Primero ,te fijas como el sistema identifica tu interfaz wifi con ( abrís un emulador de terminal y te pones como root)

Tu contraseña de root a continuación , a partir de allí quedas como root # ( superusuario)

Comenzá por ver si tenes la wifi activa
Es probable que te haga falta leer esto:
http://wiki.debian.org/rtl819x
Edito: Una sugerencia de usuario a usuario,quizá debieras modificar el título ,en iniciarlo con algo más indicativo sobre el asunto en cuestión ,¿ buscarias por " ayuda " , o por wifi rt8172 ? ; realtek 8172 ? ,,o cosa parecida ?

Después de escribir ifconfig -a, me sale lo siguiente:

Cosme2:/home/cosme# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:26:22:33:89:af
inet addr:192.168.0.13 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::226:22ff:fe33:89af/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2329 errors:0 dropped:0 overruns:0 frame:0
TX packets:2209 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2535426 (2.4 MiB) TX bytes:376332 (367.5 KiB)
Interrupt:250 Base address:0xa000

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:121 errors:0 dropped:0 overruns:0 frame:0
TX packets:121 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:27878 (27.2 KiB) TX bytes:27878 (27.2 KiB)

no veo por ahi la rt8172... o es eso que pone local loopback? Vengo de windows y aún no me entero muy bien de estas cosas

Fijate en el enlace que te pase ,parece que necesitas el firmware rtl8192s, Intenta seguir las intrucciones para tu version de debian .

Segun lo que puedo ovservar, el problema es que no se detectó la placa de red wifi, estás seguro que la placa está encendida (he visto algunas laptops que encienden con la placa desconectada y hay que "prenderla" cuando uno quiere usuarla)?

Podrías tambien postear la salida de dmesg?

Saludos!
Gonzalo.

Supongo que te referirás al interruptor que activa el wifi... sí, si que está activado. Tengo windows en otra partición y funciona bien tal y como está...

He escrito dmesg en la consola (aunque no sé muy bien para qué sirve...) y me ha salido una buena parrafada:

