Hi. I'm a begginer in ubuntu. I just installed de latest version (64 bits), but the wifi wont show any networks. I read that is a common problem but did not find the solution for my specific model (C845 SP4333KL). From what i read in other threads I put some commands on the console and showed this.

Thanks in advance for your help

commands:
gianni@Gianni-trabajo:~$ lspci -v
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at 90000000 (64-bit, non-prefetchable) [size=4M]
Memory at 80000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915

00:14.0 USB controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04) (prog-if 30 [XHCI])
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, medium devsel, latency 0, IRQ 41
Memory at 90600000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd

00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04)
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, fast devsel, latency 0, IRQ 42
Memory at 90614000 (64-bit, non-prefetchable) [size=16]
Capabilities: <access denied>
Kernel driver in use: mei
Kernel modules: mei

00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04) (prog-if 20 [EHCI])
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, medium devsel, latency 0, IRQ 16
Memory at 90619000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04)
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, fast devsel, latency 0, IRQ 44
Memory at 90610000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel

00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1c.2 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 3 (rev c4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: 90500000-905fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1c.3 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 4 (rev c4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: 90400000-904fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04) (prog-if 20 [EHCI])
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at 90618000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04)
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, medium devsel, latency 0
Capabilities: <access denied>
Kernel modules: lpc_ich

00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 40
I/O ports at 4088 [size=8]
I/O ports at 4094 [size=4]
I/O ports at 4080 [size=8]
I/O ports at 4090 [size=4]
I/O ports at 4060 [size=32]
Memory at 90617000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci

00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04)
Subsystem: Toshiba America Info Systems Device fb50
Flags: medium devsel
Memory at 90615000 (64-bit, non-prefetchable) [size=256]
I/O ports at 4040 [size=32]
Kernel modules: i2c-i801

02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8723
Subsystem: Realtek Semiconductor Co., Ltd. Device 0723
Flags: bus master, fast devsel, latency 0
I/O ports at 3000 [size=256]
Memory at 90500000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>

03:00.0 Ethernet controller: Atheros Communications Inc. AR8152 v2.0 Fast Ethernet (rev c1)
Subsystem: Toshiba America Info Systems Device fb50
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at 90400000 (64-bit, non-prefetchable) [size=256K]
I/O ports at 2000 [size=128]
Capabilities: <access denied>
Kernel driver in use: atl1c
Kernel modules: atl1c

gianni@Gianni-trabajo:~$ lspci | grep Network
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8723
gianni@Gianni-trabajo:~$
gianni@Gianni-trabajo:~$ iwconfig
eth0 no wireless extensions.

lo no wireless extensions.

gianni@Gianni-trabajo:~$
gianni@Gianni-trabajo:~$ ifconfig
eth0 Link encap:Ethernet direcciónHW 08:9e:01:5d:2b:54
Direc. inet:192.168.0.105 Difus.:192.168.0.255 Másc:255.255.255.0
Dirección inet6: fe80::a9e:1ff:fe5d:2b54/64 Alcance:Enlace
ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST MTU:1500 Métrica:1
Paquetes RX:11664 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:7393 errores:0 perdidos:0 overruns:0 carrier:1
colisiones:0 long.colaTX:1000
Bytes RX:9798763 (9.7 MB) TX bytes:961895 (961.8 KB)

lo Link encap:Bucle local
Direc. inet:127.0.0.1 Másc:255.0.0.0
Dirección inet6: ::1/128 Alcance:Anfitrión
ACTIVO BUCLE FUNCIONANDO MTU:16436 Métrica:1
Paquetes RX:624 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:624 errores:0 perdidos:0 overruns:0 carrier:0
colisiones:0 long.colaTX:0
Bytes RX:70038 (70.0 KB) TX bytes:70038 (70.0 KB)

gianni@Gianni-trabajo:~$ sudo su
[sudo] password for gianni:
root@Gianni-trabajo:/home/gianni#