from https://help.ubuntu.com/community/WirelessTroubleshootingProcedure:

/0/100/1f.2        scsi0       storage        5 Series/3400 Series Chipset 4 por
/0/100/1f.2/0      /dev/sda    disk           500GB Hitachi HTS54505
/0/100/1f.2/0/1    /dev/sda1   volume         13GiB Windows NTFS volume
/0/100/1f.2/0/2    /dev/sda2   volume         100MiB Windows NTFS volume
/0/100/1f.2/0/3    /dev/sda3   volume         100GiB Windows NTFS volume
/0/100/1f.2/0/4    /dev/sda4   volume         352GiB Extended partition
/0/100/1f.2/0/4/5  /dev/sda5   volume         95GiB Linux filesystem partition
/0/100/1f.2/0/4/6  /dev/sda6   volume         257GiB HPFS/NTFS partition
/0/100/1f.2/1      /dev/cdrom  disk           DVDRAM GT31N
/0/100/1f.3                    bus            5 Series/3400 Series Chipset SMBus
/0/100/1f.6                    generic        5 Series/3400 Series Chipset Therm
/0/101                         bridge         Core Processor QuickPath Architect
/0/102                         bridge         Core Processor QuickPath Architect
/0/103                         bridge         Core Processor QPI Link 0
/0/104                         bridge         Core Processor QPI Physical 0
/0/105                         bridge         Core Processor Reserved
/0/106                         bridge         Core Processor Reserved
/1                             power          OEM_Define5
/2                             power          CRB Battery 0
Linux scott-laptop 2.6.38-10-generic #44-Ubuntu SMP Thu Jun 2 21:32:22 UTC 2011 
x86_64 x86_64 x86_64 GNU/Linux
[    2.069364] input: Lid Switch as 
/devices/LNXSYSTM:00/device:00/PNP0A08:00/PNP0C0D:00/input/input1
[    2.069384] ACPI: Lid Switch [LID0]
[    2.071149] ERST: Table is not found!
[    2.083926] i2c-core: driver [adp5520] using legacy suspend method
[    2.083927] i2c-core: driver [adp5520] using legacy resume method
[    2.109146] hub 1-0:1.0: USB hub found
[    2.129113] hub 2-0:1.0: USB hub found
[    2.149247] device-mapper: multipath: version 1.2.0 loaded
[    2.149251] device-mapper: multipath round-robin: version 1.0.0 loaded
[    2.152923] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[    2.258787] Switching to clocksource tsc
[    2.428420] usb 1-1: new high speed USB device using ehci_hcd and address 2
[    2.578798] hub 1-1:1.0: USB hub found
[    2.697888] usb 2-1: new high speed USB device using ehci_hcd and address 2
[    2.848246] hub 2-1:1.0: USB hub found
[    2.927571] usb 1-1.1: new high speed USB device using ehci_hcd and address 3
[   12.746433] intel ips 0000:00:1f.6: CPU TDP doesn't match expected value 
(found 25, expected 29)
[   13.039431] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[   13.049097] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input7
[   13.049179] usbcore: registered new interface driver uvcvideo
[   13.293847] ath9k 0000:02:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[   13.293862] ath9k 0000:02:00.0: setting latency timer to 64
[   13.427917] lp: driver loaded but no devices found
[   13.540891] Console: switching to colour frame buffer device 170x48
[   13.724737] ath: EEPROM regdomain: 0x65
[   13.724740] ath: EEPROM indicates we should expect a direct regpair map
[   13.724743] ath: Country alpha2 being used: 00
[   13.724745] ath: Regpair used: 0x65
[   14.186408] ieee80211 phy0: Selected rate control algorithm 
'ath9k_rate_control'
[   14.187048] Registered led device: ath9k-phy0::radio
[   14.187066] Registered led device: ath9k-phy0::assoc
[   14.187084] Registered led device: ath9k-phy0::tx
[   14.187099] Registered led device: ath9k-phy0::rx
[   14.848193] input: HDA Intel Mic as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[   14.848261] input: HDA Intel Headphone as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[   23.907064] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 2227.737272] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2244.792888] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2245.099046] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2258.593983] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2445.896561] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.086078] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.277858] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.522414] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.547986] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.573882] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.600544] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.625752] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.651396] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.679906] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.703199] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.729080] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.754902] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.780002] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.805011] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.831013] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.856665] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.882004] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.908620] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.933311] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.959233] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2446.985780] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.012090] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.037732] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.063304] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.089487] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.115912] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.140924] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.165936] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.191547] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2447.217504] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2458.512437] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2458.825084] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2459.193532] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2459.622874] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2460.044549] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2461.356100] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2461.560618] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2461.744959] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2461.942250] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2462.126155] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2462.324161] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2652.866177] usb 1-1.1: USB disconnect, address 3
[ 2656.818078] hub 1-1:1.0: unable to enumerate USB device on port 1
[ 2660.220996] usb 1-1.1: new high speed USB device using ehci_hcd and address 
31
[ 2663.494508] usb 1-1.1: new high speed USB device using ehci_hcd and address 
32
[ 2663.640715] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[ 2663.650489] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input11
[ 2698.055984] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2698.900500] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8F] (Node ffff8801d5252140), AE_NOT_FOUND 
(20110112/psparse-536)
[ 2708.635189] hda-intel: IRQ timing workaround is activated for card #0. 
