Public bug reported:
My Intel wireless card is significantly slower in Ubuntu than it is in
Windows 7.
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
I have attached the output of Wireless Script, which should give all the
necessary details about my setup. Any thoughts would be appreciated.
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.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug vivid
** Attachment added: "Output from Wireless Script"
https://bugs.launchpad.net/bugs/1450755/+attachment/4388959/+files/wireless-info.txt
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https://bugs.launchpad.net/bugs/1450755
Title:
Intel Wireless-N 2230 4x faster in Windows 7 than 15.04 (iwlwifi)
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