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Thread: Señal wifi muy debil

  1. #1
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    Aug 2009
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    Señal wifi muy debil

    Hola buenas, tengo instalada una tarjeta de red y la señal es muy baja cuando he instalado los driver sale lo siguiente:

    Check kernel header files (not found) [ failed ]
    Kernel header not found. Please install the linux header files
    development package or crate a symbolic link from the
    /usr/src/KERNEL_VERSION directory to linux


    he intentado seguir algunos post para instalar los header y hacer el enlace simbolico ,pero no he conseguido nada , la tarjeta de red es:


    05:04.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 14)
    Subsystem: ASUSTeK Computer Inc. Device 811a
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 64 (5750ns min, 7750ns max), Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 19
    Region 0: Memory at ff9f4000 (32-bit, non-prefetchable) [size=16K]
    Region 1: I/O ports at b800 [size=256]
    Expansion ROM at 88000000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: skge
    Kernel modules: skge


    Alguien puede decirme como puedo instalarla , para recebir una buena señal , uso el wicd.

    Gracias

  2. #2
    Join Date
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    Re: Señal wifi muy debil

    Quote Originally Posted by akiestudio View Post
    05:04.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 14)
    Subsystem: ASUSTeK Computer Inc. Device 811a
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 64 (5750ns min, 7750ns max), Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 19
    Region 0: Memory at ff9f4000 (32-bit, non-prefetchable) [size=16K]
    Region 1: I/O ports at b800 [size=256]
    Expansion ROM at 88000000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: skge
    Kernel modules: skge
    Esta tarjeta de red es por cable (Gigabit), no es inalámbrica.

  3. #3
    Join Date
    May 2007
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    Xubuntu 12.04 Precise Pangolin

    Re: Señal wifi muy debil

    Quote Originally Posted by akiestudio View Post
    Hola buenas, tengo instalada una tarjeta de red y la señal es muy baja cuando he instalado los driver sale lo siguiente:

    Check kernel header files (not found) [ failed ]
    Kernel header not found. Please install the linux header files
    development package or crate a symbolic link from the
    /usr/src/KERNEL_VERSION directory to linux


    he intentado seguir algunos post para instalar los header y hacer el enlace simbolico ,pero no he conseguido nada

    Alguien puede decirme como puedo instalarla , para recebir una buena señal , uso el wicd.

    Gracias
    Podes instalar los headers para la version de kernel que estas usando con Synaptic. Esto siempre que efectivamente NO los tengas instalados y el error lo de el script de instalacion del driver de la placa inalambrica porque los busca en un lugar donde no estan.

    Contanos, por favor, como es el procedimiento que estas llevando a cabo con esa placa.

    Tambien seria muy conveniente contar con las salidas de los comandos "lspci" y "lshw" (sin las comillas) ejecutados en una consola/terminal.
    Guillermo Lisi
    ----------------
    Minds are like parachutes. They only function when they are open.

  4. #4
    Join Date
    Aug 2009
    Beans
    85

    Re: Señal wifi muy debil

    Ya he instalado todos los archivos de header de mi kernel ,pero cuando instalo sale lo siguiente:
    Code:
    Create tmp dir (/tmp/Sk98IiPXZGiJLFlnLnUhhDlgm)                      [   OK   ]
    Check user id (0)                                                    [   OK   ]
    Check kernel version (2.6.28-11-generic)                             [   OK   ]
    Check kernel symbol file (/proc/kallsyms)                            [   OK   ]
    Check kernel type (SMP)                                              [   OK   ]
    Check number of CPUs (2)                                             [   OK   ]
    Check architecture./install.sh: line 414: arch: orden no encontrada
     (found)                                                             [   OK   ]
    Set architecture (i386)                                              [   OK   ]
    Check compiler (/usr/bin/gcc)                                        [   OK   ]
    Check mcmodel flags (none)                                           [   OK   ]
    Check module support (/sbin/insmod)                                  [   OK   ]
    Check make (/usr/bin/make)                                           [   OK   ]
    Check archive file (sk98lin)                                         [   OK   ]
    Check kernel gcc version (4.3.3) (Kernel:4.3.3 == gcc:4.3.3)         [   OK   ]
    Check sk98lin driver availability (not loaded)                       [   OK   ]
    Check kernel header files (not found)                                [ failed ]
    Kernel header not found. Please install the linux header files 
    development package or crate a symbolic link from the 
    /usr/src/KERNEL_VERSION directory to linux
         Example: ln -s /usr/src/KERNEL_VERSION /usr/src/linux
    
