https://bugzilla.kernel.org/show_bug.cgi?id=41062
--- Comment #4 from Kamil Iskra <kamil.54...@iskra.name> 2011-08-24 05:19:21 --- Yes, I've seen bug #28192 before. I believe the issue I'm reporting is different. The problem in bug #28192 was inconsistency in the driver as the battery changes units from mAh to mWh (I've never seen that problem on my laptop(s), BTW, though perhaps it's simply because I rarely look in /sys). The problem I'm seeing is that the values reported are wrong *without* any changes of units -- they are wrong right from a power up/reboot. I'm using the latest BIOS. The issue is not x201-specific. I'm seeing it on x220 as well. Given that it affects more than one model, I'm guessing that many recent Thinkpad models may be affected. I could check on a few more systems (x200, x300, t410) if you wish. This problem is really easy to reproduce: 1. boot your Thinkpad 2. cat /proc/acpi/battery/BAT0/info 3. if the units for "design capacity", etc, are "mWh", the system is not affected 4. if the units are "mAh", check the value of "design capacity" against the battery specification (printed on the battery itself, available on Lenovo website, or in Lenovo Power Manager under Windows). My experience is that the value under Linux is *always* wrong. It is too high by a factor of "design voltage/10000". Workaround: while running on battery, suspend/resume, or rmmod/modprobe battery. This changes the unit to mWh and the values shown are what they should be. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. ------------------------------------------------------------------------------ EMC VNX: the world's simplest storage, starting under $10K The only unified storage solution that offers unified management Up to 160% more powerful than alternatives and 25% more efficient. Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