53)
[ 1.797636] io scheduler noop registered
[ 1.797636] io scheduler anticipatory registered
[ 1.797636] io scheduler deadline registered
[ 1.797636] io scheduler cfq registered (default)
[ 1.797636] pci 0000:02:00.0: Boot video device
[ 1.797636] PCI: Setting latency timer of device 0000:00:02.0 to 64
[ 1.797636] assign_interrupt_mode Found MSI capability
[ 1.797636] Allocate Port Service[0000:00:02.0:pcie00]
[ 1.797636] PCI: Setting latency timer of device 0000:00:04.0 to 64
[ 1.797636] assign_interrupt_mode Found MSI capability
[ 1.797636] Allocate Port Service[0000:00:04.0:pcie00]
[ 1.797636] Allocate Port Service[0000:00:04.0:pcie02]
[ 1.797636] PCI: Setting latency timer of device 0000:00:05.0 to 64
[ 1.797636] assign_interrupt_mode Found MSI capability
[ 1.797636] Allocate Port Service[0000:00:05.0:pcie00]
[ 1.797636] PCI: Setting latency timer of device 0000:00:06.0 to 64
[ 1.797636] assign_interrupt_mode Found MSI capability
[ 1.797636] Allocate Port Service[0000:00:06.0:pcie00]
[ 1.797636] PCI: Setting latency timer of device 0000:00:07.0 to 64
[ 1.797636] assign_interrupt_mode Found MSI capability
[ 1.797636] Allocate Port Service[0000:00:07.0:pcie00]
[ 1.801636] hpet_resources: 0xfed00000 is busy
[ 1.801674] Linux agpgart interface v0.103
[ 1.801674] Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
[ 1.801674] pnp: the driver 'serial' has been registered
[ 1.805637] brd: module loaded
[ 1.805637] input: Macintosh mouse button emulation as /class/input/input0
[ 1.805637] pnp: the driver 'i8042 kbd' has been registered
[ 1.805637] i8042 kbd 00:06: driver attached
[ 1.805637] pnp: the driver 'i8042 aux' has been registered
[ 1.805637] i8042 aux 00:07: driver attached
[ 1.805637] PNP: PS/2 Controller [PNP0303:KBC0,PNP0f13:MSE0] at 0x60,0x64 irq 1,12
[ 1.875320] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 1.875375] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 1.889876] mice: PS/2 mouse device common for all mice
[ 1.889876] pnp: the driver 'rtc_cmos' has been registered
[ 1.889876] rtc_cmos 00:04: rtc core: registered rtc_cmos as rtc0
[ 1.889876] rtc0: alarms up to one month
[ 1.889876] rtc_cmos 00:04: driver attached
[ 1.889876] cpuidle: using governor ladder
[ 1.889876] cpuidle: using governor menu
[ 1.889876] No iBFT detected.
[ 1.889876] TCP cubic registered
[ 1.889876] NET: Registered protocol family 17
[ 1.889876] registered taskstats version 1
[ 1.889876] rtc_cmos 00:04: setting system clock to 2010-07-06 22:05:32 UTC (1278453932)
[ 1.889876] Freeing unused kernel memory: 392k freed
[ 1.938432] input: AT Translated Set 2 keyboard as /class/input/input1
[ 1.987995] ACPI: ACPI0007:00 is registered as cooling_device0
[ 1.987995] ACPI: ACPI0007:01 is registered as cooling_device1
[ 2.371176] sdhci: Secure Digital Host Controller Interface driver
[ 2.371176] sdhci: Copyright(c) Pierre Ossman
[ 2.371176] sdhci: SDHCI controller found at 0000:08:00.2 [197b:2381] (rev 0)
[ 2.371176] ACPI: PCI Interrupt 0000:08:00.2[A] -> GSI 17 (level, low) -> IRQ 17
[ 2.371176] PCI: Setting latency timer of device 0000:08:00.2 to 64
[ 2.371176] mmc0: SDHCI at 0xf0301800 irq 17 DMA
[ 2.386453] r8169 Gigabit Ethernet driver 2.2LK-NAPI loaded
[ 2.386453] ACPI: PCI Interrupt 0000:14:00.0[A] -> GSI 19 (level, low) -> IRQ 19
[ 2.386453] PCI: Setting latency timer of device 0000:14:00.0 to 64
[ 2.386453] eth0: RTL8102e at 0xffffc2000063a000, 00:26:22:33:89:af, XID 24c00000 IRQ 1274
[ 2.414266] No dock devices found.
[ 2.414455] ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver
[ 2.414455] ACPI: PCI Interrupt 0000:00:12.0[A] -> GSI 16 (level, low) -> IRQ 16
[ 2.414455] ohci_hcd 0000:00:12.0: OHCI Host Controller
[ 2.414455] ohci_hcd 0000:00:12.0: new USB bus registered, assigned bus number 1
[ 2.414455] ohci_hcd 0000:00:12.0: irq 16, io mem 0xf0404000
[ 2.421817] SCSI subsystem initialized
[ 2.436999] libata version 3.00 loaded.
[ 2.471386] usb usb1: configuration #1 chosen from 1 choice
[ 2.471507] hub 1-0:1.0: USB hub found
[ 2.471567] hub 1-0:1.0: 3 ports detected