    Installation of sk98lin driver module failed.
    Delete temp directories (done)
    lscpi:
    Code:
    fran@fran-desktop:~/Escritorio/Marvell_Lan$ lspci
    00:00.0 Host bridge: Intel Corporation 82P965/G965 Memory Controller Hub (rev 02)
    00:01.0 PCI bridge: Intel Corporation 82P965/G965 PCI Express Root Port (rev 02)
    00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02)
    00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02)
    00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02)
    00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02)
    00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02)
    00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 02)
    00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 02)
    00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02)
    00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02)
    00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02)
    00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02)
    00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev f2)
    00:1f.0 ISA bridge: Intel Corporation 82801HB/HR (ICH8/R) LPC Interface Controller (rev 02)
    00:1f.2 IDE interface: Intel Corporation 82801H (ICH8 Family) 4 port SATA IDE Controller (rev 02)
    00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02)
    00:1f.5 IDE interface: Intel Corporation 82801H (ICH8 Family) 2 port SATA IDE Controller (rev 02)
    01:00.0 VGA compatible controller: ATI Technologies Inc R580 [Radeon X1900]
    01:00.1 Display controller: ATI Technologies Inc R580 [Radeon X1900]
    02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit Ethernet Controller (rev 12)
    03:00.0 SATA controller: JMicron Technologies, Inc. JMicron 20360/20363 AHCI Controller (rev 02)
    03:00.1 IDE interface: JMicron Technologies, Inc. JMicron 20360/20363 AHCI Controller (rev 02)
    05:03.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
    05:04.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 14)
    lshw :

