Difference between revisions of "Board:lenovo/x60"

From coreboot
Jump to navigation Jump to search
Line 149: Line 149:
Battery indictor in various DE's can be unreliable. (showing 50% available for instance, when fully charged).  
Battery indictor in various DE's can be unreliable. (showing 50% available for instance, when fully charged).  
Using CLI tools to show battery info can show a sudden(brief) spike in reported power usage when disconnecting AC.
Using CLI tools to show battery info can show a sudden(brief) spike in reported power usage when disconnecting AC.
High pitch sound is present when CPU is idle (workaround: "processor.max_cstate=2" or "idle=halt" on kernel command line):
http://libreboot.org/howto.html#cpu_cstates_buzzing


* Add support for more batteries in ACPI.
* Add support for more batteries in ACPI.
Line 188: Line 185:
  first_battery = Primary
  first_battery = Primary
  bluetooth = Disable
  bluetooth = Disable
==="whining" (buzzing) noise when idle===
Use "idle=halt" (higher power consumption) or "processor.max_cstate=2" (higher power consumption, but not as bad) kernel parameter in GRUB.
Note:
Boot without these options, and there will be a high pitched noise coming from the board when the system is idle.
A better workaround is to boot without these options, and run '''sudo powertop'''
Under "tunables", set all options to "Good" settings. This kills the noise.
'''By using this, power consumption falls lower: near the levels in Lenovo BIOS''' (better battery life).
=== cbmem console ===
=== cbmem console ===



Revision as of 18:33, 7 June 2014