my system configuration is Intel Xeon Dual core processor X5260 3.33Ghz with following cpu frequency related BIOS options: acpi support(yes/no) C1 Enhanced Mode(enabled/disabled) Intel EIST Support(disabled/(GV1/GV3 only)/C states only/Enabled) I tried to enable cpu frequency scaling on Suse Linux Enterprise Server 10 service pack 2 . #uname -r 2.6.16.60-0.21-smp # ls /lib/modules/2.6.16.60-0.21-smp/kernel/arch/x86_64/kernel/cpufreq/ acpi-cpufreq.ko powernow-k8.ko speedstep-centrino.ko #ls /lib/modules/2.6.16.60-0.21-smp/kernel/drivers/cpufreq/: cpufreq_conservative.ko cpufreq_ondemand.ko cpufreq_powersave.ko cpufreq_stats.ko cpufreq_userspace.ko freq_table.ko when i tried to enable acpi-cpufreq the following error came. # modprobe acpi-cpufreq FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.16.60-0.21-smp/kernel/arch /x86_64/kernel/cpufreq/acpi-cpufreq.ko): No such device i changed the related BIOS options but nothing happened. Then i tried same thing on fedora-11 #uname -r 2.6.29.4-167.fc11.x86_64 #ls /lib/modules/$(uname -r)/kernel/drivers/cpufreq/ \ /lib/modules/$(uname -r)/kernel\ /arch/*/kernel/cpu/cpufreq/ acpi-cpufreq.ko p4-clockmod.ko powernow-k8.ko speedstep-lib.ko cpufreq_conservative.ko cpufreq_powersave.ko freq_table.ko cpufreq_ondemand.ko cpufreq_stats.ko i succeed in enabling acpi-cpufreq (however when i selected acpi=no in BIOS) and my /proc/modules looks like this fuse 57920 2 - Live 0xffffffffa01a3000 acpi_cpufreq 9832 0 - Live 0xffffffffa019e000 freq_table 4816 1 acpi_cpufreq, Live 0xffffffffa019a000 bridge 51168 0 - Live 0xffffffffa0188000 stp 2644 1 bridge, Live 0xffffffffa0185000 llc 6128 2 bridge,stp, Live 0xffffffffa017e000 bnep 14288 2 - Live 0xffffffffa0175000 sco 11780 2 - Live 0xffffffffa016d000 l2cap 22480 3 bnep, Live 0xffffffffa0162000 bluetooth 53300 5 bnep,sco,l2cap, Live 0xffffffffa014f000 sunrpc 185448 1 - Live 0xffffffffa011c000 ip6t_REJECT 4064 2 - Live 0xffffffffa0116000 nf_conntrack_ipv6 14632 2 - Live 0xffffffffa010d000 ip6table_filter 3936 1 - Live 0xffffffffa0107000 ip6_tables 18784 1 ip6table_filter, Live 0xffffffffa00fd000 ipv6 290112 28 ip6t_REJECT,nf_conntrack_ipv6, Live 0xffffffffa00b1000 dm_multipath 16168 0 - Live 0xffffffffa00a2000 uinput 8704 0 - Live 0xffffffffa000b000 usb_storage 101472 0 - Live 0xffffffffa0087000 iTCO_wdt 13120 0 - Live 0xffffffffa0081000 i2c_i801 10064 0 - Live 0xffffffffa0079000 iTCO_vendor_support 3476 1 iTCO_wdt, Live 0xffffffffa0073000 i2c_core 22288 1 i2c_i801, Live 0xffffffffa0068000 i5100_edac 7328 0 - Live 0xffffffffa0061000 edac_core 42048 1 i5100_edac, Live 0xffffffffa0051000 e1000e 114672 0 - Live 0xffffffffa0030000 pata_it8213 5572 0 - Live 0xffffffffa0029000 pcspkr 2848 0 - Live 0xffffffffa0023000 joydev 11584 0 - Live 0xffffffffa001b000 serio_raw 6228 0 - Live 0xffffffffa0014000 ata_generic 5812 0 - Live 0xffffffffa0007000 pata_acpi 5040 0 - Live 0xffffffffa0000000 But i didnt get any cpufreq directory in /sys/devices/system/cpu/cpu0/ Fedora 11 is just for checking purpose. I want to enable Cpu Frequency Scaling on my Suse server but couldn't figure out what actually is the problem. Do i need to recompile my kernel ?? or my system is not supported?? or is there something which i skip??? Rajeev Kumar -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
