[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Dave Russell, and only Dave Russell, could you please execute the following in a terminal: apport-collect 836250 ** Changed in: linux (Ubuntu) Status: Triaged = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I am not using Ubuntu but I suffer this problem with my Asus Zenbook Prime (wireless is Intel Centrino Advanced-N 6235 (rev 24)). In short, either of the following two actions fix the network slowness. 1. Disable 11n capability via `modprobe iwlwifi 11n_disable=1` or the kernel boot option `iwlwifi.11n_disable=1`, depending on whether iwlwifi is a module or not. Everything else works great but you have to use 11g. 2. Disable power management via `iwconfig wlan0 power off` or the appropriate setting in a power management tool, laptop-mode tools, etc. With this option there are still many Tx excessive retries but 11n works otherwise. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
In response to Georg's above comment, I also tested the options he gives; neither bt_coex_active=0 nor sw_ctypto=1 does anything to help the slow connection. However, `iwconfig wlan0 power off/on` is effectively a work/don't work switch for 11n capability. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
** Tags removed: kernel-da-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Just reporting that I have also had huge problems with the stability of my Wi-Fi connection. The following fixed this so far: sudo modprobe iwlwifi bt_coex_active=0 swcrypto=1 I am still getting excessive amounts of Tx excessive retries, but my connection is fast and stable. My environment: Ubuntu: Precise Kernel: 3.2.0-31 Laptop: Dell Vostro 3460 Wi-FI: Intel Corporation Centrino Wireless-N 2230 (rev c4) Thanks for all the hints! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I went back and did some testing on 3.2.0-30-generic and 3.4.0-030400-generic from the mainline PPA (both AMD64) and my results are the same as I mentioned in #158. With the Linksys e3000, I get very good performance and with the Buffalo WZR-HP-G300NH router, I get unusable performance. Both routers were operating in mixed bgn with mixed WPA/WPA2. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I see that the assignee has been changed to nobody, and the activity on this bug has died down. Is there no hope of this ever getting fixed? My wifi is unacceptably bad on a majority of routers, especially (but not only) public hotspots. Would it help if I put a $20 bounty on the implemented solution to this bug? :-p -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
** Changed in: linux (Ubuntu) Assignee: Tim Gardner (timg-tpi) = (unassigned) ** Changed in: linux (Ubuntu Oneiric) Assignee: Tim Gardner (timg-tpi) = (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
What are the disadvantages of iwlagn 11n_disable=1? 11n should theoretically give you higher throughput and interference. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
For me wireless is working again on 12.10, but I noticed the speed was only about 12MB/s compared to 54MB/s on Windows 7. So i tried iwlagn 11n_disable=1 and it solved the problem, now I have the same speeds as on Windows 7. What are the disadvantages of iwlagn 11n_disable=1? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
nh2, these commits have been merged to mainline for kernel version 3.4.3 (posted to mainline ppa on june 17). I think they have also been merged to the 3.2 branch. Unfortunately they did not help with this bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
@Karl Frisk: Oh, then cgit tricked me somehow, I thought they were just merged yesterday. Sorry for the false alarm. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
This bug affects my laptop with Centrino Ultimate-N 6300 as well. I think I have tried all the workarounds in this thread but the only thing that helped was turning on the swcrypto parameter. My /etc/modprobe.d/iwlwifi.conf now looks like this: options iwlwifi 11n_disable=1 led_mode=1 swcrypto=1 And I can use wifi without problems. However, the fact that n-networks can not be used remains annoying. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
In the Intel bug linked above (http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2315) they posted two new patches about hardware bugs that seem to have gone into the mainline Linux git yesterday. Compile and try, anyone? @zeitkunst You are not alone in your frustration with university networks. Follow the advice above and try wicd. It might work better for you (which I don't understand, because in the end, wicd and network-manager are based on the same tools). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Turning of ipv6 has worked (for at least the last 24 hours or so) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Using options iwlwifi 11n_disable=1 to turn off n networking hasn't worked. It has successfully turned off n (leaving abg), but I still get the deep sleep problem. I'll try turning off IPv6. I've also ordered the following USB adaptor: Edimax EW-7811UN Wireless 802.11b/g/n 150Mbps Nano USB Adaptor which people seem to be using successfully with RaspberryPI. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
My connection no longer constantly drops on a Thinkpad T410 with Intel Corporation Centrino Ultimate-N 6300 (rev 35) wireless running mainline kernel 3.5.0-030500rc6-generic. Before running this kernel version, I could not connect to any of the local networks (all wireless g), but now the connection seems fine. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I'm having the same problem on a Lenovo x201 on a new install of 12.04 today. Previous 11.10 version had the same problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
