** Description changed: See bug 906527. + + Having done an experiment with iperf across a large number of systems we + have in lab, this system stood out as only achieving bandwidths of 3-4 + Mbit/s p/s where other systems were reaching the mid 40s. + + Our iperf setup is an iperf server connected by wire to a router which + the test systems then communicate wirelessly with. + + Client connecting to 10.153.104.227, TCP port 5001 + TCP window size: 21.0 KByte (default) + ------------------------------------------------------------ + [ 3] local 10.153.104.202 port 34916 connected with 10.153.104.227 port 5001 + [ ID] Interval Transfer Bandwidth + [ 3] 0.0-30.4 sec 12.1 MBytes 3.35 Mbits/sec + + It is confirmed that the 10.153.104.202 IP is bound to the wireless NIC + mentioned above. Wireless router is a Linksys WRT54GS v3 running DD-WRT with all bands enabled (a/b/g). - ProblemType: Bug - DistroRelease: Ubuntu 12.04 + ProblemType: BugDistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-6-generic 3.2.0-6.12 ProcVersionSignature: Ubuntu 3.2.0-6.12-generic 3.2.0-rc6 Uname: Linux 3.2.0-6-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.90-0ubuntu1 Architecture: i386 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: ubuntu 1691 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: ubuntu 1691 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xd4620000 irq 44' - Mixer name : 'Intel IbexPeak HDMI' - Components : 'HDA:10ec0268,11790616,00100003 HDA:11c11040,11790001,00100200 HDA:80862804,11790001,00100000' - Controls : 19 - Simple ctrls : 10 + Card hw:0 'Intel'/'HDA Intel at 0xd4620000 irq 44' + Mixer name : 'Intel IbexPeak HDMI' + Components : 'HDA:10ec0268,11790616,00100003 HDA:11c11040,11790001,00100200 HDA:80862804,11790001,00100000' + Controls : 19 + Simple ctrls : 10 Date: Mon Dec 19 16:20:11 2011 HibernationDevice: RESUME=UUID=a8ab30b5-14e2-4447-85f2-ceaf4c178f50 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111213) MachineType: TOSHIBA TECRA A11 ProcEnviron: - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-6-generic root=UUID=503e8a3b-1e64-4e05-b088-fbb10c862db1 ro quiet splash initcall_debug vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.2.0-6-generic N/A - linux-backports-modules-3.2.0-6-generic N/A - linux-firmware 1.66 - SourcePackage: linux + linux-restricted-modules-3.2.0-6-generic N/A + linux-backports-modules-3.2.0-6-generic N/A + linux-firmware 1.66SourcePackage: linux StagingDrivers: mei UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/13/2011 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 3.10 dmi.board.asset.tag: 0000000000 dmi.board.name: Portable PC dmi.board.vendor: TOSHIBA dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: Version 1.0 dmi.modalias: dmi:bvnTOSHIBA:bvrVersion3.10:bd05/13/2011:svnTOSHIBA:pnTECRAA11:pvrPTSE0C-00N00N:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: TECRA A11 dmi.product.version: PTSE0C-00N00N dmi.sys.vendor: TOSHIBA
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/906535 Title: [Toshiba Tecra A11] with AR928X Wireless Network Adapter - poor wireless performance To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/906535/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
