I have a similar problem. I can't set the ondemand governer either through the command line or GUI since upgrading to Karmic. Here is the output of the above request from a boot to the previous kernel (it all works here):
ti...@seq:~$ uname -a Linux seq 2.6.28-15-generic #52-Ubuntu SMP Wed Sep 9 10:49:34 UTC 2009 i686 GNU/Linux ti...@seq:~$ echo "conservative" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor conservative ti...@seq:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor conservative ti...@seq:~$ echo "ondemand" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ondemand ti...@seq:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ondemand ti...@seq:~$ echo "userspace" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor userspace ti...@seq:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor userspace ti...@seq:~$ echo "powersave" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor powersave ti...@seq:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor powersave ti...@seq:~$ echo "performance" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance Booting to kernel after Karmic upgrade (same machine): ti...@seq:~$ uname -a Linux seq 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 GNU/Linux ti...@seq:~$ echo "conservative" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor conservative ti...@seq:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance ti...@seq:~$ echo "ondemand" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ondemand ti...@seq:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance ti...@seq:~$ echo "userspace" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor userspace ti...@seq:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor userspace ti...@seq:~$ echo "powersave" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor powersave ti...@seq:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor powersave ti...@seq:~$ echo "performance" | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance It's a P4 Celeron: ti...@seq:~$ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Celeron(R) CPU 2.00GHz stepping : 7 cpu MHz : 2000.000 cache size : 128 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up pebs bts cid bogomips : 4029.71 clflush size : 64 power management: I get these in syslog: Oct 30 13:51:30 seq kernel: [ 934.785094] conservative governor failed, too long transition latency of HW, fallback to performance governor Oct 30 13:51:30 seq kernel: [ 934.886535] ondemand governor failed, too long transition latency of HW, fallback to performance governor -- cannot change governor from command line https://bugs.launchpad.net/bugs/432706 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