[ 2.578448] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.578510] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.578565] usb usb1: Product: OHCI Host Controller
[ 2.578615] usb usb1: Manufacturer: Linux 2.6.26-2-amd64 ohci_hcd
[ 2.578666] usb usb1: SerialNumber: 0000:00:12.0
[ 2.579298] ACPI: PCI Interrupt 0000:00:12.1[A] -> GSI 16 (level, low) -> IRQ 16
[ 2.579298] ohci_hcd 0000:00:12.1: OHCI Host Controller
[ 2.579298] ohci_hcd 0000:00:12.1: new USB bus registered, assigned bus number 2
[ 2.579298] ohci_hcd 0000:00:12.1: irq 16, io mem 0xf0405000
[ 2.637238] usb usb2: configuration #1 chosen from 1 choice
[ 2.637321] hub 2-0:1.0: USB hub found
[ 2.637380] hub 2-0:1.0: 3 ports detected
[ 2.744412] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.744465] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.744519] usb usb2: Product: OHCI Host Controller
[ 2.744569] usb usb2: Manufacturer: Linux 2.6.26-2-amd64 ohci_hcd
[ 2.744620] usb usb2: SerialNumber: 0000:00:12.1
[ 2.746992] ACPI: PCI Interrupt 0000:00:13.0[A] -> GSI 18 (level, low) -> IRQ 18
[ 2.746992] ohci_hcd 0000:00:13.0: OHCI Host Controller
[ 2.746992] ohci_hcd 0000:00:13.0: new USB bus registered, assigned bus number 3
[ 2.746992] ohci_hcd 0000:00:13.0: irq 18, io mem 0xf0406000
[ 2.839002] usb usb3: configuration #1 chosen from 1 choice
[ 2.839082] hub 3-0:1.0: USB hub found
[ 2.839140] hub 3-0:1.0: 3 ports detected
[ 2.959075] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.959128] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.959182] usb usb3: Product: OHCI Host Controller
[ 2.959232] usb usb3: Manufacturer: Linux 2.6.26-2-amd64 ohci_hcd
[ 2.959283] usb usb3: SerialNumber: 0000:00:13.0
[ 2.961241] ACPI: PCI Interrupt 0000:00:13.1[A] -> GSI 18 (level, low) -> IRQ 18
[ 2.964701] ohci_hcd 0000:00:13.1: OHCI Host Controller
[ 2.964799] ohci_hcd 0000:00:13.1: new USB bus registered, assigned bus number 4
[ 2.964866] ohci_hcd 0000:00:13.1: irq 18, io mem 0xf0407000
[ 3.046506] usb usb4: configuration #1 chosen from 1 choice
[ 3.046583] hub 4-0:1.0: USB hub found
[ 3.046642] hub 4-0:1.0: 3 ports detected
[ 3.148189] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001
[ 3.148242] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 3.148296] usb usb4: Product: OHCI Host Controller
[ 3.148346] usb usb4: Manufacturer: Linux 2.6.26-2-amd64 ohci_hcd
[ 3.148397] usb usb4: SerialNumber: 0000:00:13.1
[ 3.149561] ahci 0000:00:11.0: version 3.0
[ 3.149561] ACPI: PCI Interrupt 0000:00:11.0[A] -> GSI 22 (level, low) -> IRQ 22
[ 3.417511] usb 4-1: new full speed USB device using ohci_hcd and address 2
[ 3.581930] usb 4-1: configuration #1 chosen from 1 choice
[ 3.592128] usb 4-1: New USB device found, idVendor=04f2, idProduct=b130
[ 3.592217] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3.592269] usb 4-1: Product: USB2.0 UVC WebCam
[ 3.592320] usb 4-1: Manufacturer: Chicony
[ 3.592369] usb 4-1: SerialNumber: CNA8155-000001
[ 4.473125] ahci 0000:00:11.0: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0xf impl SATA mode
[ 4.473182] ahci 0000:00:11.0: flags: 64bit ncq sntf ilck led clo pmp pio slum part
[ 4.477076] scsi0 : ahci
[ 4.477076] scsi1 : ahci
[ 4.477983] scsi2 : ahci
[ 4.477983] scsi3 : ahci
[ 4.477983] ata1: SATA max UDMA/133 abar m1024@0xf0408000 port 0xf0408100 irq 22
[ 4.477983] ata2: SATA max UDMA/133 abar m1024@0xf0408000 port 0xf0408180 irq 22
[ 4.477983] ata3: SATA max UDMA/133 abar m1024@0xf0408000 port 0xf0408200 irq 22
[ 4.477983] ata4: SATA max UDMA/133 abar m1024@0xf0408000 port 0xf0408280 irq 22
[ 4.850984] ata1: SATA link down (SStatus 0 SControl 300)
[ 5.334415] ata2: softreset failed (device not ready)
[ 5.334468] ata2: failed due to HW bug, retry pmp=0
[ 6.076659] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 6.076659] ata2.00: ATA-8: FUJITSU MJA2500BH G2, 00400018, max UDMA/100
[ 6.076659] ata2.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 31/32)
[ 6.076659] ata2.00: configured for UDMA/100
[ 6.396716] ata3: SATA link down (SStatus 0 SControl 300)
[ 6.883477] ata4: softreset failed (device not ready)
[ 6.883528] ata4: failed due to HW bug, retry pmp=0
