From: Pat Erley <pat-lkml@erley.org>
To: Benedikt Schwarz <beweta@gmx.com>, linux-wireless@vger.kernel.org
Subject: Re: iwlwifi: Upload rate is ten times faster on Windows
Date: Sun, 26 Jan 2014 17:56:30 -0600 [thread overview]
Message-ID: <52E5A0AE.7000009@erley.org> (raw)
In-Reply-To: <lc31d9$sma$1@ger.gmane.org>
On 01/26/2014 07:09 AM, Benedikt Schwarz wrote:
> Hi,
>
> the upload rate of my Intel Centrino Wireless-N 100 BGN (REV=0x6C) with
> firmware version 39.31.5.1 build 32895 is about ten times faster on
> Windows 7 (~ 4500 KB/s) than on Linux (~ 500 KB/s) when uploading files
> to my NAS device. I'm running Kubuntu 13.10 with kernel
> 3.12.0-031200-generic.
>
> What could be the reason for this problem?
>
>
> Regards,
> Benedikt Schwarz
>
>
> === dmesg ===
>
> iwlwifi 0000:01:00.0: can't disable ASPM; OS doesn't have ASPM control
> iwlwifi 0000:01:00.0: irq 44 for MSI/MSI-X
> iwlwifi 0000:01:00.0: loaded firmware version 39.31.5.1 build 32895
> op_mode iwldvm
> iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEBUG disabled
> iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
> iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
> iwlwifi 0000:01:00.0: Detected Intel(R) Centrino(R) Wireless-N 100 BGN,
> REV=0x6C
> iwlwifi 0000:01:00.0: L1 Enabled; Disabling L0S
> iwlwifi 0000:01:00.0: L1 Enabled; Disabling L0S
> iwlwifi 0000:01:00.0: Radio type=0x0-0x0-0x3
> iwlwifi 0000:01:00.0: L1 Enabled; Disabling L0S
> iwlwifi 0000:01:00.0: Radio type=0x0-0x0-0x3
>
Some questions which will greatly help in getting this resolved:
How are you connecting to the NAS? Samba/Cifs? NFS? FTP? How are you
measuring your bandwidth?
Check /etc/modprobe.d/* for a line that has something like:
iwlwifi 11n_disable=1
A lot of distributions have that on by default as there have been issues
with the iwlwifi driver using 802.11n.
Are you connecting to an open or wpa1+tkip access point? Try using
wpa2+ccmp instead. This is required for 802.11n to work. Windows may
not be enforcing that portion of the standard.
next prev parent reply other threads:[~2014-01-26 23:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-26 13:09 iwlwifi: Upload rate is ten times faster on Windows Benedikt Schwarz
2014-01-26 23:56 ` Pat Erley [this message]
2014-01-28 19:05 ` Benedikt Schwarz
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