Public bug reported:

This is on a System76 Pangolin, a pan6. It is from October 2009.

Aug  2 14:51:29 jrwren-Pangolin-Performance cpufreqd: 
get_class_device_attribute: couldn't open 
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/power_now (No 
such file or directory)
Aug  2 14:51:29 jrwren-Pangolin-Performance cpufreqd: 
get_class_device_attribute: cannot read 
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0/current_now 
(No such device)
Aug  2 14:51:29 jrwren-Pangolin-Performance cpufreqd: acpi_battery_init        
: Couldn't open BAT0 attributes

is written to syslog every few seconds. If i hadn't noticed it would
have quickly filled my disk.

⟫ lspci
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory 
Controller Hub (rev 07)
00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express 
Graphics Port (rev 07)
00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #4 (rev 03)
00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #5 (rev 03)
00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #6 (rev 03)
00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI 
Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio 
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 
(rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 
(rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 
(rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 
(rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 
(rev 03)
00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #1 (rev 03)
00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #3 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI 
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port 
SATA Controller [IDE mode] (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
00:1f.5 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port 
SATA Controller [IDE mode] (rev 03)
01:00.0 VGA compatible controller: NVIDIA Corporation G98M [GeForce G 105M] 
(rev a1)
02:00.0 Network controller: Intel Corporation Ultimate N WiFi Link 5300
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 
PCI Express Gigabit Ethernet Controller (rev 02)
07:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller
07:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller
07:00.3 System peripheral: JMicron Technology Corp. MS Host Controller

> lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.1 LTS
Release:        16.04
Codename:       xenial

> uname -a
Linux jrwren-Pangolin-Performance 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 
18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

** Affects: cpufreqd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1609089

Title:
  spews messages to syslog endlessly

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