Have a similar issue to this; I have an HP 15-f009ca with 64-bit Ubuntu 14.04 LTS as its sole OS (no dual boot), and it will randomly disconnect its wifi connection while simultaneously removing the connection from the Wireless Networks list.
I can usually reconnect using the "Connect to Hidden Wi-Fi Network..." option, but this is not ideal as 1) it doesn't always work (right now all networks have disappeared from the list and reconnecting is not working), 2) even when it does work, it keeps disconnecting while I'm trying to do system updates, and 3) this laptop is going to a grandparent who is not going to know to do that if the connection gets dropped.
I know it's not an issue with the router or the connection, as we have several computers in the house using this connection on a daily basis (including Windows machines, Ubuntu 14.04, and Ubuntu 12.04) with no drops and no disappearances from the Wireless Network list.
Here's the results of iwlist scan when disconnected (Cell 01 is the main connection I'm trying to use):
Results of iwconfig when connected:
Results of lspci:
Results of lshw -C network:
Any insight would be appreciated.
I can usually reconnect using the "Connect to Hidden Wi-Fi Network..." option, but this is not ideal as 1) it doesn't always work (right now all networks have disappeared from the list and reconnecting is not working), 2) even when it does work, it keeps disconnecting while I'm trying to do system updates, and 3) this laptop is going to a grandparent who is not going to know to do that if the connection gets dropped.
I know it's not an issue with the router or the connection, as we have several computers in the house using this connection on a daily basis (including Windows machines, Ubuntu 14.04, and Ubuntu 12.04) with no drops and no disappearances from the Wireless Network list.
Here's the results of iwlist scan when disconnected (Cell 01 is the main connection I'm trying to use):
Code:
eth0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
wlan0 Scan completed :
Cell 01 - Address: C0:C1:C0:22:91:4B
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=54/70 Signal level=-56 dBm
Encryption key:on
ESSID:"********"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000004184c985651
Extra: Last beacon: 8ms ago
IE: Unknown: 000753617669636873
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1606080400000000000000000000000000000000000000
IE: Unknown: DD700050F204104A00011010440001021041000100103B000103104700100E9514E096A2E86BB46D4C4324F64E40102100074C696E6B737973102300054531303030102400063132333435361042000234321054000800060050F2040001101100054531303030100800020084103C000101
IE: Unknown: DD090010180202F0040000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
Cell 02 - Address: 38:60:77:23:A5:97
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=28/70 Signal level=-82 dBm
Encryption key:on
ESSID:"******"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000017446166195
Extra: Last beacon: 732ms ago
IE: Unknown: 0006373031433238
IE: Unknown: 010482848B96
IE: Unknown: 030101
IE: Unknown: 050400010000
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32080C1218243048606C
IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1601080000000000000000000000000000000000000000
IE: Unknown: DD090010180201F02C0000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
Cell 03 - Address: B4:75:0E:FA:B6:29
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=46/70 Signal level=-64 dBm
Encryption key:on
ESSID:"********"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=00000233641529e6
Extra: Last beacon: 8ms ago
IE: Unknown: 000C4C696E6B7379733033313332
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1A6F1917FFFFFF0000000000000000000000000000000000000000
IE: Unknown: 3D16060F1600000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F080500000000000040
IE: Unknown: DD8C0050F204104A0001101044000102103B00010310470010E7E1206110AF22941714083450C62FB11021000B4C696E6B737973204C4C431023000E4C696E6B73797320454136393030102400064541363930301042000230311054000800060050F20400011011000F4C696E6B737973303331333220415010080002200C103C0001031049000600372A000120
IE: Unknown: DD090010180204001C0000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: 46057200010000
Cell 04 - Address: C0:C1:C0:22:91:4C
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=56/70 Signal level=-54 dBm
Encryption key:off
ESSID:"*******"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000004184c987050
Extra: Last beacon: 8ms ago
IE: Unknown: 000D536176696368732D6775657374
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: Unknown: 32040C121860
IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1606080400000000000000000000000000000000000000
