Ubuntu Networking :: 11.04 - WiFi Gets Slower And Times Out
May 7, 2011
Installed 11.04 on my Acer Aspire 5742-6674. It has a Atheros adapter. In my Windows 7 partition, its a AR5B95. But Ubuntu is says its a AR9287. I'm using the ath9k driver, version 2.6.38-8-generic-pae. I tried the following:
Code:
sudo -s
echo "options ath9k nohwcrypt=1" > /etc/modprobe.d/ath9k.conf
reboot
Still not working right. My wifi works ok at first...gets slower and slower...and eventually times out on everything. At that point, I have to restart the computer so it can work normally for a short time. Works totally fine when wired. Works totally fine wired or wireless on my Windows 7 partition. Both wired and wireless worked fine when I was using 10.10.
It used to have a lightening speed. But now every application is taking few seconds to start, even on Konsole, the commands take some seconds to get typed ! (I literally have to wait for cursor to move and commands to get typed on Konsole). Folders are taking some seconds to get opened !
I rebooted the computer but that proved to be useless.
Here the ps output:
Code: anisha@linux-uitj:~> pstree -Apuh `id -anisha` id: invalid option -- 'i' Try `id --help' for more information. init(1)-+-acpid(1054)
Im experiencing a strange problem with 10.04. When it first boots up its reasonably quick (as snappy as Gnome ever has been) but after its been running for a day or two it gets ununsably slow and has to be rebooted.
I dont see how it can be anything to do with my hardware as it runs OK when first started. Ive monitored RAM usage and it doesnt seem to differ much. There's always the same amount unused.
I have EastLink cable Internet and I have the fastest residential service money can buy, I get speed test results of 30mbps down and 2mbps up, that being said, my Internet was lightning fast on windows and Mac but when I installed Ubuntu, which is my favourite OS, my Internet is very slow and laggy. Sometimes it could take several minutes for a web page to load and some torrents download at 1-2 MBps and some download at under 100kb/sec, some web pages load instantly, some take longer.
I've searched other forums I found was turning off IPv6, I am not really sure what that is but I followed the steps provided and shut it off but did not notice much of a difference. I am basically a beginner when it comes to Linux, I use the OS for my day to day school and entertainment. I listen to music, watch movies, do school work and such since I am a university student. I really love Ubuntu and don't want to be forced to go back to Win blows, I really don't like windows at all so I would really like to solve this issue and stick with this operating system.
I have a 100MBit connection and previously when I used vista I had no problem downloading files at 100Mbit with my vpn provider. Hower the PPTP vpn connecion I'm using on ubuntu seems to be capped to 10 MBit.
I am doing backups and restores to and from a backup server machine in the garage (in case of fire or theft) using rsync, and the LAN is running much slower than I think it should. Best consistent speed I get is 40Mb/s. The lights on the interface cards indicate it's in Gb mode, and the interfaces are fairly new. The router is a Netgear WNDR3700 the top-of-the-line consumer-grade router. Hardwire only, using Ubiquiti ToughCable and ToughConnectors, less than a 50' run.
Just installed the latest 11.04 64bit ubuntu, using std cd install alongside windows7, ticking the "add all extras" option, to ensure I got all the latest drivers etc.. The pc is brand new
Acer emachines E644 - AMD 2 Core C-50 3Gb DDR3 mem 500 Gb hard drive
Pre-installed: 64bit Win 7 home premium I've literally changed nothing in win7 other than using wubi to install ubuntu 1st time around (ubuntu appears as a win program - and was un-installed as such). Note: It is too late to now check, but......... under wubi/win7 I had no sense that the browser firefox was running slow - i didn't do a speedtest.net cos of other priorities (and it seemed fine). On advice, I started again (new partitions etc). The Problem: Ubuntu is now 25% slower (broadband) than Win7! Actually, it feels worse than that - more like it was on my previous lap top that had 512Mb ram running xp. Here are the results after switching os's a couple of times.
[Code]....
