[gentoo-user] Poor quality of wireless connection

[gentoo-user] Poor quality of wireless connection

[José Romildo Malaquias]

Hello.

I have a notebook with an Intel Centrino Advanced-N 6230 wireless
card.

In gentoo (kernel 3.4.3-gentoo) and also in Fedora 17 the connection
through it is of poor quality. ping to the router is getting about 50%
packet loss.

With Ubuntu 12.04 and Windows 7 the connection is ok, without packet
loss.

Gentoo, Fedora and Ubuntu are all using the iwlwifi module for the
centrino wireless card.

# lspci -nnv
[...]
08:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6230 [8086:0091] (rev 34)
       Subsystem: Intel Corporation Centrino Advanced-N 6230 AGN [8086:5201]
       Flags: bus master, fast devsel, latency 0, IRQ 18
       Memory at f2d00000 (64-bit, non-prefetchable) [size=8K]
       Capabilities: [c8] Power Management version 3
       Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
       Capabilities: [e0] Express Endpoint, MSI 00
       Capabilities: [100] Advanced Error Reporting
       Capabilities: [140] Device Serial Number 88-53-2e-ff-ff-4f-03-76
       Kernel driver in use: iwlwifi
       Kernel modules: iwlwifi
[...]

Any clues?

Re: [gentoo-user] Poor quality of wireless connection

[Paul Hartman]

On Sat, Jun 23, 2012 at 9:57 PM, José Romildo Malaquias
<j.romildo@gmail.com> wrote:
> Hello.
>
> I have a notebook with an Intel Centrino Advanced-N 6230 wireless
> card.
>
> In gentoo (kernel 3.4.3-gentoo) and also in Fedora 17 the connection
> through it is of poor quality. ping to the router is getting about 50%
> packet loss.
>
> With Ubuntu 12.04 and Windows 7 the connection is ok, without packet
> loss.
>
> Gentoo, Fedora and Ubuntu are all using the iwlwifi module for the
> centrino wireless card.

I have no experience with this card, but I had an Atheros card a few
years ago that was horrible when power saving mode was enabled. When I
disabled power saving, the performance was good. Of course this uses
more battery power... Maybe something similar happens with yours.
Especially if it works in Ubuntu, maybe you can look at the settings
with iwconfig and figure out what the difference is between that and
Gentoo.