IE: Unknown: DD090010180202F0040000
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
Cell 05 - Address: 20:C9:D0:1A:D0:6F
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=34/70 Signal level=-76 dBm
Encryption key:on
ESSID:"*******"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000005ff1832b189
Extra: Last beacon: 184ms ago
IE: Unknown: 0013526F6E27732057692D4669204E6574776F726B
IE: Unknown: 010882848B960C121824
IE: Unknown: 03010B
IE: Unknown: 050400030000
IE: Unknown: 0706434120010B1E
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 2D1AAD511BFFFFFF0000000000000000000000000000000000000000
IE: Unknown: 33027E95
IE: Unknown: 33025106
IE: Unknown: 3D160B000000000000000000000000000000000000000000
IE: Unknown: 46050200010000
IE: Unknown: DD180050F2020101010003A4000027A4000042435E0062322F00
IE: Unknown: DD0700039301740320
IE: Unknown: DD0E0017F2070001010620C9D01AD06F
IE: Unknown: DD0B0017F20100010100000007
Cell 06 - Address: 78:54:2E:EE:B4:A2
Channel:10
Frequency:2.457 GHz (Channel 10)
Quality=70/70 Signal level=-18 dBm
Encryption key:on
ESSID:"*******"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000d37e1d8b176
Extra: Last beacon: 152ms ago
IE: Unknown: 000A4861766F6352696E676F
IE: Unknown: 010882848B960C121824
IE: Unknown: 03010A
IE: Unknown: 050400010000
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: 2D1A2C181EFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D160A000000000000000000000000000000000000000000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD1E00904C332C181EFFFF000000000000000000000000000000000000000000
IE: Unknown: DD1A00904C340A000000000000000000000000000000000000000000
IE: Unknown: DD0600E04C020160
IE: Unknown: DD180050F204104A00011010440001021049000600372A000120
Cell 07 - Address: 8C:7F:3B:7E:9C:68
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=26/70 Signal level=-84 dBm
Encryption key:on
ESSID:"******"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=00000080a15ba1bc
Extra: Last beacon: 844ms ago
IE: Unknown: 000543686F6D65
IE: Unknown: 010882848B9624B0486C
IE: Unknown: 030101
IE: Unknown: 050400010000
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 32048C129860
IE: Unknown: 2D1ABD181BFFFFFF0000000000000000000000000000000000000000
IE: Unknown: 3D1601001300000000000000000000000000000000000000
IE: Unknown: DD090010180201001C0000
IE: WPA Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
Cell 08 - Address: 20:76:00:1D:FC:24
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=28/70 Signal level=-82 dBm
Encryption key:on
ESSID:"********"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/sResults of iwconfig when connected:
Code:
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"******"
Mode:Managed Frequency:2.437 GHz Access Point: C0:C1:C0:22:91:4B
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr=2347 B Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0Results of lspci:
Code:
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8210]
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 9840
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 0
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
00:02.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
00:02.5 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 01)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode]
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 39)
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39)
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 39)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 3a)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 02)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 5
01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188EE Wireless Network Adapter (rev 01)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 07)
06:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)Results of lshw -C network:
Code:
*-network
description: Wireless interface
product: RTL8188EE Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: wlan0
version: 01
serial: 90:48:9a:de:e4:b2
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8188ee driverversion=3.13.0-45-generic firmware=N/A ip=192.168.1.135 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:28 ioport:3000(size=256) memory:f1000000-f1003fff
*-network
description: Ethernet interface
product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:05:00.0
logical name: eth0
version: 07
serial: 6c:c2:17:65:65:1d
size: 10Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:76 ioport:2000(size=256) memory:f0104000-f0104fff memory:f0100000-f0103fff memory:f0110000-f011ffffAny insight would be appreciated.
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