Hi, I have the same (probably) problem on freshly installed Debian 8 - in syslog, cpufreq writes:
cpufreqd: get_class_device_attribute: couldn't open /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/energy_full (No such file or directory) cpufreqd: get_class_device_attribute: couldn't open /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/energy_now (No such file or directory) cpufreqd: get_class_device_attribute: couldn't open /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/power_now (No such file or directory) and there are no "energy-*" files, only "charge-*": $ ls -1 /sys/devices/LNXSYSTM\:00/LNXSYBUS\:00/PNP0C0A\:00/power_supply/BAT0/charge* /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/charge_full /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/charge_full_design /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/charge_now $ ls -1 /sys/devices/LNXSYSTM\:00/LNXSYBUS\:00/PNP0C0A\:00/power_supply/BAT0/energy* ls: cannot access /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/energy*: No such file or directory No matter what I set with cpufreq-set, the frequency is allways below 1.5GHz (allowed range is 800MHz - 3.5GHz according to cpufreq-info) on every core and I effectively have a crappy old laptop. I have: Debian 8.2 cpufreq version 2.4.2-2 Linux 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u5 (2015-10-09) x86_64 GNU/Linux Dell Latitude E5420 laptop. Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz Is there any way to workaround this bug? --
