[Kernel-packages] [Bug 1626283] Re: lenovo t420s very slow wifi after dist upgrade 14-16
sorry - The config above is not working as well. I mean - it is unstable - it may give 35 MBit/s or 0.5 MBit/s. No relation with '11n_disable' setting found. I tried several kernels - 4.4.10 - but haven't been able to find stable working one - so the question is still open -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1626283 Title: lenovo t420s very slow wifi after dist upgrade 14-16 Status in linux package in Ubuntu: Confirmed Bug description: it is not more than 2 mbit\s for the moment - before upgrade it works well - about 40-50 mbit\s. it is not ISP issue other devices works fast at my wifi network ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.16 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Thu Sep 22 00:29:18 2016 InstallationDate: Installed on 2015-12-17 (279 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: Upgraded to xenial on 2016-08-17 (35 days ago) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626283/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1626283] Re: lenovo t420s very slow wifi after dist upgrade 14-16
As I managed to solve the problem before and after updates I started using latest kernel where the problem reveals again, I put my working config here First - this one - sudo vim /etc/modprobe.d/iwlwifi-disable11n.conf having this one inside - options iwlwifi 11n_disable=0 is not affecting the wi-fi speed Secondly, I've installed 3.19 kernel - and it works for me GRUB config 1. Using grub-customizer, I've put 3.19 entry on top of menu list, to have it being run with just one 'enter' key 2. I've put here - sudo gedit /etc/default/grub the following - GRUB_DEFAULT="Ubuntu, with Linux 3.19.0-66-generic" the speed is good - about 36 MBit/second for upload/download both Hope it will help someone Note, that the latest (4.4.23 kernel) have buggy slow wi-fi driver(0.5, 2 MBit/second) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1626283 Title: lenovo t420s very slow wifi after dist upgrade 14-16 Status in linux package in Ubuntu: Confirmed Bug description: it is not more than 2 mbit\s for the moment - before upgrade it works well - about 40-50 mbit\s. it is not ISP issue other devices works fast at my wifi network ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.16 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Thu Sep 22 00:29:18 2016 InstallationDate: Installed on 2015-12-17 (279 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: Upgraded to xenial on 2016-08-17 (35 days ago) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626283/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1626283] Re: lenovo t420s very slow wifi after dist upgrade 14-16
it is happening again - no idea on how to solve it -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1626283 Title: lenovo t420s very slow wifi after dist upgrade 14-16 Status in linux package in Ubuntu: Confirmed Bug description: it is not more than 2 mbit\s for the moment - before upgrade it works well - about 40-50 mbit\s. it is not ISP issue other devices works fast at my wifi network ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.16 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Thu Sep 22 00:29:18 2016 InstallationDate: Installed on 2015-12-17 (279 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: Upgraded to xenial on 2016-08-17 (35 days ago) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626283/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1626283] Re: lenovo t420s very slow wifi after dist upgrade 14-16
now it is about 23 mbit\s, but actually my wifi signal is about 100 mbit\s and my IPAD gets about 80 \ 100 (download\upload). I consider that fix as good but there is a room for an improvement ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1626283 Title: lenovo t420s very slow wifi after dist upgrade 14-16 Status in linux package in Ubuntu: Confirmed Bug description: it is not more than 2 mbit\s for the moment - before upgrade it works well - about 40-50 mbit\s. it is not ISP issue other devices works fast at my wifi network ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.16 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Thu Sep 22 00:29:18 2016 InstallationDate: Installed on 2015-12-17 (279 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: Upgraded to xenial on 2016-08-17 (35 days ago) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626283/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1626283] Re: lenovo t420s very slow wifi after dist upgrade 14-16
Would it be possible for you to test the latest upstream stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.4 stable kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.23 ** Changed in: linux (Ubuntu) Importance: Critical => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1626283 Title: lenovo t420s very slow wifi after dist upgrade 14-16 Status in linux package in Ubuntu: Incomplete Bug description: it is not more than 2 mbit\s for the moment - before upgrade it works well - about 40-50 mbit\s. it is not ISP issue other devices works fast at my wifi network ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.16 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Thu Sep 22 00:29:18 2016 InstallationDate: Installed on 2015-12-17 (279 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: Upgraded to xenial on 2016-08-17 (35 days ago) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626283/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1626283] Re: lenovo t420s very slow wifi after dist upgrade 14-16
** Changed in: linux (Ubuntu) Importance: Undecided => Critical -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1626283 Title: lenovo t420s very slow wifi after dist upgrade 14-16 Status in linux package in Ubuntu: Confirmed Bug description: it is not more than 2 mbit\s for the moment - before upgrade it works well - about 40-50 mbit\s. it is not ISP issue other devices works fast at my wifi network ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.16 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Thu Sep 22 00:29:18 2016 InstallationDate: Installed on 2015-12-17 (279 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: Upgraded to xenial on 2016-08-17 (35 days ago) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626283/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1626283] Re: lenovo t420s very slow wifi after dist upgrade 14-16
** Package changed: ubuntu-release-upgrader (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1626283 Title: lenovo t420s very slow wifi after dist upgrade 14-16 Status in linux package in Ubuntu: Confirmed Bug description: it is not more than 2 mbit\s for the moment - before upgrade it works well - about 40-50 mbit\s. it is not ISP issue other devices works fast at my wifi network ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.16 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Thu Sep 22 00:29:18 2016 InstallationDate: Installed on 2015-12-17 (279 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: Upgraded to xenial on 2016-08-17 (35 days ago) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626283/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
