Messages in this thread | ![/](/images/icornerl.gif) | | From | "Christopher Meredith" <> | Subject | PowerNow!, cpufreq, and swsusp | Date | Wed, 12 Mar 2003 12:06:33 -0500 |
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Just compiled the 2.5.63 kernel with the intention of getting support for certain features of my laptop. I;ve got a Mobile Athlon XP 1800+ w/ PowerNow! technology and was hoping to use it, as well as be able to "hibernate" the machine.
From .config:
# # Power management options (ACPI, APM) # CONFIG_PM=y CONFIG_SOFTWARE_SUSPEND=y
# # ACPI Support # CONFIG_ACPI=y # CONFIG_ACPI_HT_ONLY is not set CONFIG_ACPI_BOOT=y # CONFIG_ACPI_SLEEP is not set CONFIG_ACPI_AC=y CONFIG_ACPI_BATTERY=y CONFIG_ACPI_BUTTON=y CONFIG_ACPI_FAN=y CONFIG_ACPI_PROCESSOR=y CONFIG_ACPI_THERMAL=y # CONFIG_ACPI_TOSHIBA is not set CONFIG_ACPI_DEBUG=y CONFIG_ACPI_BUS=y CONFIG_ACPI_INTERPRETER=y CONFIG_ACPI_EC=y CONFIG_ACPI_POWER=y CONFIG_ACPI_PCI=y CONFIG_ACPI_SYSTEM=y CONFIG_APM=m # CONFIG_APM_IGNORE_USER_SUSPEND is not set # CONFIG_APM_DO_ENABLE is not set # CONFIG_APM_CPU_IDLE is not set # CONFIG_APM_DISPLAY_BLANK is not set # CONFIG_APM_RTC_IS_GMT is not set # CONFIG_APM_ALLOW_INTS is not set # CONFIG_APM_REAL_MODE_POWER_OFF is not set
# # CPU Frequency scaling # CONFIG_CPU_FREQ=y # CONFIG_CPU_FREQ_PROC_INTF is not set # CONFIG_CPU_FREQ_24_API is not set CONFIG_CPU_FREQ_TABLE=y
# # CPUFreq processor drivers # # CONFIG_X86_ACPI_CPUFREQ is not set # CONFIG_X86_POWERNOW_K6 is not set CONFIG_X86_POWERNOW_K7=y # CONFIG_X86_GX_SUSPMOD is not set # CONFIG_X86_SPEEDSTEP is not set # CONFIG_X86_P4_CLOCKMOD is not set # CONFIG_X86_LONGRUN is not set # CONFIG_X86_LONGHAUL is not set
And from /var/log/messages:
Mar 11 00:55:49 Judea kernel: powernow: AMD K7 CPU detected. Mar 11 00:55:49 Judea kernel: powernow: PowerNOW! Technology present. Can scale: frequency and voltage. Mar 11 00:55:49 Judea kernel: powernow: Found PSB header at c00f1920 Mar 11 00:55:49 Judea kernel: powernow: Table version: 0x12 Mar 11 00:55:49 Judea kernel: powernow: Flags: 0x0 (Mobile voltage regulator) Mar 11 00:55:49 Judea kernel: powernow: Settling Time: 100 microseconds. Mar 11 00:55:50 Judea kernel: powernow: Has 14 PST tables. (Only dumping ones relevant to this CPU). Mar 11 00:55:50 Judea kernel: powernow: PST:4 (@c00f1978) Mar 11 00:55:50 Judea kernel: powernow: cpuid: 0x780^Ifsb: 133^ImaxFID: 0x1^Istartvid: 0x9 Mar 11 00:55:50 Judea kernel: powernow: FID: 0x4 (5.0x [665MHz])^IVID: 0x13 (1.200V) Mar 11 00:55:50 Judea kernel: powernow: FID: 0x6 (6.0x [798MHz])^IVID: 0x13 (1.200V) Mar 11 00:55:50 Judea kernel: powernow: FID: 0xa (8.0x [1064MHz])^IVID: 0x13 (1.200V) Mar 11 00:55:50 Judea kernel: powernow: FID: 0xe (10.0x [1330MHz])^IVID: 0xb (1.450V) Mar 11 00:55:50 Judea kernel: powernow: FID: 0x1 (11.5x [1529MHz])^IVID: 0x9 (1.550V) Mar 11 00:55:50 Judea kernel: powernow: Minimum speed 665 MHz. Maximum speed 1529 MHz.
From /etc/lilo.conf: # LILO configuration file # generated by 'liloconfig' # # Start LILO global section append="hdc=ide-scsi, resume=/dev/hda3" boot = /dev/hda compact # faster, but won't work on all systems. prompt
When I boot, I get a message that no resume image was found (which is fine) and it boots normally. However, the documentation for swsusp says the following: "You need to append resume=/dev/your_swap_partition to kernel command line. Then you suspend by echo 4 > /proc/acpi/sleep."
As shown above, that line has been entered into lilo.conf, however, /proc/acpi/sleep does not exist. What is the problem here?
Also, cpufreq doesn't seem to do anything. Should it be working automatically? Even when the machine sits unattended for over 8 hours, the fan never turns off and the cpu temperature is consustently 69-70 degrees C. What must I do here? Thanks for your help!
~Christopher
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