The bt_coex_active fix not fixing this bug - N speeds persists, but IP is jittering over 800ms - this incompatible whith any real-time protocols. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
** Description changed: This may be either network-manager or kernel, depending on triage... I have verified this on both a Lenovo X201 and a Lenovo T500 laptop. Both work perfectly with fully updated 10.10 and 11.04 versions of Ubuntu. However, booting into a fully updated 11.10 (as of 28/08/11) I get very poor wireless networking performance. Between 6-10% packet loss, very very slow connection and transfer rate. All in all, practically unusable. I have reported the bug on the X201 laptop, I will add the similar logs from the T500 also if required. As soon as I swap back to either 10.10 or 11.04 I get perfect wireless, it's only on 11.10 that I get problems, this would suggest it's not hardware or configuration on my side. I have had this since first installing 11.10 which was a little after Alpha 2. Wired connection is fine. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: network-manager 0.9.0-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3 Uname: Linux 3.0.0-9-generic x86_64 Architecture: amd64 CRDA: Error: [Errno 2] No such file or directory Date: Sun Aug 28 21:26:05 2011 EcryptfsInUse: Yes Gconf: - + IfupdownConfig: - auto lo - iface lo inet loopback + auto lo + iface lo inet loopback InstallationMedia: Ubuntu 11.10 Oneiric Ocelot - Alpha amd64 (20110803.1) IpRoute: - default via 192.168.100.1 dev eth0 proto static - 192.168.100.0/24 dev eth0 proto kernel scope link src 192.168.100.41 + default via 192.168.100.1 dev eth0 proto static + 192.168.100.0/24 dev eth0 proto kernel scope link src 192.168.100.41 Keyfiles: Error: [Errno 2] No such file or directory NetworkManager.state: - [main] - NetworkingEnabled=true - WirelessEnabled=true - WWANEnabled=true - WimaxEnabled=true + [main] + NetworkingEnabled=true + WirelessEnabled=true + WWANEnabled=true + WimaxEnabled=true ProcEnviron: - LANGUAGE=en_GB:en - PATH=(custom, user) - LANG=en_GB.UTF-8 - SHELL=/bin/bash + LANGUAGE=en_GB:en + PATH=(custom, user) + LANG=en_GB.UTF-8 + SHELL=/bin/bash SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
On my machine, I seem to have temporarily stopped this problem, although by the lack of activity on this thread it may be that in more recent kernels the problem is already fixed. lspci shows my wireless card as 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35) I am running Fedora 15 with kernel 2.6.43.8-1. First I downloaded the most recent firmware (9.221.4 ) for the wireless card from here: http://intellinuxwireless.org/?n=downloadsf=ucodes_6000 I unziped and untared the file and put the ucode in /lib/firmware. Then unload the kernel module rmmod iwlwifi and reinsert the module with bt_coex_active=0. modprobe iwlwifi bt_coex_active=0 For me, this lets me connect reliably(well, all morning) to a WPA2 network, which I couldn't do before. It connects at good wireless N bitrates, and seems stable. However, there are still large numbers of Tx excessive retries. Hope this works for someone else. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Re Comment: #225: Ubuntu has the latest firmware versions in the Precise kernel. However, I can confirm that the bt_coex_active fix works for me -- at N speeds with out having to disable N -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I am glad to tell you to see the issue fixed (at least my version of the problem, which concerns to an encrypted wpa2 network on an Corporation Centrino Ultimate-N 6300) on Opensuse 12.2 beta 2. with kernel 3.4.2 output of uname -a: Linux linux-84uj.site 3.4.2-1-desktop #1 SMP PREEMPT Thu Jun 14 17:07:01 UTC 2012 (a3aa67c) x86_64 x86_64 x86_64 GNU/Linux The last kernels which worked for me were 2.x (without any fix) 3.0.x and 3.1x (with the 11n_disable=1 option). I am very happy everything works on my machine. I hope the same for you! Maybe someone could be so kind to test the named kernel or the opensuse iso and report back if it also solves the problem for you? Kind regards -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I would like to add that I have a Lenovo laptop with an Intel Centrino Wireless N (forget the model number) running Ubuntu 12.04 amd64 as well and that laptop does not experience any of the issues that my Samsung laptop faces. This makes me think that the issue might not be just a driver issue alone as this uses the iwlwifi driver as well. It probably is a combination of driver + model. -- Aravind -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
@Paulo, thanks for the suggestion to disable ipv6 in the kernel boot line. I couldn't connect to the router I'm currently on (at my university), but since disabling ipv6 I now can. I also have 11n disabled. The connection seems to occasionally drop, but picks straight back up again. And I no longer have tens of thousands of invalid misc in the iwconfig line. Has anyone else had success with disabling ipv6? Intel 6205, Lenovo x220t. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Aravind, I also have problems with some b/g only routers and I have found two related workarounds that have solved my problems with those specific routers. In these cases the problem is with the IPv6 stack, so the solution is to turn off IPV6. There are two ways to accomplish this: 1) Goto network manager indicator e select Edit connections and in the wireless section select the SSID associated to your router and click Edit. Look for the IPv6 configuration tab and select the option Ignore under Method. You may need to log out and login again. This will tur off IPv6 for that router only. 2) Turn off IPv6 globally. This seems to be achieved with the option ipv6.disable=1 in the boot parameters. It may help you. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
