/etc/logcheck/ignore.d.server/cpufreqd is in logcheck-database 1.3.16.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cpufreqd: pmu_init[[:space:]]+: /proc/pmu/info: No such file or directory$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cpufreqd: apm_init[[:space:]]+: /proc/apm: No such file or directory$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cpufreqd: sensors_post_conf[[:space:]]+: no sensors\.conf found, sensors disabled!$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cpufreqd: plugins_post_conf[[:space:]]+: Unable to configure plugin [-_.[:alnum:]]+, removing$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cpufreqd: nforce2_post_conf[[:space:]]+: Unconfigured, exiting\.$
|