Firefox managed one spurious result of 5.89, but the graph (on the speedtest display) was absolutely all over the shop (like it's overall results). Compare that to iExplorer - total stability, and in fact, more like 30% faster + a much better ping. Anyway, I guess you know all this, I've seen that plenty of others have noticed this speed drop in the past, so:
I have a desktop running Ubuntu 8.04. I installed 10.04 on my laptop. When I mount my desktop music folder on my laptop and transfer files, they now only go at 100-200 KB/s. When I had 9.10 installed, they transferred at 1-2 MB/s.
This is the command I use to mount the directory: sshfs matt@169.254.6.233:/home/matt/Music/ /home/matt/Music/desktop/ Is there any way I can speed it up to get it back to max speed?
My school has (once again) chosen to change their wireless network. This means it has gotten a lot slower, and that only our hotspot works. Our hotspot however is secured so that im unable to enter facebook, and a lot of other websites, etc. So what i did in windows was installing a program called hotspot shield, which redirects you ip through a server, so the LAN Admin basically have no control of what you're doing if he haven't got more skill than the one we have. I think what Hotspot shield does is making a vpn connection (correct me if im wrong) and i would certainly like to do that i ubuntu as well.
I recently switched my mom from Windows to Fedora , and ever since her Internet speed went down. Now it takes, on average, 6-8 seconds longer for her to load a web page with Firefox. Tried to replace the modem -- didn't help. She is on a DSL connection.
But here is the striking part. Her BitTorrent speeds are better than mine, and I have a cable rather than DSL.
I can't for life imagine how these two can coexist. An innocent web page takes forever to load, and torrents are so fast. By the way, she does say that torrents used to be *even* faster on Windows.
For some reason on these days i've noticed that my internet speed seems to go faster when i'm on my windows partition (shame on me i know xD) when i go back to my linux pages take too much time to load, which doesn't happen in windows, i have never had this problem before/
"Dell 1525 WLAN PCIe card with11n mini-Card & external antenna" wireless card. It got recognized fine by FC12, but it was rather slow. I had read that life would be better in FC13 with the new kernel. After a long wait, I upgraded to FC13 yesterday.
It seems that the wireless is indeed faster. However, it it clearly a lot slower than under Windows 7 (it is a dual boot PC). My test is simply to play say Hulu in full screen: under Windows it looks fine, under FC13 it plays in slow motion.
I have a FC13 box that has both Gnome and KDE sessions installed.
I have noticed on the KDE session that data transfer rates are slower than when I use Gnome.
In Gnome, I can transfer files between my FC13 machine and my Ubuntu 10.04 pc at a rate of 6.5 MB/s (52 Mb/s if my maths is correct), but in KDE the rate is only 3.5 MB/s (28 Mb/s).
"ethtool eth0" shows my NIC speed as 100 Mb/s. Obviously I am not hitting anywhere near that speed in either session, (a separate article may be happen in the future to address that), but I am curious as to why KDE is that much slower for file transfer.
I've been using fedora on my Lenovo R61i since I got it...I believe the first version I used on this laptop was f10. I always try to keep it on the latest distro and I also enjoy a clean install every year or so. One thing I was always impressed with was how quickly I could go from sleep to back up and online. So I decided it was time for a clean install this weekend to fedora 15. Now when I wake it up (open the lid), it takes over a minute for the wifi to connect again. This hasn't been the case for the last 4 distro's so I'm wondering what I can do to speed that process back up, is there a particular package I can downgrade or is this something on their radar already and I should just wait for an upgrade?
My laptop has an internal wireless device and a button to turn it on/off, but since it has bad reception I use an external USB wireless adapter.The problem is that if I turn the internal wireless device off using the button, it also turns the USB wireless adapter off.Is there anyway to use the killswitch (the button) only for the internal wireless device?This only started to happen in Ubuntu 10.04.
