Mageia forum

Hi everyone,

I'm trying to get the power consumption under control on my laptop, and first on the list was the biggest offender - bluetooth. I don't use it and it seems to be the gulping up the majority of my battery.

First i killed and blackilisted 'btusb' - power consumption went down. Then i blacklisted 'bluetooth' - power goes down a bit more. But now at the top of the list i have a module called 'radio:samsung-bluetooth'. Powertop claims that on average its sucking up 7W of power! Blacklisting the name doesn't help and trying to kill it with 'modprobe' fails, because it can't find the above module.

Has anyone else come across 'radio:samsung-bluetooth' and is there a way to get rid of if for good?

Please post the output as root of

Code: Select all

lspcidrake -v
rfkill list all
lsmod | grep -e samsung -e wmi -e hid

when the bluetooth module is enabled.

Also, what laptop make/model do you use?

lspcidrake -v

Code: Select all

iwlwifi         : Intel Corporation|Centrino Advanced-N 6235 [NETWORK_OTHER] (vendor:8086 device:088e subv:8086 subd:4060) (rev: 24)
Card:NVIDIA GeForce 400 series and later: NVIDIA Corporation|GK107M [GeForce GT 650M] [DISPLAY_VGA] (vendor:10de device:0fd1 subv:144d subd:c0d1) (rev: a1)
i2c_i801        : Intel Corporation|7 Series/C210 Series Chipset Family SMBus Controller [SERIAL_SMBUS] (vendor:8086 device:1e22 subv:144d subd:c0d1) (rev: 04)
unknown         : Intel Corporation|7 Series Chipset Family 6-port SATA Controller [AHCI mode] [STORAGE_SATA] (vendor:8086 device:1e03 subv:144d subd:c0d1) (rev: 04)
lpc_ich         : Intel Corporation|HM76 Express Chipset LPC Controller [BRIDGE_ISA] (vendor:8086 device:1e59 subv:144d subd:c0d1) (rev: 04)
ehci_pci        : Intel Corporation|7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 [SERIAL_USB] (vendor:8086 device:1e26 subv:144d subd:c0d1) (rev: 04)
shpchp          : Intel Corporation|7 Series/C210 Series Chipset Family PCI Express Root Port 1 [BRIDGE_PCI] (vendor:8086 device:1e10) (rev: c4)
snd_hda_intel   : Intel Corporation|7 Series/C210 Series Chipset Family High Definition Audio Controller [MULTIMEDIA_AUDIO_DEV] (vendor:8086 device:1e20 subv:144d subd:c0d1) (rev: 04)
ehci_pci        : Intel Corporation|7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 [SERIAL_USB] (vendor:8086 device:1e2d subv:144d subd:c0d1) (rev: 04)
unknown         : Intel Corporation|7 Series/C210 Series Chipset Family MEI Controller #1 [COMMUNICATION_OTHER] (vendor:8086 device:1e3a subv:144d subd:c0d1) (rev: 04)
xhci_hcd        : Intel Corporation|7 Series/C210 Series Chipset Family USB xHCI Host Controller [SERIAL_USB] (vendor:8086 device:1e31 subv:144d subd:c0d1) (rev: 04)
Card:Intel 810 and later: Intel Corporation|3rd Gen Core processor Graphics Controller [DISPLAY_VGA] (vendor:8086 device:0166 subv:144d subd:c0d1) (rev: 09)
shpchp          : Intel Corporation|Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port [BRIDGE_PCI] (vendor:8086 device:0151) (rev: 09)
unknown         : Intel Corporation|3rd Gen Core processor DRAM Controller [BRIDGE_HOST] (vendor:8086 device:0154 subv:144d subd:c0d1) (rev: 09)
hub             : Linux 3.12.18-desktop-1.mga4 xhci_hcd|xHCI Host Controller [Hub|Unused|Full speed (or root) hub] (vendor:1d6b device:0003)
hub             : Linux 3.12.18-desktop-1.mga4 xhci_hcd|xHCI Host Controller [Hub|Unused|Full speed (or root) hub] (vendor:1d6b device:0002)
hub             : Linux 3.12.18-desktop-1.mga4 ehci_hcd|EHCI Host Controller [Hub|Unused|Full speed (or root) hub] (vendor:1d6b device:0002)
hub             : Intel Corp.|Integrated Rate Matching Hub [Hub|Unused|Full speed (or root) hub] (vendor:8087 device:0024)
unknown         : Intel Corp.|Unknown [Wireless|Radio Frequency|Bluetooth] (vendor:8087 device:07da)
hub             : Linux 3.12.18-desktop-1.mga4 ehci_hcd|EHCI Host Controller [Hub|Unused|Full speed (or root) hub] (vendor:1d6b device:0002)
hub             : Intel Corp.|Integrated Rate Matching Hub [Hub|Unused|Full speed (or root) hub] (vendor:8087 device:0024)
uvcvideo        : Generic|WebCam SC-13HDL11939N [Video|Video Control] (vendor:2232 device:1029)

rfkill list all

Code: Select all

0: samsung-wlan: Wireless LAN
   Soft blocked: no
   Hard blocked: no
1: samsung-bluetooth: Bluetooth
   Soft blocked: no
   Hard blocked: no
2: phy0: Wireless LAN
   Soft blocked: no
   Hard blocked: no

lsmod

Code: Select all

samsung_laptop         14486  0
rfkill                 22676  5 cfg80211,samsung_laptop
mxm_wmi                13021  1 nouveau
wmi                    19177  2 mxm_wmi,nouveau
video                  19268  3 i915,samsung_laptop,nouveau

I'm using Samsung NP550P5C