Você mudou a posição, tanto do notebook quanto do roteador?
Alterou alguma coisa no Ubuntu ou no roteador?
Não.
Vou refazer aqueles comandos que voce me mandou.
sudo lshw -C network
*-network
description: Wireless interface
product: RTL8191SEvB Wireless LAN Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 10
serial: 20:7c:8f:58:ef:be
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8192se driverversion=3.2.0-29-generic-pae firmware=N/A ip=192.168.1.120 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:16 ioport:3000(size=256) memory:95400000-95403fff
*-network
description: Ethernet interface
product: AR8131 Gigabit Ethernet
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:03:00.0
logical name: eth0
version: c0
serial: 00:40:a7:1f:a1:29
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI firmware=N/A latency=0 link=no multicast=yes port=twisted pair
resources: irq:44 memory:94400000-9443ffff ioport:2000(size=128)
ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:40:a7:1f:a1:29
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:44
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1725 errors:0 dropped:0 overruns:0 frame:0
TX packets:1725 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:300904 (300.9 KB) TX bytes:300904 (300.9 KB)
wlan0 Link encap:Ethernet HWaddr 20:7c:8f:58:ef:be
inet addr:192.168.1.120 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::227c:8fff:fe58:efbe/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:91753 errors:0 dropped:0 overruns:0 frame:0
TX packets:53085 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:124011806 (124.0 MB) TX bytes:5840697 (5.8 MB)
iwconfig
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"TP-LINK_A84236P"
Mode:Managed Frequency:2.452 GHz Access Point: B0:48:7A:A8:42:36
Bit Rate=150 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=68/70 Signal level=-42 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:78 Missed beacon:0
eth0 no wireless extensions.
nm-tool
NetworkManager Tool
State: connected (global)
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: atl1c
State: unavailable
Default: no
HW Address: 00:40:A7:1F:A1:29
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
- Device: wlan0 [TP-LINK_A84236P] ---------------------------------------------
Type: 802.11 WiFi
Driver: rtl8192se
State: connected
Default: yes
HW Address: 20:7C:8F:58:EF:BE
Capabilities:
Speed: 1 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
*TP-LINK_A84236P:Infra, B0:48:7A:A8:42:36, Freq 2452 MHz, Rate 54 Mb/s, Strength 76 WPA2
NetvirtuaCs14: Infra, E8:6D:52:B1:8B:3D, Freq 2462 MHz, Rate 54 Mb/s, Strength 84 WPA
DJ-Cubano: Infra, 68:7F:74:E0:6F:CA, Freq 2462 MHz, Rate 54 Mb/s, Strength 69 WPA WPA2
Netvirtua_09-201:Infra, 70:54:D2:D8:5C:37, Freq 2412 MHz, Rate 54 Mb/s, Strength 67 WPA WPA2
isabel: Infra, 94:0C:6D:C8:77:48, Freq 2422 MHz, Rate 54 Mb/s, Strength 85 WPA WPA2
GVT-1877: Infra, 6C:2E:85:EF:18:7B, Freq 2412 MHz, Rate 54 Mb/s, Strength 94 WPA2
TP-LINK_F93254: Infra, 00:23:CD:F9:32:54, Freq 2437 MHz, Rate 54 Mb/s, Strength 62 WPA2
davi: Infra, 38:6B:BB:46:C1:86, Freq 2437 MHz, Rate 54 Mb/s, Strength 60 WPA
GVT-562D: Infra, 84:C9:B2:C9:56:2E, Freq 2437 MHz, Rate 54 Mb/s, Strength 94 WPA2
Marte: Infra, 00:02:6F:51:8B:0E, Freq 2417 MHz, Rate 11 Mb/s, Strength 97
ogum: Infra, F4:6D:04:6D:8A:E1, Freq 2437 MHz, Rate 54 Mb/s, Strength 90 WPA2
IPv4 Settings:
Address: 192.168.1.120
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
rfkill list wifi
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
3.2.0-29-generic-pae
*Notei que a rede "Terra" não aparece mais no "nm-tool"