Most recent kernel where this bug did *NOT* occur: Every kernel I tried. Distribution: Gentoo Hardware Environment:Sony Vaio VGN-FE790 (PCG-7R1L), Sony VGP-BPS2B battery Software Environment: Problem Description: System monitors report charge % for battery, but do not report charge/discharge time. I assume that is related to: mike@dan:~> cat /proc/acpi/battery/BAT0/info present: yes design capacity: 53280 mWh last full capacity: 53280 mWh battery technology: non-rechargeable design voltage: 117880 mV design capacity warning: 1000 mWh design capacity low: 400 mWh capacity granularity 1: 100 mWh capacity granularity 2: 100 mWh model number: serial number: battery type: LiOn OEM info: Sony Corp. mike@dan:~> cat /proc/acpi/battery/BAT0/state present: yes capacity state: ok charging state: charging present rate: unknown remaining capacity: 16810 mWh present voltage: unknown Is this a support issue, or does the battery just not report enough information?
Created attachment 11336 [details] Kernel config
Created attachment 11337 [details] dmidecode output
>Most recent kernel where this bug did *NOT* occur: Every kernel I tried. Can you clarify 'bug did *NOT* occur: Every kernel I tried'?. Is it new bug? Please attach the battery files content in normal case (if present). Also, please attach acpidump and dmesg output.
Created attachment 11353 [details] Dmesg output
Created attachment 11354 [details] acpidump
No kernel I tried reported the information correctly. The battery files are above (unless I misunderstand what battery files you need?) BAT0 is the only battery.
Please look at your DSDT (_BST method): The 'present rate' and 'present voltage' are hard coded as 'unknown' value - 0xFFFFFFFF, so the system monitor can not determine charge/discharge time. This is hardware/bios issue, the battery does not not report enough information.