[Kernel-packages] [Bug 1289961] Re: 8086:08b2 [Lenovo ThinkPad T440s] Power management causes Intel wifi 7260 slowness
I can confirm on the latest released packages its still a problem. A package actually rolled back my hook blacklist and now finally my wifi is stable again -- 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: 8086:08b2 [Lenovo ThinkPad T440s] Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: 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. WORKAROUND: Remove wireless interface's power management via Powertop --- 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 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: 8086:08b2 [Lenovo ThinkPad T440s] Power management causes Intel wifi 7260 slowness
Chris, I didn't have this chipset prior to Trusty. Do you want PM on or off for that ubuntu-bug run -- 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: 8086:08b2 [Lenovo ThinkPad T440s] Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: 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. WORKAROUND: Remove wireless interface's power management via Powertop --- 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 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 1319791] [NEW] Apport for 1289961
Public bug reported: Apport requested in Bug 1289961 Description:Ubuntu 14.04 LTS Release:14.04 linux-generic: Installed: 3.13.0.24.29 Candidate: 3.13.0.24.29 Version table: *** 3.13.0.24.29 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages 100 /var/lib/dpkg/status 3.13.0.24.28 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages linux-firmware: Installed: 1.127 Candidate: 1.127.2 Version table: 1.127.2 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages *** 1.127 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.47 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vachon31131 F pulseaudio /dev/snd/controlC0: vachon31131 F pulseaudio CurrentDesktop: GNOME Date: Thu May 15 07:39:15 2014 HibernationDevice: RESUME=UUID=63c1784a-b66a-498f-ac43-5fea2ee96bdc InstallationDate: Installed on 2014-04-03 (41 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326) MachineType: Dell Inc. Latitude E7440 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=54753b1d-b028-408f-a48d-71e020359a84 ro quiet splash vt.handoff=7 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 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: May 15 07:36:03 vachon-dbp kernel: [203016.704005] wireshark[2344]: segfault at 7fffe7106ff8 ip 7fc51ad8bad5 sp 7fffe7106ff0 error 6 in libc-2.19.so[7fc51ad0b000+1bc000] dmi.bios.date: 02/18/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 091TRH dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd02/18/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn091TRH:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug 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/1319791 Title: Apport for 1289961 Status in “linux” package in Ubuntu: New Bug description: Apport requested in Bug 1289961 Description:Ubuntu 14.04 LTS Release:14.04 linux-generic: Installed: 3.13.0.24.29 Candidate: 3.13.0.24.29 Version table: *** 3.13.0.24.29 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages 100 /var/lib/dpkg/status 3.13.0.24.28 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages linux-firmware: Installed: 1.127 Candidate: 1.127.2 Version table: 1.127.2 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages *** 1.127 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.47 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vachon31131 F pulseaudio /dev/snd/controlC0: vachon31131 F pulseaudio CurrentDesktop: GNOME Date: Thu May 15 07:39:15 2014 HibernationDevice: RESUME=UUID=63c1784a-b66a-498f-ac43-5fea2ee96bdc InstallationDate: Installed on 2014-04-03 (41 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326) MachineType: Dell Inc. Latitude E7440 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=54753b1d-b028-408f-a48d-71e020359a84 ro quiet splash vt.handoff=7 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 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: May 15 07:36:03 vachon-dbp kernel: [203016.704005] wireshark[2344]: segfault at 7fffe7106ff8 ip 7fc51
[Kernel-packages] [Bug 1289961] Re: 8086:08b2 [Lenovo ThinkPad T440s] Power management causes Intel wifi 7260 slowness
Christopeher, Run with PM on. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319791 -- 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: 8086:08b2 [Lenovo ThinkPad T440s] Power management causes Intel wifi 7260 slowness Status in “linux” package in Ubuntu: Incomplete Bug description: 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. WORKAROUND: Remove wireless interface's power management via Powertop --- 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 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 1319791] Re: [Dell Latitude E7440] WiFi issue
