## page was copied from Testing/Cases/UMEdesktop-power
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[[https://wiki.ubuntu.com/Testing/Cases/UNR-advanced-features| Return to Advanced Features]]

= Advanced Power Management =


=== ACPI Status ===
|| Build tested || Tester || Date || Pass/Fail || Bug # || Comment ||
||1.0 ||cgregan ||20080919 ||Pass || || ||
||NHP20081217 ||thalchuk ||20081219 ||NA || ||Using 3rd party PowerManagement ||
||NHPGM20090114 ||thalchuk || 20090112 ||Pass || ||NA Using 3rd party PowerManagement ||

 1. '''Collect information on ACPI status'''
  a. Run the following command for device information
 
 {{{ acpi -V }}}

  a. Run the following command for version information
 {{{ acpi -v }}}

=== S-State ===
|| Build tested || Tester || Date || Pass/Fail || Bug # || Comment ||
||1.0 ||cgregan ||20080919 ||Pass || || ||
||NHP20081217 ||thalchuk ||20081219 ||Pass || || ||
||NHPGM20090114 ||thalchuk || 20090112 ||Pass || || ||

 1. '''Confirm the following state is supported'''
  a. Suspend to RAM, resume and check the keyboard, mouse, touchpad, video, USB, CDROM and network;
  a. Suspend to Disk, resume and check the keyboard, mouse, touchpad, video, USB, CDROM and network.

=== C-state ===
|| Build tested || Tester || Date || Pass/Fail || Bug # || Comment ||
|| || || || || || ||

 1. '''Confirm the following state is supported'''
  a. The every supported C-states can be entered on UP
  a. The every supported C-states can be entered on SMP.
  a. The C-states when AC adapter and battery are as power supplier
  a. The C-states change when switching between AC and Battery

=== P-state ===
|| Build tested || Tester || Date || Pass/Fail || Bug # || Comment ||
||1.0 ||cgregan ||20080919 ||Pass || || ||

 1. '''Confirm the following state is supported'''
  a. Verify the performance governor: set to performance governor and check the frequencies of all the CPUS. It should be the maximum supported freq.
  a. Verify the powersave governor: set to powersave governor and check the frequencies of all the CPUS. It should be the minimum supported freq.
  a. Verify the userspace governor: set to userspace governor and make sure, that it is set properly; set to all possible frequencies and check whether it is set properly.
  a. Verify that the on-demand governor obeys the scaling max and min frequencies: set to ondemand governor and make sure it is set properly; Take all CPUs to idle and make sure the frequencies goes to the minimum; Keep all CPUs busy and make sure freq goes to the maximum.

=== T-state ===
|| Build tested || Tester || Date || Pass/Fail || Bug # || Comment ||
|| || || || || || ||

 1. '''Confirm the following state is supported'''
  a. T-state performance: observe any performance differences through the /sys/devices/system/cpu/cpu*/cpufreq/stats and /proc/acpi/processor/*/power during controlled workloads.