[ 7.047005] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 7.046984] ata4.00: ATAPI: PIONEER DVD-RW DVRTD09A, 1.50, max UDMA/100, ATAPI AN
[ 7.990949] ata4.00: configured for UDMA/100
[ 7.991141] scsi 1:0:0:0: Direct-Access ATA FUJITSU MJA2500B 0040 PQ: 0 ANSI: 5
[ 8.022941] scsi 3:0:0:0: CD-ROM PIONEER DVD-RW DVRTD09A 1.50 PQ: 0 ANSI: 5
[ 8.022941] ACPI: PCI Interrupt 0000:00:12.2[B] -> GSI 17 (level, low) -> IRQ 17
[ 8.022941] ehci_hcd 0000:00:12.2: EHCI Host Controller
[ 8.022941] ehci_hcd 0000:00:12.2: new USB bus registered, assigned bus number 5
[ 8.022941] ehci_hcd 0000:00:12.2: debug port 1
[ 8.022941] ehci_hcd 0000:00:12.2: irq 17, io mem 0xf0408400
[ 8.046536] ehci_hcd 0000:00:12.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
[ 8.046685] usb usb5: configuration #1 chosen from 1 choice
[ 8.046767] hub 5-0:1.0: USB hub found
[ 8.046823] hub 5-0:1.0: 6 ports detected
[ 8.150872] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002
[ 8.150925] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 8.150980] usb usb5: Product: EHCI Host Controller
[ 8.151030] usb usb5: Manufacturer: Linux 2.6.26-2-amd64 ehci_hcd
[ 8.151081] usb usb5: SerialNumber: 0000:00:12.2
[ 8.154781] ACPI: PCI Interrupt 0000:00:13.2[B] -> GSI 19 (level, low) -> IRQ 19
[ 8.154781] ehci_hcd 0000:00:13.2: EHCI Host Controller
[ 8.154781] ehci_hcd 0000:00:13.2: new USB bus registered, assigned bus number 6
[ 8.154781] ehci_hcd 0000:00:13.2: debug port 1
[ 8.154781] ehci_hcd 0000:00:13.2: irq 19, io mem 0xf0408800
[ 8.194975] usb 4-1: USB disconnect, address 2
[ 8.202775] ehci_hcd 0000:00:13.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
[ 8.202890] usb usb6: configuration #1 chosen from 1 choice
[ 8.202966] hub 6-0:1.0: USB hub found
[ 8.203021] hub 6-0:1.0: 6 ports detected
[ 8.306869] usb usb6: New USB device found, idVendor=1d6b, idProduct=0002
[ 8.306957] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 8.307011] usb usb6: Product: EHCI Host Controller
[ 8.307062] usb usb6: Manufacturer: Linux 2.6.26-2-amd64 ehci_hcd
[ 8.307113] usb usb6: SerialNumber: 0000:00:13.2
[ 8.318763] Uniform Multi-Platform E-IDE driver
[ 8.318763] ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
[ 8.319663] ATIIXP: IDE controller (0x1002:0x439c rev 0x00) at PCI slot 0000:00:14.1
[ 8.319773] ACPI: PCI Interrupt 0000:00:14.1[A] -> GSI 16 (level, low) -> IRQ 16
[ 8.319880] ATIIXP: not 100% native mode: will probe irqs later
[ 8.319941] ide0: BM-DMA at 0x8410-0x8417
[ 8.319999] ide1: BM-DMA at 0x8418-0x841f
[ 8.320053] Probing IDE interface ide0...
[ 8.353887] Driver 'sd' needs updating - please use bus_type methods
[ 8.354131] sd 1:0:0:0: [sda] 976773168 512-byte hardware sectors (500108 MB)
[ 8.354204] sd 1:0:0:0: [sda] Write Protect is off
[ 8.354255] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 8.354292] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 8.354461] sd 1:0:0:0: [sda] 976773168 512-byte hardware sectors (500108 MB)
[ 8.354530] sd 1:0:0:0: [sda] Write Protect is off
[ 8.354581] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 8.355364] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 8.355364] sda:<4>Driver 'sr' needs updating - please use bus_type methods
[ 8.429575] sda1 sda2 sda3 sda4 < sda5 >
[ 8.459299] sd 1:0:0:0: [sda] Attached SCSI disk
[ 8.574044] usb 6-4: new high speed USB device using ehci_hcd and address 2
[ 8.576728] sr0: scsi3-mmc drive: 8x/8x writer dvd-ram cd/rw xa/form2 cdda tray
[ 8.576786] Uniform CD-ROM driver Revision: 3.20
[ 8.576962] sr 3:0:0:0: Attached scsi CD-ROM sr0
[ 8.588953] sd 1:0:0:0: Attached scsi generic sg0 type 0
[ 8.588953] sr 3:0:0:0: Attached scsi generic sg1 type 5
[ 8.728807] usb 6-4: configuration #1 chosen from 1 choice
[ 8.730492] usb 6-4: New USB device found, idVendor=04f2, idProduct=b130
[ 8.730492] usb 6-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 8.730492] usb 6-4: Product: USB2.0 UVC WebCam
[ 8.730492] usb 6-4: Manufacturer: Chicony
[ 8.730492] usb 6-4: SerialNumber: CNA8155-000001
[ 8.911543] Probing IDE interface ide1...
