Description of problem: Starting with kernel 4.13 my Fedora Workstation with Gnome DE is stuck at one frequency (2.69Ghz), scaling does not happen Version-Release number of selected component (if applicable): kernel-core-4.13.5-100.fc25.x86_64 kernel-core-4.13.6-100.fc25.x86_64 kernel-core-4.13.8-100.fc25.x86_64 How reproducible: 100% Steps to Reproduce: 1.Start machine with one of the affected kernels 2.monitor CPU frequency 3. Actual results: Freq. remains constant, independent of demand Expected results: CPU scaling Additional info: better report it to upstream?
Maybe good to know what CPU this happens on: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 2 Core(s) per socket: 2 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 69 Model name: Intel(R) Core(TM) i7-4600U CPU @ 2.10GHz Stepping: 1 CPU MHz: 1061.938 CPU max MHz: 3300.0000 CPU min MHz: 800.0000 BogoMIPS: 5387.54 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 4096K NUMA node0 CPU(s): 0-3 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm cpuid_fault epb tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt dtherm ida arat pln pts
sorry, for the mess. The CPU is actually scaling - I just didn't realize the that it is only the CPU Power Manager extension that is acting up. Sorry for the confusion once again!