at Mario:
sorry, I don't understand question. How do I change power adapter state over 
the suspend sequence?

at AceLan:

$     grep "" /sys/devices/system/cpu/cpufreq/policy*/cpuinfo_max_freq
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq:5293000
/sys/devices/system/cpu/cpufreq/policy10/cpuinfo_max_freq:6080000
/sys/devices/system/cpu/cpufreq/policy11/cpuinfo_max_freq:6080000
/sys/devices/system/cpu/cpufreq/policy12/cpuinfo_max_freq:5764000
/sys/devices/system/cpu/cpufreq/policy13/cpuinfo_max_freq:5764000
/sys/devices/system/cpu/cpufreq/policy14/cpuinfo_max_freq:5449000
/sys/devices/system/cpu/cpufreq/policy15/cpuinfo_max_freq:5449000
/sys/devices/system/cpu/cpufreq/policy1/cpuinfo_max_freq:5293000
/sys/devices/system/cpu/cpufreq/policy2/cpuinfo_max_freq:5137000
/sys/devices/system/cpu/cpufreq/policy3/cpuinfo_max_freq:5137000
/sys/devices/system/cpu/cpufreq/policy4/cpuinfo_max_freq:5608000
/sys/devices/system/cpu/cpufreq/policy5/cpuinfo_max_freq:5608000
/sys/devices/system/cpu/cpufreq/policy6/cpuinfo_max_freq:6080000
/sys/devices/system/cpu/cpufreq/policy7/cpuinfo_max_freq:6080000
/sys/devices/system/cpu/cpufreq/policy8/cpuinfo_max_freq:5924000
/sys/devices/system/cpu/cpufreq/policy9/cpuinfo_max_freq:5924000

> Only reboot can recover the issue

Issue disappears when I plug power cable out of the laptop. CPU turn off
does not have effect:

$     sudo chcpu -d 1-15 && sudo chcpu -e 1-15
CPU 1 disabled
CPU 2 disabled
CPU 3 disabled
CPU 4 disabled
CPU 5 disabled
CPU 6 disabled
CPU 7 disabled
CPU 8 disabled
CPU 9 disabled
CPU 10 disabled
CPU 11 disabled
CPU 12 disabled
CPU 13 disabled
CPU 14 disabled
CPU 15 disabled
CPU 1 enabled
CPU 2 enabled
CPU 3 enabled
CPU 4 enabled
CPU 5 enabled
CPU 6 enabled
CPU 7 enabled
CPU 8 enabled
CPU 9 enabled
CPU 10 enabled
CPU 11 enabled
CPU 12 enabled
CPU 13 enabled
CPU 14 enabled
CPU 15 enabled

and processor frequency monitoring shows (comparing to description):

CPU      MHZ
  0 543.9320
  1 544.2400
  2 544.2120
  3 544.4260
  4 543.9670
  5 544.3680
  6 544.2330
  7 544.3450
  8 544.4040
  9 400.0000
 10 544.4570
 11 544.4160
 12 400.0000
 13 543.9950
 14 544.0650
 15 400.0000

when I plug out power cable, frequency immediately jumps up.

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https://bugs.launchpad.net/bugs/2088733

Title:
  low CPU frequency after wake up AMD Ryzen

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