[ 9.487764] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
[ 9.488172] ide1 at 0x170-0x177,0x376 on irq 15
[ 9.581861] PM: Starting manual resume from disk
[ 9.599309] EXT3-fs: INFO: recovery required on readonly filesystem.
[ 9.599402] EXT3-fs: write access will be enabled during recovery.
[ 11.171089] kjournald starting. Commit interval 5 seconds
[ 11.267069] EXT3-fs: sda3: orphan cleanup on readonly fs
[ 11.267069] ext3_orphan_cleanup: deleting unreferenced inode 3926552
[ 11.267069] ext3_orphan_cleanup: deleting unreferenced inode 3926545
[ 11.267069] ext3_orphan_cleanup: deleting unreferenced inode 1359886
[ 11.267069] EXT3-fs: sda3: 3 orphan inodes deleted
[ 11.267069] EXT3-fs: recovery complete.
[ 11.267069] EXT3-fs: mounted filesystem with ordered data mode.
[ 13.577993] udevd version 125 started
[ 14.303366] input: Power Button (FF) as /class/input/input2
[ 14.358710] ACPI: Power Button (FF) [PWRF]
[ 14.358871] input: Power Button (CM) as /class/input/input3
[ 14.422855] ACPI: Power Button (CM) [PWRB]
[ 14.423055] input: Lid Switch as /class/input/input4
[ 14.452494] ACPI: Lid Switch [LID]
[ 14.617131] ACPI: PCI Interrupt 0000:00:14.2[A] -> GSI 16 (level, low) -> IRQ 16
[ 14.657537] ACPI: AC Adapter [ACAD] (on-line)
[ 14.696507] ACPI: PCI Interrupt 0000:02:00.1[B] -> GSI 19 (level, low) -> IRQ 19
[ 14.696671] PCI: Setting latency timer of device 0000:02:00.1 to 64
[ 14.704358] ACPI: device:04 is registered as cooling_device2
[ 14.704758] input: Video Bus as /class/input/input5
[ 14.752307] ACPI: Video Device [VGA] (multi-head: yes rom: no post: no)
[ 14.752829] proc_dir_entry 'VGA' already registered
[ 14.752903] Pid: 1577, comm: modprobe Not tainted 2.6.26-2-amd64 #1
[ 14.752954]
[ 14.752954] Call Trace:
[ 14.753055] [] idr_get_new+0xb/0x28
[ 14.753114] [] proc_register+0xcb/0x14b
[ 14.753167] [] proc_mkdir_mode+0x3c/0x51
[ 14.753223] [] :video:acpi_video_bus_add+0x1dc/0xcd6
[ 14.753277] [] sysfs_find_dirent+0x1b/0x2f
[ 14.753334] [] acpi_device_probe+0x43/0x90
[ 14.753387] [] driver_probe_device+0xd0/0x14d
[ 14.753439] [] __driver_attach+0x46/0x6d
[ 14.753491] [] __driver_attach+0x0/0x6d
[ 14.756894] [] bus_for_each_dev+0x44/0x6f
[ 14.756947] [] bus_add_driver+0xb4/0x203
[ 14.757001] [] driver_register+0x8d/0x101
[ 14.757055] [] :video:acpi_video_init+0x3c/0x5f
[ 14.757109] [] sys_init_module+0x191b/0x1ab1
[ 14.757165] [] acpi_bus_register_driver+0x0/0x3c
[ 14.757223] [] system_call_after_swapgs+0x8a/0x8f
[ 14.757277]
[ 14.804360] ACPI: Battery Slot [BAT1] (battery absent)
[ 14.816350] ACPI: device:40 is registered as cooling_device3
[ 14.816747] input: Video Bus as /class/input/input6
[ 14.880350] ACPI: Video Device [VGA] (multi-head: yes rom: no post: no)
[ 14.989906] ACPI: PCI Interrupt 0000:08:00.3[A] -> GSI 17 (level, low) -> IRQ 17
[ 14.989906] PCI: Setting latency timer of device 0000:08:00.3 to 64
[ 15.248699] Linux video capture interface: v2.00
[ 15.281607] piix4_smbus 0000:00:14.0: Found 0000:00:14.0 device
[ 15.285655] input: PC Speaker as /class/input/input7
[ 15.329677] uvcvideo: Found UVC 1.00 device USB2.0 UVC WebCam (04f2:b130)
[ 15.353885] input: USB2.0 UVC WebCam as /class/input/input8
[ 15.377946] usbcore: registered new interface driver uvcvideo
[ 15.378004] USB Video Class driver (v0.1.0)
[ 16.500141] Adding 9896000k swap on /dev/sda5. Priority:-1 extents:1 across:9896000k
[ 16.782106] Synaptics Touchpad, model: 1, fw: 7.2, id: 0x1c0b1, caps: 0xd04731/0xa40000
[ 16.974915] input: SynPS/2 Synaptics TouchPad as /class/input/input9
[ 16.980706] EXT3 FS on sda3, internal journal
[ 17.613662] loop: module loaded
[ 18.644692] NET: Registered protocol family 10
[ 18.644692] lo: Disabled Privacy Extensions
[ 28.451627] pnp: the driver 'parport_pc' has been registered
[ 28.454805] lp: driver loaded but no devices found
[ 28.489619] ppdev: user-space parallel port driver
[ 29.143128] RPC: Registered udp transport module.
[ 29.143128] RPC: Registered tcp transport module.
[ 29.200328] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[ 29.239731] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[ 29.258331] NFSD: starting 90-second grace period
