Many thanks, Kostis! At the end I left the SMP option enabled and I got back frequency scaling with the acpi_cpufreq driver. Still no way to have speedstep_centrino working. I also tried to load the module with debugging on, resulting in the following lines in the kernel's log:
Mar 20 22:22:13 R3d-574r kernel: [4294692.623000] CLASS: registering class device: ID = 'acpi' Mar 20 22:22:13 R3d-574r kernel: [4294692.623000] class_uevent - name = acpi Mar 20 22:22:13 R3d-574r kernel: [4294692.623000] class_device_create_uevent called for acpi Mar 20 22:22:13 R3d-574r kernel: [4294692.705000] bus type 'i2c' registered Mar 20 22:22:13 R3d-574r kernel: [4294692.705000] bus i2c: add driver i2c_adapter Mar 20 22:22:13 R3d-574r kernel: [4294692.705000] device class 'i2c-adapter': registering Mar 20 22:22:13 R3d-574r kernel: [4294692.774000] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) Mar 20 22:22:13 R3d-574r kernel: [4294692.973000] cpufreq-core: trying to register driver centrino Mar 20 22:22:13 R3d-574r kernel: [4294692.973000] cpufreq-core: adding CPU 0 Mar 20 22:22:13 R3d-574r kernel: [4294692.974000] speedstep-centrino: Invalid control/status registers (1 - 1) Mar 20 22:22:13 R3d-574r kernel: [4294692.974000] speedstep-centrino: <6>speedstep-centrino: invalid ACPI data Mar 20 22:22:13 R3d-574r kernel: [4294692.974000] speedstep-centrino: <6>speedstep-centrino: found unsupported CPU with Enhanced SpeedStep: send /proc/cpuinfo to Jeremy Fitzhardinge <[EMAIL PROTECTED]> Mar 20 22:22:13 R3d-574r kernel: [4294692.974000] cpufreq-core: initialization failed Mar 20 22:22:13 R3d-574r kernel: [4294692.974000] cpufreq-core: no CPU initialized for driver centrino Mar 20 22:22:13 R3d-574r kernel: [4294692.974000] cpufreq-core: unregistering CPU 0 Now I'm trying to contact the developer, as suggested... -- [regression-edgy] speedstep-centrino module fails to load https://launchpad.net/bugs/66812 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