Using the Intel 7260 AC Wireless chipset, there is a noticeable slowdown and multiple disconnection problem. When connected to a hotspot it is unusable (multiple disconnections, ICMP times nearly 8000MS). Turning off power management via "iwconfig wlan0 power off" seems to resolve the issue. When the power management is on, you see excessive retries and also spectrum hopping (2.4 to 5.0 and back). The reported link quality is reported by iwconfig between 15-25 out of 70 even though the source is within inches or up to 3 feet away. When connected to a 802.1b/g/n/a/ac infrastructure network, you will seep speeds around 2Mbit, and quick dropping to 100-300Kbit on download (testing via large file gets and HTML5 speed testing). Turning power management off and blacklisting via echo 'HOOK_BLACKLIST="wireless"' > /etc/pm.d/config.d/blacklist seems to resoove the issue. The exessive retries do not exist nor does the spectrum hopping. The provisioned speeds in both highly interfere WiFi areas and interfere-less areas match the expected speeds 50-80Mbit Download / 8-15Mbit Upload. Testing via a local large file, similarly does not have the same issue. It does appear to be the chipset specifically, because USB tethering or being wired via ethernet do not exhibit this problem, it is only using the WiFi chip. -- 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/1319791 Title: [Dell Latitude E7440] WiFi issue Status in “linux” package in Ubuntu: Incomplete Bug description: ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.47 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vachon31131 F pulseaudio /dev/snd/controlC0: vachon31131 F pulseaudio CurrentDesktop: GNOME Date: Thu May 15 07:39:15 2014 HibernationDevice: RESUME=UUID=63c1784a-b66a-498f-ac43-5fea2ee96bdc InstallationDate: Installed on 2014-04-03 (41 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326) MachineType: Dell Inc. Latitude E7440 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=54753b1d-b028-408f-a48d-71e020359a84 ro quiet splash vt.handoff=7 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 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: May 15 07:36:03 vachon-dbp kernel: [203016.704005] wireshark[2344]: segfault at 7fffe7106ff8 ip 7fc51ad8bad5 sp 7fffe7106ff0 error 6 in libc-2.19.so[7fc51ad0b000+1bc000] dmi.bios.date: 02/18/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 091TRH dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd02/18/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn091TRH:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319791/+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 1319791] Re: 8086:08b1 [Dell Latitude E7440] WiFi issue
The upstream mainline (3.15.0-031500rc2-generic #201404201435) has seemed to make a difference for the better. I will continue to monitor. -- 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/1319791 Title: 8086:08b1 [Dell Latitude E7440] WiFi issue Status in “linux” package in Ubuntu: Incomplete Bug description: Using the Intel 7260 AC Wireless chipset, there is a noticeable slowdown and multiple disconnection problem. When connected to a hotspot it is unusable (multiple disconnections, ICMP times nearly 8000MS). It does appear to be the chipset specifically, because USB tethering or being wired via ethernet do not exhibit this problem, it is only using the WiFi chip. Intel Corporation Wireless 7260 [8086:08b1] (rev 73) Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:4470] WORKAROUND: Turn off power management via: iwconfig wlan0 power off or blacklisting via: echo 'HOOK_BLACKLIST="wireless"' > /etc/pm.d/config.d/blacklist ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.47 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC1: vachon31131 F pulseaudio /dev/snd/controlC0: vachon31131 F pulseaudio CurrentDesktop: GNOME Date: Thu May 15 07:39:15 2014 HibernationDevice: RESUME=UUID=63c1784a-b66a-498f-ac43-5fea2ee96bdc InstallationDate: Installed on 2014-04-03 (41 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326) MachineType: Dell Inc. Latitude E7440 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=54753b1d-b028-408f-a48d-71e020359a84 ro quiet splash vt.handoff=7 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 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: May 15 07:36:03 vachon-dbp kernel: [203016.704005] wireshark[2344]: segfault at 7fffe7106ff8 ip 7fc51ad8bad5 sp 7fffe7106ff0 error 6 in libc-2.19.so[7fc51ad0b000+1bc000] dmi.bios.date: 02/18/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 091TRH dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd02/18/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn091TRH:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319791/+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
