I have the same problem. After upgrading to Gutsy, speedstep doesn't work. Pentium M 725 is stuck at 1600MHz.
I tried this: # modprobe speedstep-centrino FATAL: Error inserting speedstep_centrino (/lib/modules/2.6.22-14-generic/kernel/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.ko): No such device # modprobe acpi-cpufreq FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.22-14-generic/kernel/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device This is with the standard Gutsy kernel, 2.6.22-14. The upgrade program left the old feisty kernel (2.6.20-16), that works OK. On WinXP or Vista it is also stuck at 1600 at a default install. I must use other programs like NHC or RMclock to change speed. So maybe ACPI is broken on this laptop (AHTEC Signal X-9600M, wich is a Quanta Z500N). Attached dmesg. note the lines: ACPI: Invalid _PSS data: freq is zero I understand that it worked before because of hardcoded speed and voltage tables in speedstep-centrino, that are deprecated in the new kernel. Is there a chance to get it fixed/patched on the next kernel revision? If not I will be hearing this annoying fan forever... :) ** Attachment added: "dmesg.txt" http://launchpadlibrarian.net/10333001/dmesg.txt -- [GUTSY] cpu freq scaling not working anymore https://bugs.launchpad.net/bugs/132271 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
