Aaron Whitehouse, yes, always test the latest mainline kernel (and
mention which version used precisely) in all future tests unless
specifically asked otherwise.
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Thanks Christopher,
Do you want me to do this with the latest mainline kernel, rather than
the Ubuntu 15.10 one?
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Title:
Intel
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
** Description changed:
- My Intel wireless card is significantly slower in Ubuntu than it is in
- Windows 7. Turning off Power Management didn't change anything.
+ My Intel wireless card is significantly slower in Ubuntu than it is in
Windows 7. Turning off Power Management didn't change
** Tags removed: kernel-bug-exists-upstream-4.1-rc3
** Tags added: kernel-bug-exists-upstream-4.5-rc5
** Description changed:
My Intel wireless card is significantly slower in Ubuntu than it is in
Windows 7. Turning off Power Management didn't change anything.
According to iperf (with
For comparison, on Windows 7 (machine in same spot)
Up to 54Mbps
>iperf -c 192.168.0.102
Client connecting to 192.168.0.102, TCP port 5001
TCP window size: 63.0 KByte (default)
Ah right, thanks Christopher. Sorry, I thought you were meaning on the
Ubuntu side. I've now done that (on the latest mainline) and there
doesn't seem to be a significant variation.
$ uname -r
4.5.0-040500rc5-generic
Wireless mode was 'Up to 144Mbps (best for wireless range)'
$ iperf -c
Aaron Whitehouse, one would do this via the router admin console.
** Tags added: wily
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Title:
Intel Wireless-N 2230 4x faster in
This issue still persists in 15.10.
$ iperf -s
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
[ 4] local 192.168.0.102 port 5001 connected with
[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete = Expired
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Aaaron Whitehouse, with the latest mainline kernel (4.1-rc6) does
switching 802.11 type (ex. N to G or vice versa) change anything?
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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** Description changed:
My Intel wireless card is significantly slower in Ubuntu than it is in
- Windows 7.
+ Windows 7. Turning off Power Management didn't change anything.
According to iperf (with the laptop a couple of feet from the router and the
server plugged into it):
== Ubuntu
No, it doesn't seem to.
=
$ iwconfig
virbr0-nic no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:VM851079-2G
Mode:Managed Frequency:2.462 GHz Access Point: 10:0D:7F:18:C4:80
Aaron Whitehouse, if you disable Power Management, does this provide a
WORKAROUND?
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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I don't think so, no.
It's this:
http://electronics360.globalspec.com/article/3410/netgear-super-hub-2-vmdg485-wireless-router-teardown
which looks quite different to the pictures on the page that you linked to.
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Aaron Whitehouse, just to clarify, could you please post the results of the
following terminal command:
iwconfig
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Title:
Intel
It's a Virgin Media Superhub 2, which is a Netgear VMDG485:
Information Cable Modem EuroDOCSIS 3.0 Compliant
Serial Number 3BW132UG04977
Boot Code Version PSPU-Boot 1.0.20.1356
Software VersionV1.01.29
Hardware Version3.11
Please let me know if you need anything
Aaron Whitehouse, just to clarify, would you actually have a Netgear
DGND3700v2 under the hood as noted in
http://downloadcenter.netgear.com/other/#register ?
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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Aaron Whitehouse, could you please provide the full router manufacturer,
model, and firmware version?
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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I have just tested this with the latest upstream kernel:
$ iperf -c 192.168.0.102
Client connecting to 192.168.0.102, TCP port 5001
TCP window size: 85.0 KByte (default)
[ 3]
Updating the BIOS does not solve the issue (the speed actually reduced
slightly).
After updating the BIOS, this is the output:
[ 3] local 192.168.0.3 port 49429 connected with 192.168.0.102 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.1 sec 21.6 MBytes 18.0 Mbits/sec
$
Aaron Whitehouse, could you please test the latest upstream kernel
available from the very top line at the top of the page (the release
names are irrelevant for testing, and please do not test the daily
folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will
allow additional
Aaron Whitehouse, thank you for reporting this and helping make Ubuntu
better. As per http://www.dell.com/support/home/us/en/04/product-
support/product/inspiron-14z-5423/drivers an update to your computer's
buggy and outdated BIOS is available (A13). If you update to this
following
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
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Title:
Intel Wireless-N 2230 4x faster in Windows 7 than 15.04
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