Ubuntu Networking :: WIFI Performance Degraded After Upgrade To 10.10
Jan 12, 2011
I would like to re-raise this topic that I have seen on other discussion boards but seems to be going no where.I have been using Ubuntu for many years now having switched from other distributions. All my machines ran some version of Ubuntu, until just recently. I upgraded my personal HP TX2500 from 9.04 to 10.04. No problems. After 10.10 had been out for a while I upgraded again. The wireless would drop when busy/(signal slightly weakened) etc. It would not function again unless the wifi module was reloaded.
Then I installed 10.10 on my HP NC6400 the same thing occured. I installed Ubuntu 10.04 instead. It seemed no better. After some Googling, it seemed I was not alone. I tried all the suggestions I could find and none of them worked. One suggestion was to install Fedora 14. This works perfectly on the nc6400. The HP TX2500 has been reinstalled back with 10.04 where the wireless seems ok and I assume I am stuck there for a while.
Now my question is why would the networking behave this way for Ubuntu 10.10 (10.04 as well on the NC6400) but wireless on Fedora 14 is perfect (I mean really good! Better than either Ubuntu 10.04 or 10.10 on any of my laptops) on the NC6400. I am hoping that we can find a way to fix this, otherwise I will likely have to drop Ubuntu completely because I do not have an upgrade path for laptops. There must be many other users in the same position who are not discussing it and just rebooting each time this occurs. This must give a negative perception of otherwise great software.
running natty 64bit @ MBA3,2.Wifi performance is sometimes abysmal (~200ms ping to AP, 10% packetloss) with my Linksys WRT54Gv2 AP.It is not the hardware, as there is no wifi problem while running MacOSX at the same location.It is not the location, as MacOSX works fine (~6ms), and so does another computer with wifi connection (~1ms) on the same desk.So I'm suspecting the driver: Broadcom BCM4353 802.11 Hybrid Wireless Controller 22.214.171.124.
I updated successfully to 10.04 via wireless, then I downloadsynthesizer via wireless. The next day, today that is, can't get wireless to work. It keeps prompting mor the passphrase, I enter everything correctly, all the other computers in the house have no problem.
I'm facing a strange problem after upgrading my Ubuntu to 10.10. After I start up the system, the wifi is not getting connected by default (which was getting connected automatically in the earlier version). So I right click on network manager and click on 'Enable Wireless' option and it gets connected. So far so good. Now I close the laptop lid - it goes to sleep mode and after it wakes up, the wifi never gets connected. When I right click on the network manager icon, the 'Enable Wireless' option is disabled! I have to reboot my machine to get connected!
after upgrading to 11.04, I can't use the fn-f2 combination anymore to activate the wifi card. I'm using a Dell latitude laptop. Wifi is functioning normally when it's on and I can even turn it off with the hotkeys. When I try to turn it back on, the light goes on for a second and than dims again. I than have to reboot into Windows to get it back on, which is kind of annoying.
i've got an IBM thinkpad 1858. fedora 11 & 12 (KDE spin) were always running without any major problems. today, i upgraded the system from f12 to f14 using preupgrade (and a wired internet connection). the upgrade process went smoothly.
but now i don't have a wifi connection anymore - there is no icon shown in the system tray and the led does not blink. the network configuration tool shows eth1 to be inactive and the button to activate it is grey.
lspci -v shows: Network controller: Intel Corporation PRO/Wireless 2200BG [Calexico2] Network Connection (rev 05) Subsystem: Intel Corporation IBM ThinkPad R50e Flags: bus master, medium devsel, latency 64, IRQ 21 Memory at 90306000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: ipw2200 Kernel modules: ipw2200
since the upgrade i see all avaible wifi networks as they have 100% signal, both in NetworkManager and Wicd.in iwconfig and iwlist the signal levels change, but the link quality remains the same: 70/70 (see below). What could be worng? What can i do?
I have just upgrade to natty from maverick and my usb wifi dongle doesn't want to work. The usb wifi adapter i use is a Thonsom Speedtouch 121g. When using ubuntu 10.10 it work's fine after installing the package linux-firmware-nonfree, but after upgrading to natty it has stop working (the linux-firmware-nonfree package is installed [don't know if is the same version or an upgraded one]).
The network manager doesn't display available wifi nets. The output for lsusb is:
Bus 001 Device 004: ID 06b9:0121 Alcatel Telecom SpeedTouch 121g Wireless Dongle
I'm on a Dell Inspiron 6400 which had been running Ubuntu 10.10 (32 bit) perfectly.Today I upgraded it to Natty and the wifi now refuses to work. Details: While no Additional Drivers were needed on 10.10, upon installing Natty it prompted me to install "Broadcom STA proprietary wireless driver". Now when it's active I don't even have the option 'Enable Wireless' (only Enable Networking). If I disable STA the Enable Wireless option comes back, yet I can't actually search for wifi networks or connect to my saved one. The keyboard key to enable/disable wireless also does nothing.
