Aaron Whitehouse, I was a little surprised you didn't see a noticeable performance improvement when putting the router in compatibility mode.
Despite this, to confirm it's not just downstepping your speed with the same method, if you put the router in compatibility mode, keep power management off (and going forward on all future test), and then execute the following in Ubuntu does it change anything (a simple yes/no is fine here): sudo rmmod iwlwifi sudo modprobe iwlwifi 11n_disable=1 -- 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/1450755 Title: Intel Wireless-N 2230 4x faster in Windows 7 than 15.04 (iwlwifi) Status in linux package in Ubuntu: Expired Bug description: My Intel wireless card is significantly slower in Ubuntu than it is in Windows 7. Turning off Power Management didn't change anything. I'm using the latest upstream firmware: iwlwifi 0000:07:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm According to iperf (with the laptop a couple of feet from the router and the server plugged into it): == Ubuntu 15.04 == [ 4] local 192.168.0.102 port 5001 connected with 192.168.0.3 port 43672 [ ID] Interval Transfer Bandwidth [ 4] 0.0-10.1 sec 23.2 MBytes 19.3 Mbits/sec == Windows 7 == [ 4] local 192.168.0.102 port 5001 connected with 192.168.0.3 port 49247 [ 4] 0.0-10.1 sec 98.4 MBytes 82.0 Mbits/sec Transfer rates for previous Ubuntu releases are about the same: 13.10: [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.1 sec 22.6 MBytes 18.9 Mbits/sec 14.10 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.1 sec 27.8 MBytes 23.1 Mbits/sec WiFi Router details: Virgin Media Superhub 2 (Netgear VMDG485) Boot Code Version PSPU-Boot 1.0.20.1356 Software Version V1.01.29 Hardware Version 3.11 ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-15-generic 3.19.0-15.15 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: aaron 2193 F.... pulseaudio CurrentDesktop: Unity Date: Fri May 1 10:37:38 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2013-04-26 (734 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: Dell Inc. Inspiron 5423 ProcFB: 0 inteldrmfb 1 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-15-generic root=UUID=e429a76e-75c0-44b9-90d4-a75ee21d98a2 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-15-generic N/A linux-backports-modules-3.19.0-15-generic N/A linux-firmware 1.143 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-04-25 (5 days ago) dmi.bios.date: 08/03/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A03 dmi.board.name: 0RMVR3 dmi.board.vendor: Dell Inc. dmi.board.version: A03 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA03:bd08/03/2012:svnDellInc.:pnInspiron5423:pvrNotSpecified:rvnDellInc.:rn0RMVR3:rvrA03:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Inspiron 5423 dmi.product.version: Not Specified dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1450755/+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
