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yungballla6
May 1st, 2011, 06:57 PM
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.

northd_tech
May 1st, 2011, 07:17 PM
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?


lspci | grep work
sudo lshw -C network

yungballla6
May 2nd, 2011, 12:59 AM
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?


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:~$

yungballla6
May 2nd, 2011, 01:12 AM
also this problem was occurring on 64 bit version. I switched to 32 bit to see if the problem would be solved.....it didnt.

yungballla6
May 2nd, 2011, 02:45 AM
Bumppppp please

yungballla6
May 2nd, 2011, 03:08 AM
bump

garvinrick4
May 2nd, 2011, 03:32 AM
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.

northd_tech
May 2nd, 2011, 03:48 AM
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":

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 819[B]2E 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.