[Kernel-packages] [Bug 1289961] Re: Power management causes Intel wifi 7260 slowness
Apport collect to follow. I did 8 measures of wifi speed (quite far from my router 2.4 GHz WPA2 AES) with and without PM. I removed the best and the worst : mean PM on : 418 ko/s mean PM off : 562 ko/s Sure it is much better than before (when I opened this bug) but not as much as it should. Additionnally, there is still a speed issue, PM on or off, since I get ~900 ko/s with another laptop running Intel 6235 card an using the same number of antennas. -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) --- ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: ft 1884 F pulseaudio /dev/snd/controlC0: ft 1884 F pulseaudio DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=54b265b9-4433-42d4-8d0f-fac028ee7030 InstallationDate: Installed on 2014-03-05 (46 days ago) InstallationMedia: Ubuntu-GNOME 14.04 Trusty Tahr - Alpha amd64 (20140226) Lsusb: Bus 001 Device 002: ID 8087:8000 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20AQCTO1WW Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=b1cbc034-b66f-4f6c-9d61-507b8cb23ffe ro quiet ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.13.0-24-generic N/A linux-backports-modules-3.13.0-24-generic N/A linux-firmware 1.127 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: trusty Uname: Linux 3.13.0-24-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 03/28/2014 dmi.bios.vendor:
[Kernel-packages] [Bug 1289961] Re: Power management causes Intel wifi 7260 slowness
apport information ** Tags added: apport-collected ** Description changed: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) + --- + ApportVersion: 2.14.1-0ubuntu3 + Architecture: amd64 + AudioDevicesInUse: + USERPID ACCESS COMMAND + /dev/snd/controlC1: ft 1884 F pulseaudio + /dev/snd/controlC0: ft 1884 F pulseaudio + DistroRelease: Ubuntu 14.04 + HibernationDevice: RESUME=UUID=54b265b9-4433-42d4-8d0f-fac028ee7030 + InstallationDate: Installed on 2014-03-05 (46 days ago) + InstallationMedia: Ubuntu-GNOME 14.04 Trusty Tahr - Alpha amd64 (20140226) + Lsusb: + Bus 001 Device 002: ID 8087:8000 Intel Corp. + Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + MachineType: LENOVO 20AQCTO1WW + Package: linux (not installed) + ProcEnviron: + TERM=xterm + PATH=(custom, no user) + LANG=fr_FR.UTF-8 + SHELL=/bin/bash + ProcFB: 0 inteldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=b1cbc034-b66f-4f6c-9d61-507b8cb23ffe ro quiet + ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 + PulseList: + Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied + No PulseAudio daemon running, or not running as session daemon. + RelatedPackageVersions: + linux-restricted-modules-3.13.0-24-generic N/A + linux-backports-modules-3.13.0-24-generic N/A + linux-firmware 1.127 + RfKill: + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no + Tags: trusty + Uname: Linux 3.13.0-24-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: + + _MarkForUpload: True + dmi.bios.date: 03/28/2014 + dmi.bios.vendor: LENOVO + dmi.bios.version: GJET75WW (2.25 ) + dmi.board.asset.tag: Not Available + dmi.board.name: 20AQCTO1WW + dmi.board.vendor: LENOVO + dmi.board.version: 0B98405 STD + dmi.chassis.asset.tag: No Asset Information + dmi.chassis.type: 10 + dmi.chassis.vendor: LENOVO + dmi.chassis.version: Not Available + dmi.modalias: dmi:bvnLENOVO:bvrGJET75WW(2.25):bd03/28/2014:svnLENOVO:pn20AQCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20AQCTO1WW:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: + dmi.product.name: 20AQCTO1WW + dmi.product.version: ThinkPad T440s + dmi.sys.vendor: LENOVO ** Attachment added: AlsaInfo.txt
[Kernel-packages] [Bug 1289961] Re: Power management causes Intel wifi 7260 slowness
Francois Thirioux, could you please test the latest mainline kernel via http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc2-trusty/ and advise to the results? ** Tags removed: needs-apport-collect ** Tags added: latest-bios-2.25 ** Description changed: - I get a new ThinkPad T440s with Intel 7260 ac wireless. + In Ubuntu Trusty (Gnome) with my ThinkPad T440s using Intel 7260 ac + wireless the download speed reaches an upper limit 400 kB/s instead of + the normal 1500 kB/s I get with some other PC connected to my network. + The speed often slows down very very low, especially when I'm far away + from my AP. Removing N mode does not solve the issue. - The dowload speed reachs an upper limit 400 kB/s instead of the normal - 1500 kB/s I get with some other PC connected to my network. The speed - often slows down very very low, especially when I'm far away from my AP. + WORKAROUND: Remove wireless interface's power management via Powertop - I use Ubuntu Trusty (Gnome) up-to-date. - - Removing N mode does not solve the issue. So I tried removing the - wireless interface's power management in Powertop and it did solve the - slowness issue. (iwconfig shows Power management : off in this case, - obviously.) - - - lspci - - 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) - - lshw* - - *-network - description: Interface réseau sans fil - produit: Wireless 7260 - fabriquant: Intel Corporation - identifiant matériel: 0 - information bus: pci@:03:00.0 - nom logique: wlan0 - version: 83 - numéro de série: xxx - bits: 64 bits - horloge: 33MHz - fonctionnalités: bus_master cap_list ethernet physical wireless - configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn - ressources: irq:61 mémoire:f040-f0401fff - - iwconfig*** - - wlan0 IEEE 802.11abgn ESSID:Livebox - Mode:Managed Frequency:2.437 GHz Access Point: xxx - Bit Rate=130 Mb/s Tx-Power=16 dBm - Retry long limit:7 RTS thr:off Fragment thr:off - Power Management:on - Link Quality=60/70 Signal level=-50 dBm - Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 - Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 - - ifconfig** - - wlan0 Link encap:Ethernet HWaddr xxx - inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 - adr inet6:xxx/64 Scope:Lien - UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 - Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 - TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 - collisions:0 lg file transmission:1000 - Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) - --- + --- ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: - USERPID ACCESS COMMAND - /dev/snd/controlC1: ft 1884 F pulseaudio - /dev/snd/controlC0: ft 1884 F pulseaudio + USERPID ACCESS COMMAND + /dev/snd/controlC1: ft 1884 F pulseaudio + /dev/snd/controlC0: ft 1884 F pulseaudio DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=54b265b9-4433-42d4-8d0f-fac028ee7030 InstallationDate: Installed on 2014-03-05 (46 days ago) InstallationMedia: Ubuntu-GNOME 14.04 Trusty Tahr - Alpha amd64 (20140226) Lsusb: - Bus 001 Device 002: ID 8087:8000 Intel Corp. - Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub - Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub - Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 001 Device 002: ID 8087:8000 Intel Corp. + Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20AQCTO1WW Package: linux (not installed) ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=fr_FR.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=fr_FR.UTF-8 + SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=b1cbc034-b66f-4f6c-9d61-507b8cb23ffe ro quiet ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 PulseList: - Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied - No PulseAudio daemon running, or not running as session daemon. + Error: command ['pacmd', 'list'] failed
[Kernel-packages] [Bug 1289961] Re: Power management causes Intel wifi 7260 slowness
Francois Thirioux, could you please execute the following at a terminal: apport-collect 1289961 ** 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
** Tags removed: iwlwifi ** Tags added: needs-apport-collect -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
This seems to be fixed now. I am running with n mode and power saving with no problems as of latest 14.04, more specifically: jschopp@p55t:~$ uname -a Linux p55t 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
I also have this on the latest Trusty nightly. Turning off PM fixes it. I have a 50/10Mbit connection here, and I start at 20Mbit and quickly fall all the way to ~2Mbit. This is over multiple sequential download (e.g apt-get upgrade). This is even worse if you are connected over a mobile hotspot, for instance an iPhone personal hostspot. I get one webpage to load in that case, but the DNS packets and MBDN end up putting the link into a very slow state, ~20Kbps or less. Turning off PM and blacklisting it, I can constantly pull the 50/10. I have yet to test the hostspot fix, I will be able to tomorrow. Also, I noticed that with PM on (and even off but less so) , there was very very high excessive TX retry (48k in 20 minutes) and the computer is bouncing between two channels broadcasting the same BSSID (Apple Airport Extreme multi-ap network), -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
Confirmed, it also fixes connecting the iPhone/iPad hotspot. Having dealt with MAcs in WLAN enterprise networks before, I know when they start flapping in and out of powersave, things break, so this makese sense if the laptop was triggering that conditition through its powersave issue -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
Also worth noting this related bug with the same wifi adapter: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961 -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
Managed to get the wifi stable by disabling n and power savings. sudo vi /etc/modprobe.d/iwlwifi-disable11n.conf Add this line: options iwlwifi 11n_disable=1 powertop to set Wireless Power Saving for interface wlan0 off uname -a Linux p55t 3.13.0-20-generic #42-Ubuntu SMP Fri Mar 28 09:56:33 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Some info from lspci (after the above config changes): 02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73) Subsystem: Intel Corporation Wireless-N 7260 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast TAbort- TAbort- MAbort- SERR- PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 59 Region 0: Memory at f7d0 (64-bit, non-prefetchable) [size=8K] Capabilities: [c8] Power Management version 3 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: fee0800c Data: 41b1 Capabilities: [40] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s 512ns, L1 unlimited ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr+ NoSnoop+ FLReset- MaxPayload 128 bytes, MaxReadReq 128 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s 4us, L1 32us ClockPM+ Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR+, OBFF Via WAKE# DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis- Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1- EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest- Capabilities: [100 v1] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr- CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn- Capabilities: [140 v1] Device Serial Number fc-f8-ae-ff-ff-58-32-b1 Capabilities: [14c v1] Latency Tolerance Reporting Max snoop latency: 3145728ns Max no snoop latency: 3145728ns Capabilities: [154 v1] Vendor Specific Information: ID=cafe Rev=1 Len=014 ? Kernel driver in use: iwlwifi -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff
[Kernel-packages] [Bug 1289961] Re: Power management causes Intel wifi 7260 slowness