I have only had a few weeks worth of experience with linux, so I'm probably considered a newbie at this but I felt like giving it a shot. I just configured my new Toshiba Satellite A505-S6969 to jaunty. Most of the transition is going well but I'm stuck with a few issues, one of which is getting my wifi to work. Right now I'm working off of an ethernet cable.spci returns
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07) 00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express Graphics Port
Installed ubuntu 9.10 dual boot with win7 yesterday. Everything working but Wifi. Wifi works fine with Win7. No Wifi in Ubuntu. Very confused. I have info from the wifi trouble ticket post.There does not seem to be a driver for this card anywhere.
lawrence@lawrence-laptop:~$ lspci 00:00.0 Host bridge: Intel Corporation X58 I/O Hub to ESI Port (rev 13) 00:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13)
get WIFI working on my Dell D600 with Ubuntu 11.04 freshly installed. I some limited sucched following the this post t=1621331 this got the card working but it was very very slow over 70% packet loss to the WIFIrouter. 1. Machine details Dell Latitude D6002 Wireless Broadband and Chip setlspci -nn | grep Broadcom - 02:03.0 Network controller [0280]: Broadcom Corporation BCM4309 802.11a/b/g [14e4:4324] (rev 02)3. Check interfaces
eth0 Link encap:Ethernet HWaddr 00:0b:db:e0:1c:5b UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
I have a pc which has 2 network cards, 1 wifi and 1 ethernet card.
I'm using wifi card to connect to wifi network (internet) and i'm planing to share this wifi/internet connection via ethernet to wireless router (siemens sx763) so i can have internet on my other devices, e.g. mobile phone, laptop.
I am running (K)Ubuntu Lucid 10.04 64bit on a Dell Latitude E6400, WiFi Card Intel 5100. Never had any problems with networking. Up to about 2 weeks ago. I do realize there have been quite a few posts with this network adaptor, but non really described the problem I have here.
What happens is that suddenly the WiFi LED on the computer stops blinking, the WiFi connection gets disrupted, and the device is not recognized anymore when checking ifconfig. Only cold restarting the machine helps then... it will work for a while (between 1 and 20 minutes) and then crash again.
On Windows 7 the card works perfectly fine. With Ubuntu 11.04 in Live CD mode I have the same effects (connection crashes after a while). Also tried booting an older kernel, no success.
My exact hardware:
Code:
I notived the following problems in /var/log/kern.log
I have 2 connections, wlan and wired, and I'd want to have a few websites (in my browser) to connect through the wireless connection while other go through the wired rj45 connection. s it possible? (without unplugging the rj45 cable...)
the only error message I can find comes from "dmesg|tail"all it shows is "no IPv6 router"any body know what is going on here or where where to look for more clues the next time I get around public wifi Oh the windoze washers and apple polishers don't seem to have any problems at all
I have an old PowerBook G4 that I would like to use as a 'dummy' computer for learning wireless penetration (WEP/WPA attacks) more effectively. I had been using a wireless router, but I gave it away I can use Mac OS X to share an ethernet connection over wifi, but this is _very_ un-configurable. You get two options only, WEP and a key-length. So, I would like to install someway to make this wireless connection more configurable.
I just installed Ubuntu 11.04 in a dual boot environment on a spare laptop( Dell Inspiron 6000 ) I have other machines using older distro's of Ubuntu but do not have them all on line... utility costs are ridiculous here..anyway.... I found some optimization tips for Firefox and those have been done and I did find earlier information about this or a very similar problem but all the suggestions mentioned there are already in place here network wide.. Basically what is happening is this: When a web site is opened from the browser in the lower left hand of the screen it displays "Looking up www.google.com" or what ever url was entered.
I know Win is not a good comparison and I haven't gotten any additional Ubuntu boxes on line yet but Win seem unaffected by this.
Any recommendations as to what I should try next?? I have DNS server information stored in the router using Google Public DNS and Open DNS as a backup and uPNP is disabled. Seems like the program (Ubuntu) is plenty fast even on this Celeron based machine but the time taken to look up DNS data is a lot slower than anticipated.
My ADSL router NAT's any computer behind it here at home. I have a PC or two a Sun ultra10 and ultra5 and E450 etc.
The problem is my PC reports via "tcpdump -i eth0" that 22:54:47.035683 IP icute.pelnet.net.50683 > 224.0.0.56.46144: UDP, length 1292 is going on 140 times every second.
How do I prevent this from continuing and why is it happening? If possible I don't want to invoke iptables as my NAT router does a fine firewall job.