The power management and wireless-n disable changes did not help. Disabling IPv6 seems to have helped. I have still disabled power management and wireless-n though. Thanks pjssilva. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Hi. I have a Samsung laptop with Intel Centrino-N 130 wireless card. My wireless router is a Netgear WGR614v7. It only supports b/g. So, even if I am connecting to a 'g' network, my connection drops almost every minute and I have to disable and enable wireless connections for it to reconnect. I have tried the workarounds suggested - /sbin/iwconfig wlan0 power off and options iwlwifi 11n_disable=1 but both do not work for me. I have not tried both workarounds together though and will try that today. If that fails too, I think that I give a try with ndiswrapper and windows drivers. My question with ndiswrapper would be, how can I be sure that iwlwifi is not loaded and windows drivers are loaded? Do I blacklist iwlwifi? Regards, Aravind -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Have you tried the solutions I report here: - http://cikitsa.blogspot.co.at/2012/03/t500ubuntu-1110-slow-wifi-network.html On 14 June 2012 06:11, Turbo 836...@bugs.launchpad.net wrote: Hi, At first, I wasn't sure when started reading this -very long- post. My daughter's laptop is a Samsung with (also) an Intel Centrino-N 130 wireless card. All this paired with Ubuntu 12.04 x64 full patched several minutes ago. The wireless conection is failing frequently even when she is at less than 5 meters away from the router. Also don't know what to do; Windows is a no go xD ;-) Regards -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Hi, At first, I wasn't sure when started reading this -very long- post. My daughter's laptop is a Samsung with (also) an Intel Centrino-N 130 wireless card. All this paired with Ubuntu 12.04 x64 full patched several minutes ago. The wireless conection is failing frequently even when she is at less than 5 meters away from the router. Also don't know what to do; Windows is a no go xD ;-) Regards -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
The same issue for me, on Thinkpad x220t, Centrino Ultimate-N 6300. Kernels 3.3-3.4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
An unfortunate warning to all Thinkpad owners: Lenovo is whitelisting all of its radio components (supposedly due to FCC regulatory demand), meaning your cannot switch you old Intel wireless adapter that easily without getting a dreaded BIOS error telling you to check on the card (i.e. the system locks up and doesn't boot anymore). The only way around this are BIOS hacks to either disable whitelisting completely or enable each individual card's signature. All in all, for a regular Thinkpad user, exchanging the radio component isn't an option. You have been warned. PS: All the more reason to give Intel shit about this bug still not being fixed.. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
An unfortunate warning to all Thinkpad owners: Lenovo is whitelisting all of its radio components (supposedly due to FCC regulatory demand), meaning your cannot switch you old Intel wireless adapter that easily without getting a dreaded BIOS error telling you to check on the card (i.e. the system locks up and doesn't boot anymore). The only way around this are BIOS hacks to either disable whitelisting completely or enable each individual card's signature. All in all, for a regular Thinkpad user, exchanging the radio component isn't an option. You have been warned. PS: All the more reason to give Intel shit about this bug still not being fixed.. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I am also having the problem described here. I'm using an up-to-date ubuntu 12.04, on a lenovo u300s, with Intel Centrino Wireless-N 1030 (rev 34). I hope someone could help, this is driving me crazy. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I gave up on centrino and bought an atheros PCI express module. SparkLAN 11abgn Atheros AR9382 half size minicard (WPEA-121N) $35 bucks or so. This module is 2x2MIMO dual band, equivalent to centrino 6200 (methinks), not 3x3. Worked out of the box in ubuntu 12.04. 2028 packets transmitted, 2023 received, 0% packet loss, time 2050218ms rtt min/avg/max/mdev = 8.783/11.040/186.043/6.525 ms xbmc@htpc:~$ iwconfig wlan2 IEEE 802.11abgn ESSID: Mode:Managed Frequency:5.18 GHz Access Point: Bit Rate=300 Mb/s Tx-Power=17 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=55/70 Signal level=-55 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:3 Invalid misc:8 Missed beacon:0 Better reception, better Tx power, higher speed (all under the exact same conditions), zero packet loss after thousands of pings, negligible number of Tx retries. Now I am wondering why I bought (and paid more) for intel centrino 6300 in the first place. Atheros seems way better, costs less, and the open source driver has a pretty good reputation (I remember using a very solid madwifi driver a very very long time ago). