I have had this problem in both 2.6.31-17 and 2.6.32-9 (both generic and using the compiled-in acpi-cpufreq)
cat /proc/cpuinfo yields 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 aperfmperf pni monitor vmx est tm2 xtpr pdcm bogomips : 3994.65 clflush size : 64 cache_alignment : 64 address sizes : 32 bits physical, 32 bits virtual The CPU is a Duo 2 T2500 @2GHz, as shown, but the GHz is shown as 1GHz. This throttles down my CPU to a maximum of 1GHz, making frequency scaling impossible. I have tried disabling scaling in BIOS (Dell Latitude D620, v.A10) to at least get the cpu to run at a constant 2GHz so I can work while waiting for a fix. No joy so far. Have even thought of compiling the old speedstep-centrino driver as a module, but not done with that time-intensive experiment yet. clscpu yields: c cbray...@macunaimachine:~/Desktop/Leituras$ lscpu Architecture: i686 CPU(s): 2 Thread(s) per core: 1 Core(s) per socket: 2 CPU socket(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 14 Stepping: 8 CPU MHz: 1000.000 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 2048K c -- CPU not detected on a Compaq Proliant 3000 dual P II 400 Mhz https://bugs.launchpad.net/bugs/64133 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