I kept BGN mode for my router. With latest : 3.13.0-20-generic #42-Ubuntu I get max speed with PM off (somewhat far from my router) and half of it when PM is on. So it is much better but the title of this bug remains open. The iwlwifi/mac changes in 3.13.7 seem to partially work ? I noticed that my other laptops (1 with saucy, 1 with precise -- saucy or raring kernel--) do *not* have PM turned on, without any tweak. Running trusty, PM is by default turned on. -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
same same on lenovo thinkpad yoga. Less (maybe no) problems when turning wifi-router to g-only mode (no n-mode). -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
kubuntu trusty, linux 3.13.0-19-generic -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
Still occurs running new 3.13.7 ubuntu kernel (containing some iwlwifi/mac stuff). -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
I can confirm this bug. I've got a Lenovo Yoga 2 Pro. Ubuntu 12.04.4 3.11.0-15-generic iwlwifi firmware 22.0.7.0 power management enabled: 90 Mbps (that is my max possible internet speed, haven't tried any local file transfers tough maybe it is even faster) power management disabled: 90 Mbps -- PM does not seem to have an effect on the wifi speed but the connection isn't stable at all. It reconnect aproximately ever 2 minutes. Ubuntu 14.04 3.13.0.-17-generic iwlwifi firmware 22.24.8.0 power management enabled: 4-24 Mbps (- signal strength changes) power management disabled: 32 Mbps (- signal strength seems to be always good) -- Here I don't have any disconnects and PM has an influence but additionally the speed is generally a lot slower. 3.14.0-031400rc6-generic firmware 22.24.8.0 -- I cannot notice different behavior compared to previous kernel, at least no noteworthy differences -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
** 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
I add that the connection runs at max speed at the beginning of data transfer. After some dozens of seconds of data transfer the speed slows down (e.g. where I am connected at the moment, with PM=on, it went from 1200 ko/s to 360 ko/s when running internet speed tests). -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
Did this issue also happen in prior releases, or is this new in Trusty? -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
I did not test another release on this laptop, only Trusty with 3.13 and 3.14rc6 kernels. A lot of people in forums complain about 7260 wifi card (disconnections, slowness, choppy connection, bad range...), not only using Linux. Maybe is it just firmware-related ? -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Confirmed Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.14 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/v3.14-rc6-trusty/ ** Package changed: linux-firmware (Ubuntu) = linux (Ubuntu) ** Changed in: linux (Ubuntu) Importance: Undecided = Medium ** Changed in: linux (Ubuntu) Status: New = Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
** Tags added: kernel-bug-exists-upstream -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
Ok. The latest 3.14 kernel speeds up my wifi connection but does not reach the best value : downloading far away from my router a file on a local-network hard drive : - 3.13 with wifi power management : 60 ko/s - 3.13 without PM : 360 ko/s - 3.14 without PM : 500 ko/s - saucy kernel on X220 (6230 intel wifi card) : 950 ko/s So it seems to me that enabling PM makes wifi speed much better but by far not as it should be. Thanks. -- 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/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289961/+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 1289961] Re: Power management causes Intel wifi 7260 slowness
** Package changed: ubuntu = linux-firmware (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1289961 Title: Power management causes Intel wifi 7260 slowness Status in “linux-firmware” package in Ubuntu: New Bug description: I get a new ThinkPad T440s with Intel 7260 ac wireless. The dowload speed reachs an upper limit 400 kB/s instead of the normal 1500 kB/s I get with some other PC connected to my network. The speed often slows down very very low, especially when I'm far away from my AP. I use Ubuntu Trusty (Gnome) up-to-date. Removing N mode does not solve the issue. So I tried removing the wireless interface's power management in Powertop and it did solve the slowness issue. (iwconfig shows Power management : off in this case, obviously.) lspci 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83) lshw* *-network description: Interface réseau sans fil produit: Wireless 7260 fabriquant: Intel Corporation identifiant matériel: 0 information bus: pci@:03:00.0 nom logique: wlan0 version: 83 numéro de série: xxx bits: 64 bits horloge: 33MHz fonctionnalités: bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-16-generic firmware=22.24.8.0 ip=192.168.1.21 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn ressources: irq:61 mémoire:f040-f0401fff iwconfig*** wlan0 IEEE 802.11abgn ESSID:Livebox Mode:Managed Frequency:2.437 GHz Access Point: xxx Bit Rate=130 Mb/s Tx-Power=16 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=60/70 Signal level=-50 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:2549 Invalid misc:273 Missed beacon:0 ifconfig** wlan0 Link encap:Ethernet HWaddr xxx inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0 adr inet6:xxx/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:30450 erreurs:0 :0 overruns:0 frame:0 TX packets:18296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:41761779 (41.7 MB) Octets transmis:1992389 (1.9 MB) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1289961/+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
