Dmesg output. line 1114: This is me plugging into a wired network. line 1122: Having downloaded and installed the stock linux-firmware v1.79 package, I removed and re-insterted the iwlwifi kernel module. line 1135: Removed wired network connection again, and back on wifi with older firmware. No problems observed afterwards.
** Attachment added: "dmesg output (what's remaining)" https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1242724/+attachment/3886264/+files/dmesg.out -- 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/1242724 Title: Latest intel wifi firmware results in unstable wifi connection Status in “linux-firmware” package in Ubuntu: New Bug description: Laptop is a Lenovo ThinkPad w530. Wireless PCI card: csmith@csmith-w530:~$ lspci ... 03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34) Downgrading to linux-firmware v1.79 appears to fix the problem, so I suspect the problem was introduced with v1.79.7, as I was previously at v1.79.6 with no problems (note I can't find v1.79.6 anymore.) Symptoms include: - Frequent wifi drops (mulitple times per minute). - Large ping times from other machines (up to >1000ms observed, ~1.3 ms the expected norm). - Dropped ping requests. - Kernel messages as follows: [ 8599.406488] iwlwifi 0000:03:00.0: fail to flush all tx fifo queues I find via google frequent references to the above kernel message with this device on other distros, so I don't think this is isolated to anything ubuntu or thinkpad specific. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-firmware 1.79.7 ProcVersionSignature: Ubuntu 3.8.0-31.46~precise1-generic 3.8.13.8 Uname: Linux 3.8.0-31-generic x86_64 NonfreeKernelModules: zfs zcommon znvpair zavl zunicode ApportVersion: 2.0.1-0ubuntu17.5 Architecture: amd64 Date: Mon Oct 21 15:13:20 2013 Dependencies: InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213) MarkForUpload: True PackageArchitecture: all ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: linux-firmware UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1242724/+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
