Ubuntu Networking :: Thinkpad W500 Wireless Connection Keeps Dropping

Oct 27, 2010

I have a Thinkpad W500 with:

Code:
Network controller: Intel Corporation Wireless WiFi Link 5300
I have Ubuntu 10.04 32bit installed:

Code:
Linux dani-laptop 2.6.32-25-generic #45-Ubuntu SMP Sat Oct 16 19:48:22 UTC 2010 i686 GNU/Linux

It has been working fine since I installed 10.04 but recently (end of last week I think) it stared dropping the wireless connection very often. So it will disconnect and reconnect, but I can't seem to find a pattern, sometimes it goes for hours without an issue and sometimes it does it several times in a row. Below is an extract of syslogs from when this happens. But not sure if what I need is there... the only weird thing I can see is:

Code:
Oct 27 18:58:33 username-laptop wpa_supplicant[1296]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys

Code:
Oct 27 18:58:32 username-laptop wpa_supplicant[1296]: Trying to associate with 00:1e:be:a6:c0:0f (SSID='accessp' freq=5280 MHz)
Oct 27 18:58:32 username-laptop NetworkManager: <info> (wlan0): supplicant connection state: completed -> associating
Oct 27 18:58:32 username-laptop kernel: [123835.372217] wlan0: deauthenticating from 00:1e:7a:6f:d9:90 by local choice (reason=3) .....
Oct 27 18:59:29 username-laptop ntpdate[4765]: no server suitable for synchronization found

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Jul 9, 2010

I'm trying to choose between the Lenovo Thinkpad W500 and the older T61p. The W500 is said to have a higher quality display than the T61p, however there seem to be more problems with running Linux on it. One of the reasons for this is the fact that it has switchable graphics, with one of the GPUs being an ATI FireGL. The older T61p comes with Nvidia Quadro FX only, which as we know is more Linux-friendly.

Which model should I choose? Will certain issues such as being able to suspend / resume be cleared up with newer kernel releases?

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Ubuntu Networking :: Wireless Connection Keeps Dropping?

Nov 4, 2010

My wireless connection keeps dropping is very unstable, signal strength goes up and down here is the info i got from the terminal

*-network:0
description: Ethernet interface
product: 82801DB PRO/100 VE (MOB) Ethernet Controller
vendor: Intel Corporation

[Code]....

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Jan 20, 2010

as the titles states my wireless is dropping out but the networks manager is still saying i have a connection. the only way i have been able to be on the network every minute or so i have to manauly disconnect and reconnect to my wifi. under my windows 7 and vista installs the wireless card works fine now my card is a dlink dwa-547 and it uses the arthores chipset, it is encprtyed wifi, wpa2 aes on a n/g based network

Code:
peter@ubuntu:~$ sudo lshw -C network
*-network
description: Wireless interface
product: AR5008 Wireless Network Adapter

[Code]....

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Aug 8, 2011

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Fedora release 12 (Constantine)
Kernel Linux 2.6.32.9-67.fc12.i686
GNOME 2.28.2
Memory: 2.0 GB
Processor: Intel Pentium R 1.60 GHz

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Jan 24, 2011

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my wireless signal is fairly week, however connection works everytime and in xp this is not an issue.

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May 7, 2010

I was having trouble with my wireless connection, it was dropping every 5 minutes or so after upgrading to 10.04 and ran across a thread where someone recommended entering

Code:
sudo apt-get install linux-backports-modules-wireless-lucid-generic

After entering the command I have lost all ability to even use my wireless ability even if it was for 5 minutes. Now I am using a different kernel, internet still drops every 5 minutes, but would love to get my internet up and running again.

I am using a Dell Studio XPS Laptop

Code:
*-network
description: Ethernet interface
product: MCP79 Ethernet

[Code]....

