On Wednesday 02 of January 2013 12:15:48 Piotr Haber wrote: > On 01/02/13 10:09, Vojtech Havel wrote: > > On Wednesday 02 of January 2013 08:20:51 Piotr Haber wrote: > >> 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 > > > > Hi Piotr, > > > > # cat /sys/kernel/debug/brcmsmac/bcma0:0/hardware > > board vendor: 14e4 > > board type: 608 > > board revision: 1109 > > board flags: 402201 > > board flags2: 884 > > firmware revision: 262032b > > Hi, > > what you have here is a Bluetooth combo board, with shared BT & WiFi > antenna. > There were reports before of poor performance on such boards. > Currently brcmsmac driver does not support BT coexistence. > You might try and disable BT and see if this helps. I tried to disable BT in BIOS and the problem remains. > > Sorry we cannot do more for you. > OK, I will continue using the wl module, which works with most of the networks. Anyway, thanks for your time, Piotr. Vojtech ��.n��������+%������w��{.n�����{���zW����ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