Suggest a bigger bdl_pos_adj.
[30301.838180] ata1.00: failed command: READ FPDMA QUEUED
[30636.197768] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.427869] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.453374] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.478620] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.516270] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.543297] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.568861] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.593600] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.619545] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.644812] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.670616] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.696900] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.722089] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.747099] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.773260] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.799002] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.824348] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.850544] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.875244] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.900629] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.929524] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.952392] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30636.978511] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30637.004488] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30637.030252] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[30637.056251] ACPI Error: Method parse/execution failed 
[\_SB_.PCI0.LPCB.EC0_._Q8E] (Node ffff8801d5252118), AE_NOT_FOUND 
(20110112/psparse-536)
[57837.791036] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[57837.792051] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[57847.962893] eth0: no IPv6 routers present
[59308.044863] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Down
[60947.898266] usb 1-1.1: USB disconnect, address 32
[61370.818058] hub 1-1:1.0: unable to enumerate USB device on port 1
[61432.498175] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[61438.113802] NETDEV WATCHDOG: eth0 (atl1c): transmit queue 0 timed out
[61438.113805] Modules linked in: btrfs zlib_deflate libcrc32c ufs qnx4 hfsplus 
hfs minix ntfs vfat msdos fat jfs xfs exportfs reiserfs binfmt_misc parport_pc 
ppdev snd_hda_codec_hdmi snd_hda_codec_realtek arc4 snd_hda_intel snd_hda_codec 
snd_hwdep snd_pcm ath9k i915 snd_seq_midi mac80211 ath9k_common drm_kms_helper 
ath9k_hw drm uvcvideo lp videodev ath v4l2_compat_ioctl32 parport snd_rawmidi 
snd_seq_midi_event intel_ips acer_wmi i2c_algo_bit snd_seq joydev snd_timer 
snd_seq_device snd video sparse_keymap soundcore snd_page_alloc cfg80211 
psmouse serio_raw ahci atl1c libahci
[61438.113868]  <IRQ>  [<ffffffff81065cbf>] ? warn_slowpath_common+0x7f/0xc0
[61438.113881]  [<ffffffff81065db6>] ? warn_slowpath_fmt+0x46/0x50
[61438.113962]  [<ffffffff815cb430>] ? smp_apic_timer_interrupt+0x70/0x9b
[61438.154964] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[61443.014086] eth0: no IPv6 routers present
[61444.461422] usb 1-1.1: new high speed USB device using ehci_hcd and address 
120
[61444.607686] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[61444.617398] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input12
[61447.033174] usb 1-1.1: USB disconnect, address 120
[61447.425550] usb 1-1.1: new high speed USB device using ehci_hcd and address 
121
[61447.571677] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[61447.581427] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input13
[61450.099038] usb 1-1.1: USB disconnect, address 121
[61450.419605] usb 1-1.1: new high speed USB device using ehci_hcd and address 
122
[61450.565556] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[61450.575394] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input14
[66186.831494] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Down
[66188.464715] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[66193.720182] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[68776.720743] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Down
[68778.284762] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[68783.607150] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[70383.148593] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Down
[70384.853872] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[70390.416802] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[70397.044128] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Down
