Ubuntu
acpi package

Immediate shutdown when battery critically low, no hibernate/suspend

Asked by Göktuğ Kayaalp

I have Ubuntu 12.04 installed, on Compaq Presario CQ62 laptop. When battery is critically low, it halts immediately, without a warning or else. I have been keepin an eye on that for a short time, and I plug the power in when it needs, but the battery goes empty very quickly too (less then half an hour sometimes to consume all the battery).

I had a look at the power settings, Hibernate option was disabled for "When power critically low". I dont have a battery-killing use of my laptop, I actually use gedit, wireless and GNOME all the time, no games or else.

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Göktuğ Kayaalp (cadadr) said : 		#1

#Some basic info about my hardware&OS

~$ uname -a
Linux cp-cq62 3.2.0-24-generic-pae #39-Ubuntu SMP Mon May 21 18:54:21 UTC 2012 i686 i686 i386 GNU/Linux

~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (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.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)
00:1d.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.3 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (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 SATA controller: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI mode] (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
00:1f.6 Signal processing controller: Intel Corporation 82801I (ICH9 Family) Thermal Subsystem (rev 03)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvA Wireless LAN Controller (rev 10)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)

#I have the power management on for the wlan0
~$ iwconfig
lo no wireless extensions.

virbr0 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"Huawei_HG521"
          Mode:Managed Frequency:2.412 GHz Access Point: 00:E0:4D:CD:76:87
          Bit Rate=54 Mb/s Tx-Power=20 dBm
          Retry long limit:7 RTS thr=2347 B Fragment thr:off
          Power Management:on
          Link Quality=70/70 Signal level=-36 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:201 Missed beacon:0

eth0 no wireless extensions.

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actionparsnip (andrew-woodhead666) said : 		#2

I suggest you report a bug with ACPI, make sure you have the latest BIOS too.

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