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I upgraded my HTPC with the top of the line centrino module... Intel Corporation Centrino Advanced-N 6300 I was using 11.04 and seemed to work fine. Then I had the bad idea to update to the latest ubuntu LTS 12.04. only to find out that wifi works really poorly, much worst than the cheap mini-pci module I was using before. After sending 450 pings, this is what I get: Tx excessive retries:2970 Invalid misc:10 Missed beacon:0 on a somewhat decent connection: Mode:Managed Frequency:5.18 GHz Access Point: xxx Bit Rate=243 Mb/s Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=50/70 Signal level=-60 dBm I don't use network-manager in my setup (nor any desktop environment). I do use WPA2. as it doesn't look like anybody is actually working on this issue I'd rather change the chipset. Is there any other mini-PCI module, wireless-n Dual Band, non-Intel, that is known to work properly? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I'm using a thinkpad t410s, I've noticed an improvement by turning power management off: /sbin/iwconfig wlan0 power off If this works for you, put it in a file in /etc/pm/power.d to make it permanent. Disabling wireless n also works, but I have had a stable connection using wireless n with power management off (Intel 6300 card). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Is there anything happening with this bug? I've been suffering with insanely slow WiFi speeds on my ThinkPad X220 for many months now, and I feel as though no progress is being made here. I don't have the skills to fix the bug, but I'm here for testing. To be honest, I'd even pay money to see this bug fixed if it could be done quickly. This but does not just affect N networking, but also G, and so it affects virtually all WiFi connections I use. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I can confirm that Fedora 16 since the 3.3 kernels also affect this bug. I switched to Fedora because it seemed to be uneffected. I am working on a Lenovo X220. Is there a way to downgrade only the kernel in Ubuntu as workaround? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Unfortunately, my solution in comment #203 doesn't work anymore; I now get the dreaded denied authentication (status 17) even on the older kernel mentioned in that comment. This happens on both open networks and those using TTLS with PAP authentication. Is there _any_ known working kernel/module/firmware for this chipset (Centrino 6300)? Older or bleeding edge, I don't care. Not having wireless while on my university campus (because this problem only seems to rear its head when trying to connect to enterprise networks) is not only debilitating from a work point of view, but also embarrassing and professionally problematic. If there is anything to test I'll test it. And while I don't want to disparage the developers working on it, I find it also problematic that so many people are having problems with their wireless (in 2012!) and that this bug still exists. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Zeitkunst, I have a problem with the router of my son's therapist, it uses WEP not PAP. But I managed to solve it by using wicd instead of the network- manager to control the network. Try sudo apt-get install wicd It will install some packages (you don't need to uninstall network- manager). After that disconnect from wirelless network in network- manager, and call wicd. Try to connect with it to you desired network. You'll have to give it the password using the properties button. You may give it a try. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
For me wicd also seems to work much better than Network Manager, thanks for the suggestion. I've now had an N connection running at my university for almost half an hour at speeds between 80 and 120 Mb/s (WPA2 PEAP/MSCHAPV2). Tx excessive retries is, however, in the tens of thousands, but at least the connection is maintaining speed and isn't dropping out (or refusing to connect at all) which is what happens under Network Manager. I had almost resigned myself to using Win 7 exclusively on my laptop for this reason - maybe now I don't have to! Lenovo X220T, Intel Advanced-N 6205, Ubuntu 12.04 (64 bit) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Good. I have no problem to connect to my wifi network but to be sailing there are times when it gets really slow, I fall, but my network gets slow and takes too long to connect, I have to give several times a page in Ubuntu 12.04. http://i.imgur.com/wc2Hz.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Any progress on this bug? Or, any suggestions on how to downgrade (on Oneiric or Precise) to a Natty kernel, since that doesn't appear to have this bug? The bug makes it impossible to do any work on my campus' wireless networks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I can confirm that the latest Natty kernel I was able to find from the Kernel Team PPA (http://kernel.ubuntu.com/~kernel- ppa/mainline/v2.6.38.8-natty/), along with options iwlagn 11n_disable=1, has so far solved my wireless problems on Oneiric 64bit with the following Centrino card: [ 283.518066] iwlagn :02:00.0: Detected Intel(R) Centrino(R) Ultimate-N 6300 AGN, REV=0x74 For good measure, uname -a: Linux x 2.6.38-02063808-generic #201106040910 SMP Sat Jun 4 09:13:01 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux If anyone knows a more recent kernel that doesn't have this bug, please let me know. Otherwise, I'm sticking with it; having working wireless is worth it! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
