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: USER PID ACCESS COMMAND /dev/snd/controlC1: vachon 31131 F.... pulseaudio /dev/snd/controlC0: vachon 31131 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 00007fc51ad8bad5 sp 00007fffe7106ff0 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