[70398.650459] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[70404.388931] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[75097.639607] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Down
[76648.663215] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[76653.939178] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[76659.137293] eth0: no IPv6 routers present
[76748.935120] usb 1-1.1: USB disconnect, address 122
[76749.722321] usb 1-1.1: new high speed USB device using ehci_hcd and address 
125
[76749.868449] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[76749.878249] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input15
[76750.944495] usb 1-1.1: USB disconnect, address 125
[76751.298432] usb 1-1.1: new high speed USB device using ehci_hcd and address 
126
[76754.031632] usb 1-1.1: new high speed USB device using ehci_hcd and address 
11
[76754.177611] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[76754.187403] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input16
[77214.922914] usb 1-1.1: USB disconnect, address 11
[77224.463501] usb 1-1.1: new high speed USB device using ehci_hcd and address 
48
[77224.609773] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[77224.619496] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input17
[77226.858750] usb 1-1.1: reset high speed USB device using ehci_hcd and 
address 48
[77229.673035] usb 1-1.1: reset high speed USB device using ehci_hcd and 
address 48
[77304.462744] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Down
[159468.030114] usb 1-1.1: reset high speed USB device using ehci_hcd and 
address 48
[159564.169227] usb 1-1.1: reset high speed USB device using ehci_hcd and 
address 48
[159568.061453] usb 1-1.1: reset high speed USB device using ehci_hcd and 
address 48
[159594.729026] usb 1-1.1: USB disconnect, address 48
[159595.686507] usb 1-1.1: new high speed USB device using ehci_hcd and address 
52
[159595.832901] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[159595.842509] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input18
[160054.865306] usb 1-1.1: USB disconnect, address 52
[160060.571002] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[160063.447797] usb 1-1.1: new high speed USB device using ehci_hcd and address 
86
[160063.594151] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[160063.603922] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input19
[160066.063288] atl1c 0000:01:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full 
Duplex>
[160066.292635] usb 1-1.1: USB disconnect, address 86
[160066.651435] usb 1-1.1: new high speed USB device using ehci_hcd and address 
87
[160066.807573] uvcvideo: Found UVC 1.00 device 1.3M WebCam (064e:a219)
[160066.817338] input: 1.3M WebCam as 
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input20
[160070.992536] eth0: no IPv6 routers present
        Manufacturer: Acer
        Product Name: Aspire 5745
        Manufacturer: Acer
        Product Name: ZR7
        Manufacturer: Chassis Manufacturer
        String 1: String1 for Original Equipment Manufacturer
        String 2: String2 for Original Equipment Manufacturer
        String 3: String3 for Original Equipment Manufacturer
        String 4: String4 for Original Equipment Manufacturer
        String 5: String5 for Original Equipment Manufacturer
        Option 1: String1 for Type12 Equipment Manufacturer
        Option 2: String2 for Type12 Equipment Manufacturer
        Option 3: String3 for Type12 Equipment Manufacturer
        Option 4: String4 for Type12 Equipment Manufacturer
        Manufacturer: OEM_Define2
        Manufacturer: -Virtual Battery 0-
        Manufacture Date: 10/12/2007
        Manufacturer: ELPIDA
        Manufacturer: Not Specified
        Manufacturer: Not Specified
        Manufacturer: Not Specified
        Manufacturer: Intel(R) Corporation
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=14 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          
# which ath5k cannot recover. To prevent this condition, stop
blacklist ath_pci
blacklist eth1394
# replaced by p54pci
blacklist prism54
# replaced by b43 and ssb.
blacklist bcm43xx
blacklist uart6850
blacklist twl4030_wdt
21: PCI 100.0: 0200 Ethernet controller                         
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_1969_1073
  Unique ID: rBUF.Uf9O1bZiXVF
  Parent ID: z8Q3.PWumXH+ZoD3
  SysFS ID: /devices/pci0000:00/0000:00:1c.0/0000:01:00.0
  SysFS BusID: 0000:01:00.0
  Hardware Class: network
  Model: "Attansic Ethernet controller"
  Vendor: pci 0x1969 "Attansic Technology Corp."