[ 32.471666] r8169: eth0: link up
[ 32.471666] r8169: eth0: link up
[ 34.936173] NET: Registered protocol family 5
[ 49.453475] eth0: no IPv6 routers present
[ 55.727998] CPU0 attaching NULL sched-domain.
[ 55.727998] CPU1 attaching NULL sched-domain.
[ 55.745761] CPU0 attaching sched-domain:
[ 55.745761] domain 0: span 0-1
[ 55.745761] groups: 0 1
[ 55.745761] domain 1: span 0-1
[ 55.745761] groups: 0-1
[ 55.745761] CPU1 attaching sched-domain:
[ 55.745761] domain 0: span 0-1
[ 55.745761] groups: 1 0
[ 55.745761] domain 1: span 0-1
[ 55.745761] groups: 0-1
[ 1934.738260] r8169: eth0: link up
[ 1935.860599] PM: Syncing filesystems ... done.
[ 1935.860755] Freezing user space processes ... (elapsed 0.00 seconds) done.
[ 1935.861804] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
[ 1935.862087] PM: Shrinking memory... done (45656 pages freed)
[ 1938.530988] PM: Freed 182624 kbytes in 2.51 seconds (72.75 MB/s)
[ 1938.531039] Suspending console(s)
[ 1938.736789] sd 1:0:0:0: [sda] Synchronizing SCSI cache
[ 1938.799079] ACPI handle has no context!
[ 1938.799079] ACPI handle has no context!
[ 1938.799079] ACPI handle has no context!
[ 1938.812942] ACPI handle has no context!
[ 1938.812957] ACPI: PCI interrupt for device 0000:08:00.3 disabled
[ 1938.812963] ACPI handle has no context!
[ 1938.829034] ACPI handle has no context!
[ 1938.829050] ACPI: PCI interrupt for device 0000:08:00.2 disabled
[ 1938.829056] ACPI handle has no context!
[ 1938.860943] ACPI: PCI interrupt for device 0000:02:00.1 disabled
[ 1938.860983] ACPI handle has no context!
[ 1938.894060] ACPI: PCI interrupt for device 0000:00:14.2 disabled
[ 1938.909006] ACPI: PCI interrupt for device 0000:00:13.2 disabled
[ 1938.909042] ACPI: PCI interrupt for device 0000:00:13.1 disabled
[ 1938.909076] ACPI: PCI interrupt for device 0000:00:13.0 disabled
[ 1938.909127] ACPI: PCI interrupt for device 0000:00:12.2 disabled
[ 1938.909161] ACPI: PCI interrupt for device 0000:00:12.1 disabled
[ 1938.909197] ACPI: PCI interrupt for device 0000:00:12.0 disabled
[ 1938.976963] ACPI: PCI interrupt for device 0000:00:11.0 disabled
[ 1938.976963] ACPI: Preparing to enter system sleep state S4
[ 1938.985222] Disabling non-boot CPUs ...
[ 1938.985235] CPU0 attaching NULL sched-domain.
[ 1938.985238] CPU1 attaching NULL sched-domain.
[ 1939.102802] CPU 1 is now offline
[ 1939.102805] SMP alternatives: switching to UP code
[ 1939.112758] CPU0 attaching sched-domain:
[ 1939.112758] domain 0: span 0
[ 1939.112758] groups: 0
[ 1939.112758] CPU1 is down
[ 1939.112758] PM: Creating hibernation image:
[ 1939.112758] PM: Need to copy 125815 pages
[ 1939.112758] Enabling non-boot CPUs ...
[ 1939.112758] CPU0 attaching NULL sched-domain.
[ 1939.121162] SMP alternatives: switching to SMP code
[ 1939.131778] Booting processor 1/1 ip 6000
[ 1939.140912] Initializing CPU#1
[ 1939.140912] Calibrating delay using timer specific routine.. 4589.34 BogoMIPS (lpj=9178691)
[ 1939.140912] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
[ 1939.140912] CPU: L2 Cache: 1024K (64 bytes/line)
[ 1939.140912] CPU 1/1 -> Node 0
[ 1939.140912] CPU: Physical Processor ID: 0
[ 1939.140912] CPU: Processor Core ID: 1
[ 1939.220973] CPU1: AMD Turion(tm) X2 Ultra Dual-Core Mobile ZM-84 stepping 01
[ 1939.221100] CPU0 attaching sched-domain:
[ 1939.221103] domain 0: span 0-1
[ 1939.221104] groups: 0 1
[ 1939.221107] domain 1: span 0-1
[ 1939.221108] groups: 0-1
[ 1939.221111] CPU1 attaching sched-domain:
[ 1939.221113] domain 0: span 0-1
[ 1939.221115] groups: 1 0
[ 1939.221117] domain 1: span 0-1
[ 1939.221119] groups: 0-1
[ 1939.140912] CPU1 is up
[ 1939.256165] Switched to high resolution mode on CPU 1
[ 1939.346532] ACPI: EC: non-query interrupt received, switching to interrupt mode
[ 1939.861098] ACPI: EC: missing confirmations, switch off interrupt mode.
[ 1939.929201] PCI: Setting latency timer of device 0000:00:02.0 to 64
[ 1939.929242] PCI: Setting latency timer of device 0000:00:04.0 to 64
[ 1939.929282] PCI: Setting latency timer of device 0000:00:05.0 to 64