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Feb 8, 2011

I'm using an Acer Aspire 3000 since Opensuse 9.3. Wireless connection was fine with ndiswrapper. I upgraded to 10.0 and wireless was perfect with the broadcom firmware. Now I just installed openSUSE 11.3 and my wireless connection became a nightmare: connection drops multiple times in a day and network manager remains stuck in "Interface Configuration". Sometimes I'm asked for the wpa password but Network Manager is unable to reconnect until I disable and re-enable my wlan card using the killswitch. The access point is the same zyxel b+g I own since 5 years! I just bought a new eeepc and I installed on it openSUSE 11.3 too. The network connection behaves the same!! The Network Manager says "Interface configuration" and I must switch the wireless off and on to have the network back. I made a radio scan and I'm using a channel on my own. I also tried to disable dhcp without success.

ACER
# uname -a
2.6.34.7-0.7-desktop #1 SMP PREEMPT 2010-12-13 11:13:53 +0100 i686 athlon i386 GNU/Linux

# lspci -vvvnn
00:0b.0 Network controller [0280]: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller [14e4:4318] (rev 02)
Subsystem: AMBIT Microsystem Corp. TravelMate 2410 [1468:0312]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64
Interrupt: pin A routed to IRQ 17
Region 0: Memory at e2000000 (32-bit, non-prefetchable) [size=8K]
Kernel driver in use: b43-pci-bridge .....

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Mar 21, 2010

Toshiba A215 laptop
Driver is rtl8187
I really need to make the connection constant and non-dropping. I've had opensuse 11.2 since march 7 2010, figured out most of it by lurking and reading threads didn't want to make threads but I really don't know what to do to make this connection stay on. I am posting Terminal commands from when I am both on and offline.

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:~> ping -c 5 66.70.73.150
PING 66.70.73.150 (66.70.73.150) 56(84) bytes of data.
From 192.168.1.28 icmp_seq=2 Destination Host Unreachable
From 192.168.1.28 icmp_seq=3 Destination Host Unreachable

--- 66.70.73.150 ping statistics ---
5 packets transmitted, 0 received, +2 errors, 100% packet loss, time 4000ms
, pipe 2
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Bit Rate=11 Mb/s Tx-Power=20 dBm

:~> sudo /usr/sbin/iwconfig wlan0 rate 24M

:~> /sbin/lspci -v
00:00.0 Host bridge: ATI Technologies Inc RS690 Host Bridge
Subsystem: Toshiba America Info Systems Device ff10
Flags: bus master, 66MHz, medium devsel, latency 64 .....

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fter checking syslog, I found something interesting...it kept complain eth0 is invalid, then it said it found a better connection?I found that extremely weird..

Code:
Apr 30 06:24:32 support kernel: [ 961.236895] e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang

[code]...

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Jan 5, 2010

In summary, I am using openSUSE 11.2 x64 on an Acer laptop with a wireless AR928X card. I can connect to my WEP-secured network when I boot up. After some time (it might be minutes, it might be hours), I am prompted for my WEP password again. This never works, despite being the one which gets me on-line at start-up!. The only solution is a reboot. The problem is intermittent and doesn't seem to depend on my on-line activity. I have tried the following with the same result:
KNetworkManager
Traditional using IFUP
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Feb 20, 2010

I have a windows installation (partition) but have installed into freespace on the same drive using the auto-partition manager, etc, and everything is fine. I got my network going fairly easily by going Preferences > Wireless and inputting SSID and WPA encryption key (PSK). My router issues an WLAN IP, I can get on the net, I can see my other Windows PCs on the network, I can reach my router, and all is good.So after several hours of mooching about and looking at things, I have updated all the Linux packages via Synaptics (following a prompt to update everything) including GRUB. My dual boot now shows two versions of the OS:

GRUB 1.7~Beta4
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May 13, 2010

Two weeks ago I decided to ditch my XP install completely and switch to Ubuntu 10.04. So far so good, and I'm very happy with my decision. However, about 3 days ago, my wired connection started playing up. It keeps dropping out every 2 hours or so between 13.00 and 04.00. After dropping out, it immediately reconnects again (at least when I use Automatically DCHP config). From 04.00 to 13.00 it is more or less stable.

