I'm using 14.10 ubuntu and it is dual booted with windows 8.1, my issue occured "randomly" (being careful using that word - i dont remember if i did anything specific to cause the problem).
WiFi worked fine when i installed Ubuntu but recently when i try to connect to a network using either an (incorrect or correct) password, I am unable to successfully connect, after a certain amaount of time it asks for my credentials again and this process cycles. (Also i didnt install any drivers for wifi or bluetooth personally, it was setup on install) (bluetooth works)
I did once get a error message once saying Authentication failed could not connect but after restart it stopped showing.
I have tried to (0)google for similar problems (1) restart (2) sudo service network-manager restart (3)sudo service network-manager stop ...then... sudo service network-manager start (4) used the installer iso with try ubuntu to see if i can connect, this worked once but failed to work on other instances (5) scrapping all saved networks -> restart (6) creating new user then connecting
extra info: wifi is not softblocked or hardblocked.
I dont really know much about ubuntu (my first linux dist)
(also sorry if anything if not explained fully, if further info needed i will update/reply)
ok so ask requested:
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=16 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 4 (rev c4)
00:1c.5 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 6 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM77 Express Chipset LPC Controller (rev 04)
00:1f.2 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 630M] (rev a1)
08:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)
0a:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)
0b:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)
*-network
description: Wireless interface
product: Centrino Wireless-N 2230
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:0a:00.0
logical name: wlan0
version: c4
serial: 68:5d:43:78:76:cf
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.16.0-28-generic firmware=18.168.6.1 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:45 memory:d4500000-d4501fff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:0b:00.0
logical name: eth0
version: 07
serial: a0:b3:cc:44:19:a1
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.0.20 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
resources: irq:44 ioport:2000(size=256) memory:d4404000-d4404fff memory:d4400000-d4403fff
is there any settings that could be causing this?
Please share outputs of
iwconfig
lspci
lshw -C network
Try to connect ethernet cable and go System Settings > Software & Updates > Additional Drivers. There could be a driver for your wireless network interface.
Because your router already had given a local IP for your MAC address while you were in Windows. Cause of that router thinks that this is a suspicious connection attempt. In the conclusion, just reboot your router.
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