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.
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