[ 1939.929320] PCI: Setting latency timer of device 0000:00:06.0 to 64
[ 1939.929360] PCI: Setting latency timer of device 0000:00:07.0 to 64
[ 1939.929432] PM: Writing back config space on device 0000:00:11.0 at offset 1 (was 2300003, writing 2300007)
[ 1939.929456] ACPI: PCI Interrupt 0000:00:11.0[A] -> GSI 22 (level, low) -> IRQ 22
[ 1939.929492] ACPI: PCI Interrupt 0000:00:12.0[A] -> GSI 16 (level, low) -> IRQ 16
[ 1939.989321] usb usb1: root hub lost power or was reset
[ 1939.989357] ACPI: PCI Interrupt 0000:00:12.1[A] -> GSI 16 (level, low) -> IRQ 16
[ 1940.049065] usb usb2: root hub lost power or was reset
[ 1940.049078] ACPI: PCI Interrupt 0000:00:12.2[B] -> GSI 17 (level, low) -> IRQ 17
[ 1940.049124] usb usb5: root hub lost power or was reset
[ 1940.049141] ehci_hcd 0000:00:12.2: debug port 1
[ 1940.049154] ACPI: PCI Interrupt 0000:00:13.0[A] -> GSI 18 (level, low) -> IRQ 18
[ 1940.109320] usb usb3: root hub lost power or was reset
[ 1940.109358] ACPI: PCI Interrupt 0000:00:13.1[A] -> GSI 18 (level, low) -> IRQ 18
[ 1940.169320] usb usb4: root hub lost power or was reset
[ 1940.169361] ACPI: PCI Interrupt 0000:00:13.2[B] -> GSI 19 (level, low) -> IRQ 19
[ 1940.169405] usb usb6: root hub lost power or was reset
[ 1940.169421] ehci_hcd 0000:00:13.2: debug port 1
[ 1940.169511] ACPI: PCI Interrupt 0000:00:14.1[A] -> GSI 16 (level, low) -> IRQ 16
[ 1940.185073] PM: Writing back config space on device 0000:00:14.2 at offset f (was 10b, writing b)
[ 1940.185097] PM: Writing back config space on device 0000:00:14.2 at offset 1 (was 4100006, writing 4100002)
[ 1940.185114] ACPI: PCI Interrupt 0000:00:14.2[A] -> GSI 16 (level, low) -> IRQ 16
[ 1940.201225] PM: Writing back config space on device 0000:02:00.1 at offset 1 (was 100007, writing 100003)
[ 1940.201242] ACPI: PCI Interrupt 0000:02:00.1[B] -> GSI 19 (level, low) -> IRQ 19
[ 1940.201247] PCI: Setting latency timer of device 0000:02:00.1 to 64
[ 1940.217185] PM: Writing back config space on device 0000:08:00.2 at offset 1 (was 100003, writing 100007)
[ 1940.217210] ACPI: PCI Interrupt 0000:08:00.2[A] -> GSI 17 (level, low) -> IRQ 17
[ 1940.217216] PCI: Setting latency timer of device 0000:08:00.2 to 64
[ 1940.233155] ACPI: PCI Interrupt 0000:08:00.3[A] -> GSI 17 (level, low) -> IRQ 17
[ 1940.233161] PCI: Setting latency timer of device 0000:08:00.3 to 64
[ 1940.248005] ata3: SATA link down (SStatus 0 SControl 300)
[ 1940.248097] ata1: SATA link down (SStatus 0 SControl 300)
[ 1940.267687] r8169: eth0: link up
[ 1940.415478] ata4: softreset failed (device not ready)
[ 1940.415481] ata4: failed due to HW bug, retry pmp=0
[ 1940.415500] ata2: softreset failed (device not ready)
[ 1940.415503] ata2: failed due to HW bug, retry pmp=0
[ 1940.578023] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 1940.578064] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 1940.581493] ata2.00: configured for UDMA/100
[ 1940.581548] sd 1:0:0:0: [sda] 976773168 512-byte hardware sectors (500108 MB)
[ 1940.581568] sd 1:0:0:0: [sda] Write Protect is off
[ 1940.581570] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 1940.581601] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1940.591063] ata4.00: configured for UDMA/100
[ 1942.295256] sd 1:0:0:0: [sda] Starting disk
[ 1942.679215] Restarting tasks ... done.
[ 1942.809873] usb 6-4: USB disconnect, address 2
[ 1942.940645] usb 6-4: new high speed USB device using ehci_hcd and address 3
[ 1943.117246] usb 6-4: configuration #1 chosen from 1 choice
[ 1943.117665] uvcvideo: Found UVC 1.00 device USB2.0 UVC WebCam (04f2:b130)
[ 1943.135064] input: USB2.0 UVC WebCam as /class/input/input10
[ 1943.160192] usb 6-4: New USB device found, idVendor=04f2, idProduct=b130
[ 1943.160252] usb 6-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1943.162957] usb 6-4: Product: USB2.0 UVC WebCam
[ 1943.163007] usb 6-4: Manufacturer: Chicony
[ 1943.163056] usb 6-4: SerialNumber: CNA8155-000001
[ 1945.501060] eth0: no IPv6 routers present
[ 1946.066543] r8169: eth0: link up
[ 1965.974193] eth0: no IPv6 routers present
Cosme2:/home/cosme#