I tried resolving by reserving an IP in the DCHP Client Table in my router (linksys WRT120N). Additionally, I told the Network Manager to use the Manual configuration. Unfortunately these changes didn't help and the problems stay the same......

The daemon.log shows the following information code...

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Jan 10, 2011

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Jan 5, 2010

Here's the situation: I've got an eee pc 901 running Ubuntu 9.10 netbook remix. I'm using it to connect to a WPA-encrypted wireless network on a WRT54GL running dd-wrt. It mostly connects and works ok, but sometimes it just stops working for no apparent reason (the netbook still shows itself as connected), but you can't get anywhere until you manually disconnect and reconnect. Other times, it will drop the connection, and then quickly reconnect (or sometimes not). Obviously, this behavior is pretty irritating. At first I thought the problem was with the router, but I checked the logs there and they all seem fine, and other computers on the same router don't have this problem. Looking at "dmesg | tail" on my netbook, I see a lot of instances of the following error, which I'm thinking is probably the problem:

Code:
[11137.762233] ERROR!!! RTMPCancelTimer failed, Timer hasn't been initialize!
[11142.872797] ===>rt_ioctl_giwscan. 4(4) BSS returned, data->length = 440
[11152.883274] ===>rt_ioctl_giwscan. 5(5) BSS returned, data->length = 556
[11152.883529] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=11)
[11163.952056] ERROR!!! RTMPCancelTimer failed, Timer hasn't been initialize!

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One other thing, I also see repeated instances of these lines (or similar ones) in dmesg, which look like they could be related.
Code:
[44096.275923] RX DESC f30ca000 size = 2048
[44096.276885] <-- RTMPAllocTxRxRingMemory, Status=0
[44096.281404] --> Error 2 opening /etc/Wireless/RT2860STA/RT2860STA.dat
[44096.281424] 1. Phy Mode = 0
[44096.281435] 2. Phy Mode = 0
[44096.309841] 3. Phy Mode = 0
[44096.314533] MCS Set = 00 00 00 00 00
[44096.316196] <==== RTMPInitialize, Status=0
[44096.316280] 0x1300 = 000a4260
[44096.401269] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=11)
[44096.472502] ===>rt_ioctl_giwscan. 1(1) BSS returned, data->length = 116
[44096.472977] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=11)
[44106.768056] ra0: no IPv6 routers present

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Feb 25, 2010

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Jan 1, 2010

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Feb 25, 2010

As soon as i'm starting to copy a large file enough file (>700Mb) to my ubuntu box (connected to an Asus router via wifi) from a Windows 7 client (connected to router via ethernet cable) i get a dramatic drop in speed. upload starts at 1,0Mb/sec with a ping to ubuntu box at <1ms, and in 2 minutes it drops to 200kb/sec with a ping of over 1000ms! The ping increases with every second in a linear progression.

To exlude router as a possible problem copying to a windows 7 notebook connected to router via wifi results in an average of 2,7Mb/sec with an average ping of 150ms.

MB Model: Asus P5B Deluxe wifi
OS: Ubuntu Server 9.10 + desktop installed
Wifi configured via GUI

2. lsusb

3. wlan0

4. lsmod

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Dec 7, 2010

I have just switch to Ubuntu on my laptop from Windows 7 and I am experiencing alot of wireless dropping.

The signal itself is full and I am very close to the router.

What could be the issue and how do I go about rectifying it.

Laptop: Dell 13z.
Wireless: Intel 5100 agn
Ubuntu 10.10 x64.

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Apr 13, 2011

Within the last couple of days or so, my wireless has been on the fritz. It keeps disconnecting and reconnecting every minute or so, which is annoying to say the least. The information relating to my wireless network is:

Laptop model: Toshiba Satellite L350
Wireless interface: Atheros AR5001 Wireless Network Adapter
Interface:

[code]...

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