#200: I see no reason why it shouldn't occur, it's an upstream driver bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Confirmed with Ubuntu 12.04 64bit and Intel Centrino Wireless-N 130. Little hope this bug is going to be fixed...too much time without no interest. Do you know if the issue occurs also in Fedora 16 64bit? Or in the other distributions with the most updated kernels? Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Hi guys, Got Ubuntu 12.04 64 bits, 03:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6200 [8086:4239] (rev 35) 3: phy0: Wireless LANE Soft blocked: no Hard blocked: no Even when set to disabled the n sudo modprobe -r iwlwifi sudo modprobe iwlwifi 11n_disable=1 still having: Tx excessive retries:98 Still growing :( Invalid misc:173 - Still growing :( Confirmed too, is WEP encryption... :( Regards, -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
This plug http://www.amazon.com/gp/product/B003X26PMO/ref=oh_details_o00_s00_i00 with this driver http://152.104.125.41/downloads/downloadsView.aspx?Langid=1PNid=21PFid=48Level=5Conn=4DownTypeID=3GetDown=falseDownloads=true works on my T410i. I now can connect to my n router. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
This bug has been known about since last August and has persisted through two releases. Is it ever going to be fixed or just ignored? Thinkpad X200 dual booting Win 7/Mint 12 and now Ubuntu 12.04. Wireless unusable under Linux unless I set my router to no encryption in which case it works fine. Obviously not a solution. I have even went as far as changing the wireless card using a hacked bios, 5300AGN to a 4985AGN, both Intel but with no change. This needs to be fixed guys! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
On 04/05/12 03:46, arsenix wrote: .Is there any hope of using 802.11n under ubuntu? I make do using my old 802.11g router . I do, having having switched my 'n' router from WEP to WPA encryption - now works fine all round my house ( 'g' works too but doesn't have the range to reach all the dark corners). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Can confirm behaviour and work-around. HP Elitebook 2540p. Xubuntu 12.04 installed. Using the iwlwifi module. Connection with a Netgear wireless access point running b/g absolutely fine Connection to a WHR-G300N router has intermittent pings - and websites etc load slowly. Running: # rmmod iwlwifi # modprobe iwlwifi 11n_disable=1 Gets things back to much more normal - although I feel the network speed is still not 100%. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I can confirm this bug still manifests in Precise identially as it did in 11.10. Is there any hope of using 802.11n under ubuntu? I make do using my old 802.11g router and many others are up and running by disabling 802.11n but this is really just a bandaid for what seems to be a larger issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
indeed, it works! thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
thinkpad e420s with intel centrino n-1000: seems that the same problem persists with 12.04; what's weird though is that I had fixed this on 11.10 disabling N-connections, and while I was able to do the same with 12.04, every time I reboot the connection turns terribly slow again. change to WPA is not a very comfortable option, as I use different networks. D'accord with #188: WHY is there still no patch! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Ubuntu people can't write the patch for you - report upstream at Intel (see the auto-bugzilla.intellinuxwireless.org #2315 link above, there are only 3 people CC'd in their bugzilla compared to 140 here). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
ok, did this. anyways, in 11.10 it was possible to unable n-connnection by echo options iwlagn 11n_disable=1 | sudo tee /etc/modprobe.d/iwlagn.conf with 12.04, I have to enter this command every time I restart. don't know if this belongs in a bugreport, though. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Changing from 11.10 to 12.04, I've had success in regaining wireless speed by changing options iwlagn 11n_disable=1 to options iwlwifi 11n_disable=1 Best, DW On 27 April 2012 20:33, b. eskararr...@yahoo.de wrote: options iwlagn 11n_disable=1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
this bug is so old, why is there still no patch? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I just found out that setting my acces-point to WPA-PSK makes stuff work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
For people seeing better behavior after changing to WPA-PSK. I was having the same problem in my system in the wating room of my son's therapyst (which we visit twice a week). The router is configured to use WEP and the connection would drop almost immediately. For obvious reasons I can not change the router configuration (even though I should take the time to explain to them how insecure is WEP). I found out searching for possile solutions on the net that adding the option ipv6.disable=1 to my boot line works. Give it a try. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Hi, me too IBM Thinkpad X201i When I disable 802.11n I am able to connect and surf. When N is enabled I can associate with the AP but I have no DNS resolution. Joey -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Steven, the adapter I am using was bought in the 'Value Range' by a UK supplier (CCLOnline.com) but they explicitly state the 'Value' items are not manufacturer specific/may change. I did find on ebay 'Tenda Mini 54m Wireless USB Adapter W541U V2.0' which looks about right. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Playing around based on #173 I changed my hub from WEP (64bit) to WPA/WPA2 (PSK) and it works - IT WORKS, IT WORKS So we are left with 11.04: WEP (64 bit key) = Good, WPA/2 = Good 12.04: WEP (64 bit key) = V Bad (worse than dial-up speeds), WPA/2 = Good (flat-line 9Mb/s, as per my ADSL limit) Obviously I haven't fixed the underlying bug, but I hope this pointer helps developers and offers a useful work-around for some. ps 12.04 = Good. Me happy. Thank you. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Follow-up on my own comment, #171: It seems that the problem is improved, but not actually fixed as I had said before. There is a definite improvement though. There are still plenty of networks on which I experience problems and slowness. Rebooting my machine brings back higher speeds for a while, until another reboot may be necessary, only on some netwroks. The WiFi activity light flashes constantly, even when I'm not doing anything. This bug is unreal. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Also, can someone link to an amazon.com product page or some place to buy the USB networking adapter that works perfectly? I can't find it based on the information provided so far. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
#176 - Yes, as per my post #37 last October. I am still having to run 11.04 if I use the built-in Intel N-1000 hardware, (or boot 12.04 with USB Raylink, which works great). Note the N-1000 works fine on G only routers, but I need N turned on to get coverage around my house. Sorry I can't fix it - but hope and hope that someone can. 12.04 is brill else. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Doug: Thanks for the comment noting that the USB Raylink works. It might be interesting to know any other USB units that work, as a temporary way for some people to get up and running. In my case, I am purchasing multiple (10-20) units for a school. Some of the Raylink models sell for $6-10. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Robert, my comment above was a bit vague (Raylink make a number of models) so to clarify #178 lsusb reports: Bus 001 Device 003: ID 148f:2070 Ralink Technology, Corp. RT2070 Wireless Adapter And on the box: W541U v2.0 Working fine on 12.04 as I write this (but I have to select 'disconnect' my other internal wireless device in the on-screen network notifier else I still get a rubbish connection). Cheers. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Hardware: Lenovo X220, Wifi: Intel Centrino Advanced-N 6205 AGN Software: Ubuntu 11.04, problem on both 2.6.38 and 3.1.1 kernels I want to confirm this problem on my hardware: Around 10% packet loss with packets lost around every 5 seconds (easily observable in e.g. ping's icmp_req counter jumping 5 numbers) in n-Wifi. Web browsing is also noticeable delayed. Using 11n_disable fixes it. However, the reduced throughput and channel width are not nice. I'm running this in a g+n network limited to the 2.4 GHz band. Can somebody try if we have the same problem in 5-GHz-only wifis? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
As per #172: With the newest kernels you are completely out of luck! Also, This issue has to do with many components, it's not only the kernel seems a correct observation. I have this connection problem with an ASUS netbook 1016PT, ---network card Intel Centrino Anvanced-N 6200. I can connect and see all the routers in the neighborhood, but no internet service and no authentication. This is in a room with 25 other laptops and netbooks all working fine. The above patches do not work in my case. I have Kubuntu 12.04 running on other wireless machines, but not the Intel Advanced-N netbook. At this point I am looking for a novel solution. For example, I have read that Kubuntu 11.04 worked. I am downloading it, and will try it. It seems that wireless devices are being used everywhere at this point. It is sad that we have to struggle with this issue on so many machines. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
UNREAL! Kubuntu 11.04 works instantly, out of the box with the ASUS netbook 1016PT, network card Intel Centrino Advanced-N 6200. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
#173 is not completly true, 802.1X don't work to... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
lunixhacker is right in my case, too. X201 with an Ultimate-N 6300. Running Kernel 3.2.0-22 (64-bit)/12.04(Beta2). Same symptoms, on boot wireless works for a few moments, then goes down to 1Mb/s until, ultimately, the connection drops and re-connects into the same cycle. Workaround from #164 does not work with this build. Again, issue only occurs with UNencrypted connections. WPA/WPA2 n-connections work fine. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I'm talking about an Intel Corporation Centrino Ultimate-N 6300 This problem is very strange. I have played around with this problem weeks and weeks and have no solution. The work around of comment #164 works for me with Kernel 3.0.26 and 3.1.0-1.2 but not with newer kernels as 3.3. This issue has to do with many components, it's not only the kernel! Kernel 3.0.8 worked for me out of the box with a distribution consisting of older software components (Networkmanager 0.8x). Now I'm on Opensuse 12.1. Because Kernel 3.0.8 worked for me so well i decided to compile it for Opensuse. Same problem here, no chance to get into the internet. The mentioned fix works. It is exactly the same kernel, as in the older distribution! Although in the older with other software components it works, but not on the one with newer software components (as Networkmanager 0.9x). With the newest kernels you are completely out of luck! Comment #156 is also true for me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I am running 12.04 on a HP EliteBook 8440p with Centrino Ultimate-N 6300 and have the same problem. Disabling N using Mirek's hack above has worked for me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I am trying to apply Mirek's trick in post # 164, but I'm curious if iwlagn is the same thing as iwlwifi? My wifi driver is listed as iwlwifi. Should I modify the .conf file somehow? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
iwlwifi is a completely different driver than the iwlagn driver. You might be experiencing a completely different bug. What network adapter are you using? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
My adapter is the Intel Centrino Wireless N-1000 in a ThinkPad X220. I filed a separate report, and someone marked it as a duplicate of this one. My report is here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/939218 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Try the walkaround using your driver: sudo rmmod iwlwifi sudo modprobe iwlwifi 11n_disable=1 echo options iwlwifi 11n_disable=1 | sudo tee -a /etc/modprobe.d/disable-n.conf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
The following workaround has solved my issue on my ThinkPad X220 with Intel Centrino Wireless-N 1000 card using iwlwifi driver (except, of course, that I don't have N wireless capabilities now): 1) Create a file at /etc/modprobe.d/intel_11n_disable.conf containing this one line: options iwlwifi 11n_disable=1 2) Run this command: sudo update-initramfs -u 3) Reboot Maybe others with the iwlwifi driver should try doing this. Notice how it's the same fix others have mentioned with the iwlagn driver, except that iwlagn was replaced by iwlwifi in the config file. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
** Tags added: kernel-wifi -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
It seems that on my ThinkPad X220 with the Centrino Wireless N-1000 and kernel 3.2.5, WiFi gets worse over time. Sometimes rebooting my machine speeds it back up until it crawls to a hlat over time again. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I can confirm this bug - Ubuntu 11.10 64bit. I'm using wifi card Intel centrino advanced-n 6230 and the connection is VERY slow. When I try any other wifi card with another chipset, it works fine (Atheros, Broadcom..). This hack works for me: Create a file /etc/modprobe.d/intel_11n_disable.conf containing : options iwlagn 11n_disable=1 sudo update-initramfs -u reboot or sudo modprobe -r iwlagn sudo modprobe iwlagn Can we expect any patch for 11.10? Thanks a lot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
@Roy, don't think it's that, I (and others) have the same problem on an Ultimate-N 6205, which is a 2x2 adapter -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
This could be a complete red herring, but on the off chance that it's useful info: I'm seeing this issue on an Ultimate-N 6300 in a two-antenna laptop (with only antenna terminals 1 and 2 connected). This configuration works fine under Windows, but causes high packet loss under Linux Mint 12. Could the issue possibly be caused by only using two antennas on a 3-antenna card? It's tempting to speculate that maybe the Windows drivers correctly detect this configuration, but the Linux drivers attempt to use all three antennas. I wonder if any commercial laptop manufacturers configure three-antenna cards with two antennas? I may try to see if I can install a third antenna in the laptop, either temporarily or permanently and report back. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Some problem with the intel iwl4965 driver. It occured with one of the last updates. Disabling N with sudo modprobe iwl4965 11n_disable=1 solves the problem. I don't even have an N-capable router. lshw reports: configuration: broadcast=yes driver=iwl4965 driverversion=3.0.0-16-generic firmware=228.61.2.24 ip=192.168.1.128 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Hi guys. I have a different wireless card: Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE Running Linux alia 3.0.0-16-generic-pae #28-Ubuntu SMP Fri Jan 27 19:24:01 UTC 2012 i686 i686 i386 GNU/Linux And I came across this thread because I have a ThinkPad x220i, and my wireless had similar problems, with both WPA and unsecured maxing out at about 400kb/sec when I should have gotten about 2mb/sec. So I tried the second fix at http://www.hitxp.com/articles/software/ubuntu-fix-slow-wireless-internet-connection-speed-upgrading-11-04-natty-narwhal/ And my WPA is now at full speed. Since this bug is not related to a wireless driver I thought that you guys should give this a try too if you haven't already. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
