Slow to wake: watchdog: BUG: soft lockup - CPU#3

[sash17 (Alex Alex)]

I have MBP 17" early 2011, and in my case that was CPU 5, 6, 7. Maybe it is better to switch on/off all of them(1-7) ?
See this post

Wake up from suspend takes 4 minutes

Ok, now the problem is solved for me, thank you. In my case the main issue was CPU 5, but i also noticed that CPU 6 and sometime 7 was slow waking up. I was looking in journalctl -b to see when MBP goes to sleep and wakes up. Then using dmesg -T was looking for a CPU that slows the waking up process. This was in my log [Fri May 26 22:30:13 2023] x86: Booting SMP configuration: [Fri May 26 22:30:13 2023] smpboot: Booting Node 0 Processor 1 APIC 0x2 [Fri May 26 22:30:15 2023] CPU1 is up [Fri May …