From: "Piotr Haber" <phaber@broadcom.com>
To: "Vojtech Havel" <xhavel1@fi.muni.cz>
Cc: linux-wireless@vger.kernel.org
Subject: Re: bugreport brcmsmac weak signal
Date: Wed, 2 Jan 2013 08:20:51 +0100 [thread overview]
Message-ID: <50E3DFD3.6010803@broadcom.com> (raw)
In-Reply-To: <1707792.Sg5XObDUQq@ledge>
On 01/02/13 01:09, Vojtech Havel wrote:
> Hi,
>
> I have problems with my Broadcom BCM4313 wifi card while using brcmsmac module.
>
> The wifi signal is terribly weak. When the distance between my laptop and AP is
> more than ~5 m the network is not visible at all. When the laptop is closer,
> it connects, but it is very slow due to weak signal. I have to sit next to AP
> when I want link quality more than 60/70.
>
> If I use Broadcom hybrid driver - wl - it works normally (but has different
> problems...).
>
> I tried to use three different wifi networks with this combination and all of
> them had the same problem.
>
> -----
> My setting:
> $ uname -r
> 3.8.0-rc1
>
> I applied the patch from:
> http://marc.info/?l=linux-wireless&m=135635090121154&w=2
>
> The same with 3.5.7 gentoo kernel.
> -----
> wavemon info: (with brcmsmac, ~5 m between my laptop and the ap)
>
> ┌─Interface────────────────────────────────────────────────
> │wlan0 (IEEE 802.11bgn, WPA/WPA2), ESSID: "ihome"
> ├─Levels───────────────────────────────────────────────────
> │
> │link quality: 23/70
> │======================
> │
> │signal level: -87 dBm (2,00 pW)
> │========
> │
> │
> ├─Statistics───────────────────────────────────────────────
> │RX: 3 8178(2,41 MiB), invalid: 0 nwid, 0 crypt, 0 frag, 3 misc
> │TX: 4 1789(779,619KiB), mac retries: 31, missed beacons: 0
> ├─Info─────────────────────────────────────────────────────
> │mode: Managed, access point: (not relevant :-))
> │freq: 2,437 GHz, channel: 6, bitrate: 5,5 Mbit/s
> │power mgt: off, tx-power: 19 dBm (79,43 mW)
> │retry: long limit 7, rts/cts: off, frag: off
> │encryption: n/a (requires CAP_NET_ADMIN permissions)
> ├─Network──────────────────────────────────────────────────
> │wlan0 (UP RUNNING BROADCAST MULTICAST)
> │mac: (not relevant :-)), qlen: 1000
> │ip: 192.168.1.103/24, bcast: 255.255.255.255
> └──────────────────────────────────────────────────────────
Hi Vojtech,
I see you are running v3.8-rc1, that's great since you can provide us
with the content of /sys/kernel/debug/brcmsmac/bcma0:0/hardware so we
know exactly which hardware you have.
Also dmesg contents would be helpful i think
Kind regards
Piotr
next prev parent reply other threads:[~2013-01-02 7:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-02 0:09 bugreport brcmsmac weak signal Vojtech Havel
2013-01-02 7:20 ` Piotr Haber [this message]
2013-01-02 9:09 ` Vojtech Havel
2013-01-02 11:15 ` Piotr Haber
2013-01-02 12:23 ` Vojtech Havel
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