 0xffffff8010f39fb6

0xffffffec123c7a70 : 0xffffff8010f3a32d

0xffffffec123c7be0 : 0xffffff80108ff8df

0xffffffec123c7d00 : 0xffffff80107c8eb0

0xffffffec123c7da0 : 0xffffff80107dc385

0xffffffec123c7df0 : 0xffffff80107dca74

0xffffffec123c7ee0 : 0xffffff801092cb7a

0xffffffec123c7fa0 : 0xffffff8010781dd6

Kernel Extensions in backtrace:

com.apple.driver.watchdog(1.0)[E2B50980-FE99-33C7-8EBF-4D0F2C67FBF7]@0xffffff801362d000->0xffffff801362ffff

Process name corresponding to current thread (0xffffff99df5200e0): watchdogd

Mac OS version:

24B91

Here I post complete error log:

Error log

iMac 27″

Posted on Nov 23, 2024 5:13 AM

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Answer 1

rkaufmann87

Level 10

144,372 points

Nov 30, 2024 12:24 PM in response to antonek-cz

den.thed is correct, Kernel Panics can be caused by either hardware or software so troubleshooting what the exact source is can be time consuming and difficult. Common sources of KPs are:

Out of date third party apps, simply keep these up-to-date.
IF your system has a traditional HD attached to it, a failing HD can cause KPs. You have a 2020 iMac which only used SSDs for internal storage however if you have any external HD's attached detach them (eject in Finder) and then physically disconnect the EHDs and test for a few days. If the KPs disappear then it is simply a matter of trial and error to determine which External Hard Disk is the culprit.
Finally, RAM is a common hardware cause. This can be failed or failing RAM, incorrect RAM, unseated RAM. Your iMac has 32GB of RAM, if that was upgraded by you that could be the issue. iMacs are VERY sensitive to using high quality RAM. On these forums you will find experienced users will ONLY recommend OWC (www.macsales.com) or Crucial RAM. Anything else is highly suspect!

Personally I would start with #1 and #3 and go from there until you locate the source.

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