After upgrading to kernel 3.0.0.16 I am able to connect my laptop at 150Mbps using iwlagn and my desktop at 300Mbps using rt2800pci. Both speeds were not possible before kernel update. The problem now is that my laptop connects in g speed (54Mbps) after waking up from suspend. Have to reboot my access point or set it to N only to get back to N speed of 150Mbps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I also have an Intel Corporation Centrino Ultimate-N 6300 card in my laptop. I tried everything, but no solution. Kernel 3.0 worked while I have the problem since 3.1. Today I noticed something important: All the problems only appear with encrypted wifi. I noticed that, because I came across a free hot spot, and there it worked perfectly! If I am at home I can access to my WPA2 encrypted wifi, but I can't access to any webpage, which means I have no access to internet. This problems seems to be an encryption problem. (WPA for sure, I haven't tested any WEP wifi). All solutions I tried didn't work. I'm talking about kernels offered by archlinux. I tried orneiric on the live-cd version and there everything worked. Ubuntu 12.04 doesn't work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
@ Comment # 156: It's very strange you say that. With my Intel Centrino Wireless N-1000 card in my ThinkPad X220, I only see this problem on UNencrypted networks, and never on encrypted ones (though I have only tried a few encrypted networks). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
The variability of this problem is wicked.On a whim, I swapped out my Atheros AR9132-based AP for a Broadcom based Linksys E3000 and my N performance is much better now. It's still not as good as it should be, but it's usuable now at least. x220 with Centrino Wireless N-1000. 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:44:39 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
On a fresh installation of the daily ubuntu precise (actually yesterday) I got the same problem with an Intel Centrino N 1030. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Similar problem here with a netbook with Intel Centrino-N 130 and kernel 3.2.6-2 (Arch). Tried with both NetworkManager and Wicd. However, the problem disappears with: sudo rmmod iwlwifi sudo modprobe iwlwifi -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Following the flurry of happy people above I tried 12.04 Daily Build (64 bit / 15Feb) again on my Atom 450 / Centrino -Wireless N1000 netbook and still minimal connectivity (10s -100s B/s). However using a Raylink RT 2070 usb dongle (148f:2070) I get 800+kB/s just fine. I didn't try backports, just daily build / updates.thanks for your efforts. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Unfortunately, after a couple of days of testing, I cannot confirm that the latest release of the backported modules fixes the issues described in this report concerning the Advanced-N 6205 AGN. At best, and that is without proper testing .. just a hunch, it went from unusable to marginally better, yet still unusable. Back to using cables :( -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
I have Centrino Wireless-N 1000 (8086:0084) and using linux-backports- modules-cw- (and the iwlwifi module) and the performance has not changed. It might even be worse :( -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Probably I'll never understand these ubuntu kernel packages and how they relate. If I take a look at the changelog of yesterdays updates to my machine via 'apt-get changelog linux-image-generic' you can see the changelog entry which caught my attention: linux-meta (3.0.0.16.19) oneiric-proposed; urgency=low [ Leann Ogasawara ] * Add compat-wireless v3.2 meta package - LP: #918351 As I look at it now I noticed that the changelog actually belongs to a package called linux-meta: http://www.ubuntuupdates.org/package/canonical_kernel_team/oneiric/main/base/linux-meta From the description: This package is just an umbrella for a group of other packages, it has no description. Description samples from packages in group: -Backported wireless drivers for generic kernel image ... This probably explains why I got the backported drivers although I have NOT installed linux-backports-cw or any other backports. I checked it with 'dpkg -l |grep backport'. Probably worth to say is that I have installed linux-firmware which is mentioned in the compat-wireless package. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Installed the linux-backports-modules-cw- package matching my kernel. Made no difference... I can still reproduce Bug 919579 with a 100% success rate. Perhaps it's hardware dependant? Olaf mentioned a Ultimate-N 6300 AGN, rkrizan Intel WiFi Link 5100 Intel Pro 4965AGN. I have a Centrino Wireless-N 1030. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 836250] Re: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops
Today I have good news. The problem seems to be fixed for me. I'm running Oneiric on a Thinkpad T520 with a Ultimate-N 6300 AGN wireless chipset. Today I got the ubuntu update notification announcing a new kernel to be installed. As I reviewed the changelog I noticed that the kernel was updated to include the latest compat-wireless: https://bugs.launchpad.net/ubuntu/+source/linux-backports- modules-2.6.32/+bug/918351 I gave it a shot, so before booting into the new kernel I removed the workaround mentioned in post #42 which simply disabled 11n mode. After reboot Network-Manager connection information showed me a connection in 11n mode at 270 Mbs (router was like 5 m from me). I tested by uploading a video file of 1.3 GB to my NAS. It was transferred at an average speed of 9.6 MB/s. After the transfer I checked the output of ifconfig stating no errors or dropped packages for wlan0. BINGO! Guys I hope that will work for all of you, too. Just try it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
