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I try to change clock frequency to lower frequency (android), but although I get no error, it keeps using the other frequency. < root@w812a_kk:/sys/devices/system/cpu/cpu0/cpufreq # ls affected_cpus cpuinfo_cur_freq cpuinfo_max_freq cpuinfo_min_freq cpuinfo_transition_latency related_cpus scaling_available_governors scaling_cur_freq scaling_driver scaling_governor scaling_max_freq scaling_min_freq scaling_setspeed stats

root@w812a_kk:/sys/devices/system/cpu/cpu0/cpufreq # cat cpuinfo_min_freq 
598000
root@w812a_kk:/sys/devices/system/cpu/cpu0/cpufreq # cat cpuinfo_max_freq
1001000
root@w812a_kk:/sys/devices/system/cpu/cpu0/cpufreq # echo "userspace" > scaling_governor
root@w812a_kk:/sys/devices/system/cpu/cpu0/cpufreq # echo 598000 > scaling_setspeed

root@w812a_kk:/sys/devices/system/cpu/cpu0/cpufreq # cat scaling_cur_freq
1001000

Any idea what's wrong?

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    I'm voting to close this question as off-topic because it's about Android, not about a Unix system. Android is a distinct operating system that uses the Linux kernel as a kernel, it is not a Linux system. You can ask Android questions on Android Enthusiasts. – Gilles 'SO- stop being evil' Jan 11 '17 at 23:06
  • What device and custom kernel? You typically can't change the clocking or scaling of a stock kernel. Have you tried using Kernel Aduitor? – acejavelin Jan 12 '17 at 1:43
  • It does work on other devices. – ransh Jan 12 '17 at 9:28
  • Kernel Aduitor only shows status, can't change frequency with it – ransh Jan 12 '17 at 9:29

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