This is precisely my problem, too (Ubuntu 9.10 Intel Duo 2 T2500 kernel 2.9.31-17-generic.
dmsg says: [ 0.000000] Detected 1997.533 MHz processor. but /proc/cpuinfo assigns 1.0GHz to both cores, and as a result scaling_max_freq is limited to 1.0GHz, and cannot be manually reset. At boot, cpufreq-info shows that all is well: governor=ondemand, maximum=2GHz minimum=1GHz. Within a few minutes, however, some process (which!?) changes those values. Now my min=my max: "between 1GHz and 1GHz." Sorry, a bit sloppy, this report. Majored in poetry. cpuinfo after the governor and freq settings are changed : processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU T2500 @ 2.00GHz stepping : 8 cpu MHz : 1000.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc arch_perfmon bts pni monitor vmx est tm2 xtpr pdcm bogomips : 3995.06 clflush size : 64 power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU T2500 @ 2.00GHz stepping : 8 cpu MHz : 1000.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc arch_perfmon bts pni monitor vmx est tm2 xtpr pdcm bogomips : 3994.66 clflush size : 64 power management: -- Wrong CPU frequencies reported, cannot run max freq https://bugs.launchpad.net/bugs/469636 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