Lo pongo para que lo veas, si molesta luego lo edito y borro todo lo que sobre...

Caliban, ¿Meto el firmware rt8192s aunque la mía sea la 8172?

Gracias por contestar tan rápido.

Saludos...

Por lo que veo, tu wifi está reconocida sin problemas, puesto que aparece en el lspci listada.

Sin saber que version de debian has instalado y con que kernel te encuentras, no sabremos por donde tirar.

abre una consola y corre el comando:

Esto nos dirá la versión del kernel que estás usando.
En las versiones 2.6.30 y 2.6.31 esa tarjeta wifi funciona, ya que tiene los drivers includidos (si san google y la wiki de debian no me engaña). Pero tiene un "problemilla", necesitas instalar el paquete de firmwares de realtek para que el sistema pueda "saber" como funciona.

En una consola, teclea

o

y fíjate en los nombres de los paquetes que te salen, a ver si hay alguno que se llame "firmware realtek":

Esto que te pongo es la descripcion del paqute en Debian Sid con el kernel 2.6.32-5-686. Es posible que no esté, o no tenga los mismos firmwares, en la version que uses tu, con lo que tendrás que buscar un driver adecuado (con el firmware) en la página de realtek o buscar en la wiki de debian / esdebian información sobre backports del kernel y de sus modulos.

Si ese paquete se encontrara en los repositorios de tu version, con un simple

y luego descargando y volviendo a cargar el modulo correspondiente o reiniciando el sistema, tu wifi debería funcionar.

He intentado hacer eso que me has escrito esta mañana deprisa y corriendo.
Mi versión es:
Linux 2.6.26-2-amd64 #1 SMP Tue JAN 12 22:12:20 UTC 2010 x86_64 GNU/Linux.
Es la última versión que hay en la web de debian, me lo descargué la semana pasada. Si no me equivoco es la stable, cuando trastee un poco y sepa defenderme algo mejor, intentaré pasar a testing.

Con "aptitude search realtek" o "aptitude search firmware" la consola no hace nada especial, meto los comandos, doy a intro y como si nada. De todas maneras ya digo que lo he hecho un poco deprisa y corriendo, que no llegaba al curro. Cuando salga, esta tarde ya, lo vuelvo a intentar...

Muchas gracias.

Hola sloisis,

Bienvenido al foro. Te comento que por suerte o por desgracia, tengo cierta experiencia con la pareja Debian-Toshiba, ya que tengo dos portátiles Toshiba con los que he tenido que pegarme para poder dejar Debian funcionando.

Uno de ellos es un Toshiba Satellite U500-1DV, y tiene concretamente la tarjeta RTL8192SE, que según tengo entendido, necesita el mismo driver que la tuya. El problema de Lenny es que el kernel es muy antiguo, por tanto él por sí solo no te la va a "reconocer". Aún así, en testing, cuyo kernel es mucho más nuevo, tampoco he podido hacer funcionar el wifi automágicamente, y he tenido que recurrir a un driver externo.

Yo en tu lugar haría lo que ha comentado el compañero Panko, es decir, instalar el paquete firmware-realtek si está en Lenny. En caso contrario, seguiría el procedimiento descrito aquí, a mí me funcionó a la primera.

Una vez completado, debería aparecerte el dispositivo wlan0 cuando ejecutases el comando ifconfig -a. Si es así, hemos tenido éxito. En caso contrario, revisa bien el procedimiento seguido y procura hacerlo todo exactamente igual a lo descrito en el artículo, te lo digo por experiencia ;-)

Cuando tengas éxito, es posible que si vienes de Windows eches de menos un gestor de redes inalámbricas similar. Para tal efecto te recomiendo instalar Wicd.

Nos cuentas.

Saludos.

Vale, en cuanto llegue a casa lo intento (aunque igual hay que ir de fiesta con los futboleros y no llego a casa hasta mañana...).
¿Me recomiendas intentar primero el pasar a testing a ver si se soluciona? Tenía pensado pasar en cuanto supiese manejarme un poco, pero vamos, que el orden de los factores...

Otro de los problemas que estoy teniendo es saber precisamente si he tenido éxito o no... No termino de saber si debian me ha detectado todo el hardware o si tengo que instalar yo algo más, pero bueno, eso para más adelante... jeje. Gracias por la recomendación, seguro que echo de menos ese gestor...

En cuanto pruebe todo os comento.

¡Hasta luego!

Si no tenes inconveniente y ya que estás al inicio de todo ,no es mala idea que directamente instales squeeze.
No creo que encuentres inconvenientes mayores ,vas a tener un poco más actualizado todo ,incluido el kernel (Además de que no va a pasar mucho tiempo para que squeeze sea el próximo estable)Lo cual te va a facilitar la vida a la hora de configurar tu wifi.
De todos modos,anda paso a paso solucionando una cosa por vez ,he intentando una cosa por vez ,( en el caso de la wifi ,ya tenes suficientes herramientas como para hacer comprobaciones ,y un enlace en primera instancia para ver si cargando el firmware realtek desde debian te funciona la wifi ,en el caso de no hacerlo lo intentas de una forma mas indirecta como te han aconsejado)