loosing battery power big time when using wifi
Posted: Fri Mar 01, 2013 2:03 pm
I get decent power from a full charged battery without wifi. But when wifi is turned ON and connected to internet my battery drains like anything. It goes to 10 % in 20 minutes time.
Laptop runs Linux Mint 14 with Cinnamon desktop, nvidia graphics driver (via nvidia-current) and ath9k wifi drivers.
getafix@mintbox ~ $ sudo lsmod | grep -i ath
[sudo] password for getafix:
ath9k 116549 0
mac80211 461161 1 ath9k
ath9k_common 13783 1 ath9k
ath9k_hw 376155 2 ath9k,ath9k_common
ath 19187 3 ath9k,ath9k_common,ath9k_hw
cfg80211 175375 3 ath9k,mac80211,ath
getafix@mintbox ~ $
Wifi device details follow.
getafix@mintbox ~ $ lspci -vvv | grep -A 10 Wireless
02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
Subsystem: Foxconn International, Inc. T77H126.00 802.11bgn Wireless Half-size Mini PCIe Card
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at e7a00000 (64-bit, non-prefetchable)
Capabilities: <access denied>
Kernel driver in use: ath9k
Kernel modules: ath9k
getafix@mintbox ~ $
Kernel: 3.5.0-17-generic
Can anyone lend a helping hand? Thanks.
Laptop runs Linux Mint 14 with Cinnamon desktop, nvidia graphics driver (via nvidia-current) and ath9k wifi drivers.
getafix@mintbox ~ $ sudo lsmod | grep -i ath
[sudo] password for getafix:
ath9k 116549 0
mac80211 461161 1 ath9k
ath9k_common 13783 1 ath9k
ath9k_hw 376155 2 ath9k,ath9k_common
ath 19187 3 ath9k,ath9k_common,ath9k_hw
cfg80211 175375 3 ath9k,mac80211,ath
getafix@mintbox ~ $
Wifi device details follow.
getafix@mintbox ~ $ lspci -vvv | grep -A 10 Wireless
02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
Subsystem: Foxconn International, Inc. T77H126.00 802.11bgn Wireless Half-size Mini PCIe Card
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at e7a00000 (64-bit, non-prefetchable)
Capabilities: <access denied>
Kernel driver in use: ath9k
Kernel modules: ath9k
getafix@mintbox ~ $
Kernel: 3.5.0-17-generic
Can anyone lend a helping hand? Thanks.