I can take this laptop to somewhere with an ethernet connection for an afternoon if need be, but am currently stumped as to what to do. Obviously I know this machine can handle Wifi under Ubuntu - it's definitely a Natty problem.
i have a dell 1501 that has been upgraded from 10.10 to 11.04. everything was working okay. and then the user ran an upgrade recently. subsequently the wifi has mysteriously stopped working. it connects okay if one plugs it directly into the router but the wifi seems to have just stopped working.my mini 9 connects fine to the netgear wifi router using wireless.when i run the system tests for networking i get the errors..."root could not find def gateway info /proc""root could not find default gateway by running route"here is the output from some diagnostic commands.NOTE:this is similar to a post titled "wi-fi dead?" but the output is not quite the same...
lauren@lauren-Inspiron-1501:~$ iwconfig lo no wireless extensions. eth0 no wireless extensions.
Wifi network operated perfectly with f13. Upgrading f13 to f14 did not show any problems except for networking. It seems that the wlan0-link is not ready. Consequently no network information about adresses can be obtained. Tried with network tools to activate wlan0. No reaction Tried to deactivate Networkmanager and bring network up with
service NetworkManager stop ifconfig -a Then ifconfig wlan0 up dhclient wlan0
No reaction on network. The NetworkManager icon disappears which is understandable.
i'd like to extend that ma intel wifi link 5100 is not detected no more after perform upgrade package( upgrade the kernel too ). when im using command 'lshw -C network' , there is appear to be detected, but not on command 'iwconfig' or even 'ifconfig' it just show nothin. also network-manager no longer show that ma wireless is work properly anymore.
the old kernel : 2.6.25-22 ( my wireless detected and usable ) the new kernel : 2.6.25-23 ( my wireless detected and unusable )
My Intel Corporation WiFi Link 1000 Series wireless card stopped working yesterday after I did an update via Update Manager.After the upgrade, wireless is disabled and the option to enable it in Network Manager is grayed out. I thought that it might be the new kernel, but changing back to the old kernel I still have the problem.
I am having a lot of performance problems since my upgrade my ATI board does not get properly supported (tried a lot but nothing really helps)my keyboard typing is horrable : i have to see at each click of it got accepted ; cannot type text properly screen performance is bad - often the screen greys out and back to color (probably because of driver)
Since I upgraded to Slackware64 13.1 my system feels slower than before (Slackware64 13.0).I paid attention to the documentation (changes_and_hints.txt, readmes etc.) regarding the update. The only thing I changed is, that I used the KDE-4.4.4 packages of AlienBob instead of the KDE-4.4.3 packages of Slackware.
But since AlienBob at his blog wrote, "Although it seems (by looking at the changelog between 4.4.3 and 4.4.4) that there were no spectacular updates in the latest stable KDE Software Compilation, I got some feedback that 4.4.4 does feel �snappier� than the 4.4.3 which is part of Slackware 13.1.", I thought it would be a good idea to use these packages.
I also recognized a few crashes in KDE, which I didn't have before so often. Therefore I moved the .kde to .kde_bak and configured kde new. This improved the behaviour regarding the crashes, but it still seems not that stable to me like the KDE 4.2 in Slackware64 13.0.Did anyone recognize similar problems after the upgrade, or can give some hints how to solve it?
I upgraded my old Kubuntu installation to 10.10 Maverick Meercat and I am now experiencing a really annoying problem. I boot my computer and everything seems fine for a while, but eventually my disk performance drops to horrible levels. It's not gradual. It's fine one second and then abysmal the next.
If I do "cp file1 file2" and then kill the cp process after 10s, there are only a couple of MB copied.When I run dmesg after the performance degradation, I see this:
I am running openSuse 11.2 (32-bit), my CPU only supports 32-bits. I have a hardware RAID device. My system has 4GB of RAM. When I configure my system to only use 3GB, 2GB, or even 1GB, using mem=1024M in grub, my RAID performance is much better then when letting my system use the default 4GB available.Can anyone explain to me why this is? Is there anything I can do, i.e. kernel configuration, that will help performance when running with all 4GB enabled?
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)
I just wanted to know if having my laptop set to ondemand, will this affect performance in any way? I realize it increases the clock speed to performance when the CPU is under load, but does the time it take to go from ondemand to performance affect speed? Will there be any noticeable difference between the two setups? I have a dual core intel at 2.2GHz when in performance. When ondemand is set with no load it downclocks to 800Mhz.
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 : 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:
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...)