    Code:
     lshw
    WARNING: you should run this program as super-user.
    fran-desktop              
        description: Computer
        width: 32 bits
      *-core
           description: Motherboard
           physical id: 0
         *-memory
              description: System memory
              physical id: 0
              size: 2013MiB
         *-cpu
              product: Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz
              vendor: Intel Corp.
              physical id: 1
              bus info: cpu@0
              version: 6.15.6
              serial: 0000-06F6-0000-0000-0000-0000
              size: 2128MHz
              capacity: 2128MHz
              width: 64 bits
              capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx x86-64 constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow cpufreq
              configuration: id=0
            *-logicalcpu:0
                 description: Logical CPU
                 physical id: 0.1
                 width: 64 bits
                 capabilities: logical
            *-logicalcpu:1
                 description: Logical CPU
                 physical id: 0.2
                 width: 64 bits
                 capabilities: logical
         *-pci
              description: Host bridge
              product: 82P965/G965 Memory Controller Hub
              vendor: Intel Corporation
              physical id: 100
              bus info: pci@0000:00:00.0
              version: 02
              width: 32 bits
              clock: 33MHz
            *-pci:0
                 description: PCI bridge
                 product: 82P965/G965 PCI Express Root Port
                 vendor: Intel Corporation
                 physical id: 1
                 bus info: pci@0000:00:01.0
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci bus_master cap_list
                 configuration: driver=pcieport-driver
               *-display:0 UNCLAIMED
                    description: VGA compatible controller
                    product: R580 [Radeon X1900]
                    vendor: ATI Technologies Inc
                    physical id: 0
                    bus info: pci@0000:01:00.0
                    version: 00
                    width: 64 bits
                    clock: 33MHz
                    capabilities: bus_master cap_list
                    configuration: latency=0
               *-display:1 UNCLAIMED
                    description: Display controller
                    product: R580 [Radeon X1900]
                    vendor: ATI Technologies Inc
                    physical id: 0.1
                    bus info: pci@0000:01:00.1
                    version: 00
                    width: 64 bits
                    clock: 33MHz
                    capabilities: bus_master cap_list
                    configuration: latency=0
            *-usb:0
                 description: USB Controller
                 product: 82801H (ICH8 Family) USB UHCI Controller #4
                 vendor: Intel Corporation
                 physical id: 1a
                 bus info: pci@0000:00:1a.0
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: bus_master
                 configuration: driver=uhci_hcd latency=0 module=uhci_hcd
            *-usb:1
                 description: USB Controller
                 product: 82801H (ICH8 Family) USB UHCI Controller #5
                 vendor: Intel Corporation
                 physical id: 1a.1
                 bus info: pci@0000:00:1a.1
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: bus_master
                 configuration: driver=uhci_hcd latency=0 module=uhci_hcd
            *-usb:2
                 description: USB Controller
                 product: 82801H (ICH8 Family) USB2 EHCI Controller #2
                 vendor: Intel Corporation
                 physical id: 1a.7
                 bus info: pci@0000:00:1a.7
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: bus_master cap_list
                 configuration: driver=ehci_hcd latency=0 module=ehci_hcd
            *-multimedia
                 description: Audio device
                 product: 82801H (ICH8 Family) HD Audio Controller
                 vendor: Intel Corporation
                 physical id: 1b
                 bus info: pci@0000:00:1b.0
                 version: 02
                 width: 64 bits
                 clock: 33MHz
                 capabilities: bus_master cap_list
                 configuration: driver=HDA Intel latency=0 module=snd_hda_intel
            *-pci:1
                 description: PCI bridge
                 product: 82801H (ICH8 Family) PCI Express Port 1
                 vendor: Intel Corporation
                 physical id: 1c
                 bus info: pci@0000:00:1c.0
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci bus_master cap_list
                 configuration: driver=pcieport-driver
            *-pci:2
                 description: PCI bridge
                 product: 82801H (ICH8 Family) PCI Express Port 5
                 vendor: Intel Corporation
                 physical id: 1c.4
                 bus info: pci@0000:00:1c.4
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci bus_master cap_list
                 configuration: driver=pcieport-driver
               *-storage
                    description: SATA controller
                    product: JMicron 20360/20363 AHCI Controller
                    vendor: JMicron Technologies, Inc.
                    physical id: 0
                    bus info: pci@0000:03:00.0
                    version: 02
                    width: 32 bits
                    clock: 33MHz
                    capabilities: storage bus_master cap_list
                    configuration: driver=ahci latency=0 module=ahci
               *-ide
                    description: IDE interface
                    product: JMicron 20360/20363 AHCI Controller
                    vendor: JMicron Technologies, Inc.
                    physical id: 0.1
                    bus info: pci@0000:03:00.1
                    version: 02
                    width: 32 bits
                    clock: 33MHz
                    capabilities: ide bus_master cap_list
                    configuration: driver=pata_jmicron latency=0
            *-pci:3
                 description: PCI bridge
                 product: 82801H (ICH8 Family) PCI Express Port 6
                 vendor: Intel Corporation
                 physical id: 1c.5
                 bus info: pci@0000:00:1c.5
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci bus_master cap_list
                 configuration: driver=pcieport-driver
               *-network
                    description: Ethernet interface
                    product: 88E8056 PCI-E Gigabit Ethernet Controller
                    vendor: Marvell Technology Group Ltd.
                    physical id: 0
                    bus info: pci@0000:02:00.0
                    logical name: eth0
                    version: 12
                    serial: 00:18:f3:2a:9e:80
                    width: 64 bits
                    clock: 33MHz
                    capabilities: bus_master cap_list ethernet physical
                    configuration: broadcast=yes driver=sky2 driverversion=1.22 firmware=N/A latency=0 module=sky2 multicast=yes
            *-usb:3
                 description: USB Controller
                 product: 82801H (ICH8 Family) USB UHCI Controller #1
                 vendor: Intel Corporation
                 physical id: 1d
                 bus info: pci@0000:00:1d.0
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: bus_master
                 configuration: driver=uhci_hcd latency=0 module=uhci_hcd
            *-usb:4
                 description: USB Controller
                 product: 82801H (ICH8 Family) USB UHCI Controller #2
                 vendor: Intel Corporation
                 physical id: 1d.1
                 bus info: pci@0000:00:1d.1
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: bus_master
                 configuration: driver=uhci_hcd latency=0 module=uhci_hcd
            *-usb:5
                 description: USB Controller
                 product: 82801H (ICH8 Family) USB UHCI Controller #3
                 vendor: Intel Corporation
                 physical id: 1d.2
                 bus info: pci@0000:00:1d.2
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: bus_master
                 configuration: driver=uhci_hcd latency=0 module=uhci_hcd
            *-usb:6
                 description: USB Controller
                 product: 82801H (ICH8 Family) USB2 EHCI Controller #1
                 vendor: Intel Corporation
                 physical id: 1d.7
                 bus info: pci@0000:00:1d.7
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: bus_master cap_list
                 configuration: driver=ehci_hcd latency=0 module=ehci_hcd
            *-pci:4
                 description: PCI bridge
                 product: 82801 PCI Bridge
                 vendor: Intel Corporation
                 physical id: 1e
                 bus info: pci@0000:00:1e.0
                 version: f2
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci bus_master cap_list
               *-firewire
                    description: FireWire (IEEE 1394)
                    product: TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
                    vendor: Texas Instruments
                    physical id: 3
                    bus info: pci@0000:05:03.0
                    version: 00
                    width: 32 bits
                    clock: 33MHz
                    capabilities: bus_master cap_list
                    configuration: driver=ohci1394 latency=64 maxlatency=4 mingnt=2 module=ohci1394
               *-network DISABLED
                    description: Ethernet interface
                    product: 88E8001 Gigabit Ethernet Controller
                    vendor: Marvell Technology Group Ltd.
                    physical id: 4
                    bus info: pci@0000:05:04.0
                    logical name: eth1
                    version: 14
                    serial: 00:17:31:67:b3:a1
                    width: 32 bits
                    clock: 66MHz
                    capabilities: bus_master cap_list ethernet physical
                    configuration: broadcast=yes driver=skge driverversion=1.13 firmware=N/A latency=64 maxlatency=31 mingnt=23 module=skge multicast=yes
            *-isa
                 description: ISA bridge
                 product: 82801HB/HR (ICH8/R) LPC Interface Controller
                 vendor: Intel Corporation
                 physical id: 1f
                 bus info: pci@0000:00:1f.0
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: isa bus_master cap_list
                 configuration: latency=0
            *-ide:0
                 description: IDE interface
                 product: 82801H (ICH8 Family) 4 port SATA IDE Controller
                 vendor: Intel Corporation
                 physical id: 1f.2
                 bus info: pci@0000:00:1f.2
                 version: 02
                 width: 32 bits
                 clock: 66MHz
                 capabilities: ide bus_master cap_list
                 configuration: driver=ata_piix latency=0
            *-serial UNCLAIMED
                 description: SMBus
                 product: 82801H (ICH8 Family) SMBus Controller
                 vendor: Intel Corporation
                 physical id: 1f.3
                 bus info: pci@0000:00:1f.3
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 configuration: latency=0
            *-ide:1
                 description: IDE interface
                 product: 82801H (ICH8 Family) 2 port SATA IDE Controller
                 vendor: Intel Corporation
                 physical id: 1f.5
                 bus info: pci@0000:00:1f.5
                 version: 02
                 width: 32 bits
                 clock: 66MHz
                 capabilities: ide bus_master cap_list
                 configuration: driver=ata_piix latency=0
      *-network:0
           description: Wireless interface
           physical id: 1
           logical name: wlan0
           serial: 00:15:af:02:12:81
           capabilities: ethernet physical wireless
           configuration: broadcast=yes ip=192.168.0.95 multicast=yes wireless=IEEE 802.11bg
      *-network:1 DISABLED
           description: Ethernet interface
           physical id: 2
           logical name: pan0
           serial: 1a:d8:13:bd:cd:82
           capabilities: ethernet physical
           configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A multicast=yes
    Gracias por la ayuda, en windows la señal es bastante buena, pero aqui en ubuntu no tiene mas de una raya.

