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Thread: Realtek Wireless card

  1. #1
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    Realtek Wireless card

    Was just wondering if there is anyone else besides me having trouble with there realtek wireless cards in ubuntu. My wifi becomes unstable and eventual I cannnot download/surf the web.
    PLEASE HELP. i really love ubuntu but i need internet stability.

  2. #2
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    Re: Realtek Wireless card

    I've had a LOT of trouble with a Realtek 8192E under 64-bit Ubuntu. Can you post the results of the following terminal commands?

    Code:
    lspci | grep work
    sudo lshw -C network

  3. #3
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    Re: Realtek Wireless card

    Quote Originally Posted by northd_tech View Post
    I've had a LOT of trouble with a Realtek 8192E under 64-bit Ubuntu. Can you post the results of the following terminal commands?

    Code:
    lspci | grep work
    sudo lshw -C network
    I will post the results of when my internet works and when it doesnt because my problem is my connections ends up dropping after 5 minutes or so and i cannot reconnect.

    At 7:38 pm
    louie@louie-HP-G62-Notebook-PC:~$ lspci | grep work
    02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvA Wireless LAN Controller (rev 10)
    louie@louie-HP-G62-Notebook-PC:~$ sudo lshw -c network
    [sudo] password for louie:
    *-network
    description: Wireless interface
    product: RTL8191SEvA Wireless LAN Controller
    vendor: Realtek Semiconductor Co., Ltd.
    physical id: 0
    bus info: pci@0000:02:00.0
    logical name: wlan0
    version: 10
    serial: 70:f1:a1:e8:b1:1a
    width: 32 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=rtl819xSE driverversion=0017.0507.2010 firmware=63 ip=192.168.0.153 latency=0 link=yes multicast=yes wireless=802.11bg
    resources: irq:16 ioport:3000(size=256) memory:d3500000-d3503fff
    *-network
    description: Ethernet interface
    product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
    vendor: Realtek Semiconductor Co., Ltd.
    physical id: 0
    bus info: pci@0000:03:00.0
    logical name: eth0
    version: 02
    serial: c8:0a:a9:f0:bf:c7
    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 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
    resources: irq:42 ioport:2000(size=256) memory:d1410000-d1410fff memory:d1400000-d140ffff memory:d1420000-d142ffff
    louie@louie-HP-G62-Notebook-PC:~$

    At 7:58 (when internet stopped working)
    louie@louie-HP-G62-Notebook-PC:~$ lspci | grep work
    02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvA Wireless LAN Controller (rev 10)
    louie@louie-HP-G62-Notebook-PC:~$ sudo lshw -C network
    [sudo] password for louie:
    *-network
    description: Wireless interface
    product: RTL8191SEvA Wireless LAN Controller
    vendor: Realtek Semiconductor Co., Ltd.
    physical id: 0
    bus info: pci@0000:02:00.0
    logical name: wlan0
    version: 10
    serial: 70:f1:a1:e8:b1:1a
    width: 32 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=rtl819xSE driverversion=0017.0507.2010 firmware=63 ip=192.168.0.153 latency=0 link=yes multicast=yes wireless=802.11bg
    resources: irq:16 ioport:3000(size=256) memory:d3500000-d3503fff
    *-network
    description: Ethernet interface
    product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
    vendor: Realtek Semiconductor Co., Ltd.
    physical id: 0
    bus info: pci@0000:03:00.0
    logical name: eth0
    version: 02
    serial: c8:0a:a9:f0:bf:c7
    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 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
    resources: irq:42 ioport:2000(size=256) memory:d1410000-d1410fff memory:d1400000-d140ffff memory:d1420000-d142ffff
    louie@louie-HP-G62-Notebook-PC:~$

  4. #4
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    Re: Realtek Wireless card

    also this problem was occurring on 64 bit version. I switched to 32 bit to see if the problem would be solved.....it didnt.

  5. #5
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    Re: Realtek Wireless card

    Bumppppp please

  6. #6
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    Re: Realtek Wireless card

    bump

  7. #7
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    Re: Realtek Wireless card

    It will most likely be a driver issue. You have to google your wifi card and or driver and Ubuntu in same line and see if there has been issues and if there was a fix put out.
    I have a hp also with intel wifi card and had to put in line of code to disable n feature
    for same reason as you. Found fix by researching, check launchpad also. This will give
    your thread a bump. If it is a standard card for HP then there is a lot of users who have had this problem. Good luck. when you find it there will be directions on how to fix. Launchpad.net always has good directions, look in upper right of Ubuntu forums page.
    Remember hence where you come and pass it down.
    Ubuntu Forums member #899097 and Ubuntu Member:
    http://www.ubuntupocketguide.com/index_main.html
    Main Page -

  8. #8
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    Re: Realtek Wireless card

    Quote Originally Posted by yungballla6 View Post
    02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvA Wireless LAN Controller (rev 10)

    *-network
    description: Wireless interface
    product: RTL8191SEvA Wireless LAN Controller
    vendor: Realtek Semiconductor Co., Ltd.
    physical id: 0
    bus info: pci@0000:02:00.0
    logical name: wlan0
    version: 10
    serial: 70:f1:a1:e8:b1:1a
    width: 32 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=rtl819xSE driverversion=0017.0507.2010 firmware=63 i
    I've boldfaced the most relevant parts of that above- it's a Realtek 8191SEvA (which I'd read as an 8191SE version A, but I'm not certain on that bit).

    In my search here, that came up on the following thread, and pages 7 & 8 seemed the most hopeful/helpful- see the posts by "VideoRoy":

    [B]Wireless stops working periodically Ubuntu 10.10
    http://ubuntuforums.org/showthread.php?t=1597881

    I'll need to do some more searching through my notes, but I had to email "Kidman" at Realtek support and blacklist some modules before I was finally able to get that Realtek 8192E working under 64-bit Ubuntu (after many months and several Realtek driver versions). Most people (including my relative whose 64-bit Toshiba I was working on) had little to no trouble with 32-bit Realtek.

    As garvinrick4 said, this is probably a "new" old problem due to some kernel tweaking in the 11.xx versions. Once you/we get it figured out, I'd keep some good notes and your source tarballs or .deb files handy (as well as keeping 2-3 "old" Linux kernels with WORKING wireless for future reference in your bootloader).

    Also, the Realtek 8192SE is very different from the Realtek 8192E (from my experience), but I believe that your 8191SEvA should probably use the same driver as the Realtek 8192SE.
    Last edited by northd_tech; May 2nd, 2011 at 03:51 AM.

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