** Changed in: linux (Ubuntu)
Status: In Progress => Won't Fix
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Title:
Kernel reporting 100% battery, always
Status in
#17 looks like correct behavours. I also noticed #13 said battery was
acting without problems anymore. Is it still the case or did you have
problems when running #17?
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nevermind got it with following google-fu:
sudo apt install linux-tools-`uname -r` linux-tools-generic
Here are the results:
Plugged in (Charging):
$ cat /sys/class/power_supply/BAT1/status
Charging
$ sudo acpidbg -b "e _SB.PCI0.LPCB.BAT1._BST"
Evaluating \_SB.PCI0.LPCB.BAT1._BST
Evaluation of
no install candidate for acpidbg
** Changed in: linux (Ubuntu)
Status: Fix Released => In Progress
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Title:
Kernel reporting
In fact I suspect EC firmware may be mis-behaving. You can try to remove
all power sources (AC & battery) for a min to reset EC.
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BAT1 is the correct one according to acpi.log in #12.
There are no obvious code error in BIOS, but let's try to see whether
kernel correct reports what BIOS reports.
When AC is connected:
kernel's battery status: $ cat /sys/class/power_supply/BAT0/status
BIOS battery status: sudo acpidbg -b
Odd. Laptop is behaving normally, including power indications. I will
close this, and reopen if it happens again.
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
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$ ls /sys/class/power_supply/
ACAD BAT1
acpi log attached.
Sorry for the wait, I neglected to bring this laptop with me. I now
have access :)
** Attachment added: "acpi.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1879082/+attachment/5381390/+files/acpi.log
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It looks like OS is picking up the virtual (i.e. dummy) battery from
BIOS. Do you also observe this bug when booting with Ubuntu live on a
USB drive?
Can you run "ls /sys/class/power_supply/" to check whether there are
other batteries found by kernel? Usually BIOS likes starting names from
BAT0.
Strange. I also tested with Eoan's kernel (5.3.0 and 5.3.18) and I
still get this bug. I know it worked before the upgrade to Focal...
Any ideas?
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I will add, the new kernel is so much faster on boot!
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Title:
Kernel reporting 100% battery, always
Status in linux package in
** Tags added: kernel-bug-exists-upstream
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Title:
Kernel reporting 100% battery, always
Status in linux package in Ubuntu:
Also, power manager worked well before update to Focal from Eoan. So
this isn't likely tied to the distribution or bios. Probably the
kernel.
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I used release candidate 6, since it took me so long to respond. Sorry.
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Title:
Kernel reporting 100% battery, always
Status in
Here it is:
$ cat /proc/version_signature
cat: /proc/version_signature: No such file or directory
$ lsb_release -a
LSB Version:
core-11.1.0ubuntu2-noarch:printing-11.1.0ubuntu2-noarch:security-11.1.0ubuntu2-noarch
Distributor ID: Ubuntu
Description:Ubuntu 20.04 LTS
Release:20.04
Yes. I have ran Linux Mint Debian and Xubuntu on this laptop. All have
had the correct output (This was some time ago). I will use latest
kernel and report back.
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energy: 4294.84 Wh, this value doesn't make sense, it will make sense
if it is 42.94 instead of 4294.
And this one is not correct too: voltage: 65.535 V
Looks like this is a BIOS issue or kernel driver's issue. Did you
install other linux distributions before and did they work well on other
This is the output of:
$ acpi -b
Battery 0: Not charging, 100%
It is the same regardless of the actual charge state or even if plugged
in.
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