  5. #5
    Join Date
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    Re: Señal wifi muy debil

    Lo que hay que saber es el chipset del adaptador de red. Si es USB se puede obtener ejecutando el comando lsusb.

  6. #6
    Join Date
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    Re: Señal wifi muy debil

    Debe ser USB porque no aparece en la lista de dispositivos PCI (salvo que esa placa posee dos adaptadores de red Ethernet).
    Guillermo Lisi
    ----------------
    Minds are like parachutes. They only function when they are open.

  7. #7
    Join Date
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    Re: Señal wifi muy debil

    Me imagino que el 88E8001 es integrado, el 88E8056 en una placa PCI-E y la que tiene señal baja una USB. La señal baja es un problema conocido en algunos adaptadores inalámbricos.

  8. #8
    Join Date
    Aug 2009
    Beans
    85

    Re: Señal wifi muy debil

    He formateado de nuevo el pc, porque tuve problemas con mi tarjeta grafica y no arrancaba el ubuntu,asi que esta sin instalarle nada.
    Mi placa es una asus pb5-deluxe wifi , y haciendo lsubs. sale:
    Code:
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 006 Device 002: ID 046d:c517 Logitech, Inc. LX710 Cordless Desktop Laser
    Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 001 Device 002: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Hay alguna manera de aumentarle la señal, con mi tarjeta , en windows la señal es bastante buena y en ubuntu casi ni tiene.

    Saludos

  9. #9
    Join Date
    May 2007
    Location
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    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Señal wifi muy debil

    Por lo vengo leyendo sobre instalaciones que usan el chip RTL8187 tenes bastante suerte en que funcione, aunque sea con poca potencia. Me parece que los drivers que se estan usando les falta un poco mas de coccion para que esten a la altura de los demas (Atheros, Broadcom y chips anteriores de Realtek).
    Guillermo Lisi
    ----------------
    Minds are like parachutes. They only function when they are open.

  10. #10
    Join Date
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    Location
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    Re: Señal wifi muy debil

    Es un problema conocido del RTL8187. Probaste o estás usando Ubuntu 9.10 ?

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