  Device: pci 0x1073 
  SubVendor: pci 0x1025 "Acer Incorporated [ALI]"
  SubDevice: pci 0x035b 
  Revision: 0xc0
  Driver: "atl1c"
  Driver Modules: "atl1c"
  Device File: eth0
  Memory Range: 0xb3400000-0xb343ffff (rw,non-prefetchable)
  I/O Ports: 0x2000-0x2fff (rw)
  IRQ: 43 (5554 events)
  HW Address: c8:0a:a9:74:40:7e
  Link detected: yes
  Module Alias: "pci:v00001969d00001073sv00001025sd0000035Bbc02sc00i00"
  Driver Info #0:
    Driver Status: atl1c is active
    Driver Activation Cmd: "modprobe atl1c"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #13 (PCI bridge)

22: PCI 200.0: 0282 WLAN controller
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_168c_2a
  Unique ID: y9sn.lGgwO9_JimF
  Parent ID: HnsE.ZfKGL_Ad337
  SysFS ID: /devices/pci0000:00/0000:00:1c.5/0000:02:00.0
  SysFS BusID: 0000:02:00.0
  Hardware Class: network
  Model: "Atheros AR928X Wireless Network Adapter (PCI-Express)"
  Vendor: pci 0x168c "Atheros Communications Inc."
  Device: pci 0x002a "AR928X Wireless Network Adapter (PCI-Express)"
  SubVendor: pci 0x105b "Foxconn International, Inc."
  SubDevice: pci 0xe01f 
  Revision: 0x01
  Driver: "ath9k"
  Driver Modules: "ath9k"
  Device File: wlan0
  Features: WLAN
  Memory Range: 0xb2400000-0xb240ffff (rw,non-prefetchable)
  IRQ: 17 (30 events)
  HW Address: 78:e4:00:5c:25:de
  Link detected: no
  WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 12 13
  WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457 
2.462 2.467 2.472
  WLAN encryption modes: WEP40 WEP104 TKIP CCMP
  WLAN authentication modes: open sharedkey wpa-psk wpa-eap
  Module Alias: "pci:v0000168Cd0000002Asv0000105Bsd0000E01Fbc02sc80i00"
  Driver Info #0:
    Driver Status: ath9k is active
    Driver Activation Cmd: "modprobe ath9k"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #14 (PCI bridge)

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
Module                  Size  Used by
btrfs                 550457  0 
zlib_deflate           27074  1 btrfs
libcrc32c              12644  1 btrfs
ufs                    75815  0 
qnx4                   17685  0 
hfsplus                84797  0 
hfs                    54731  0 
minix                  36367  0 
ntfs                  101769  0 
vfat                   21708  0 
msdos                  17333  0 
fat                    61374  2 vfat,msdos
jfs                   182186  0 
xfs                   823190  0 
exportfs               12998  1 xfs
reiserfs              248223  0 
binfmt_misc            17565  1 
parport_pc             36959  0 
ppdev                  17113  0 
snd_hda_codec_hdmi     28167  1 
snd_hda_codec_realtek   336771  1 
arc4                   12529  2 
snd_hda_intel          33211  2 
snd_hda_codec         103804  3 
snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep              13604  1 snd_hda_codec
snd_pcm                96391  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
ath9k                 118238  0 
i915                  514975  9 
snd_seq_midi           13324  0 
mac80211              294370  1 ath9k
ath9k_common           13851  1 ath9k
drm_kms_helper         42136  1 i915
ath9k_hw              323077  2 ath9k,ath9k_common
drm                   227495  5 i915,drm_kms_helper
uvcvideo               72195  0 
lp                     17825  0 
videodev               82052  1 uvcvideo
ath                    23773  2 ath9k,ath9k_hw
v4l2_compat_ioctl32    17078  1 videodev
parport                46458  3 parport_pc,ppdev,lp
snd_rawmidi            30486  1 snd_seq_midi
snd_seq_midi_event     14899  1 snd_seq_midi
intel_ips              18097  0 
acer_wmi               23809  0 
i2c_algo_bit           13400  1 i915
snd_seq                61621  2 snd_seq_midi,snd_seq_midi_event
joydev                 17606  0 
snd_timer              29602  2 snd_pcm,snd_seq
snd_seq_device         14462  3 snd_seq_midi,snd_rawmidi,snd_seq
snd                    67382  14 
snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
video                  19438  1 i915
sparse_keymap          13898  1 acer_wmi
soundcore              12680  1 snd
snd_page_alloc         18529  2 snd_hda_intel,snd_pcm
cfg80211              178528  3 ath9k,mac80211,ath
psmouse                73535  0 
serio_raw              13166  0 
ahci                   25951  4 
atl1c                  41171  0 
libahci                26642  1 ahci

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https://bugs.launchpad.net/bugs/756226

Title:
  Acer 5745G: wireless is disable when upgrade from 10.10 to 11.04

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