Problem se sitovou kartou Broadcom

[Sunshine]

Ahoj,

mam problem se sitovou kartou. Sitova karta se chova takhle "divne" i na Windlich. Tim jsme jen chtel vyloucit ovladace, takze nejspis je problem se sitovou kartou.
Problem je, ze se ta sitovka chova dost nedeterministicky. Takze nemam problem jen s urcitym typem routeru/nastaveni. Nekdy se pripojim, nekdy se na to stejny APcko nepripojim. Nekdy mi to spojeni po case vypadne a je treba restartovat sitovku. Nekdy se vubec nepripojim (protaci se koelcko, nic nedostanu). Nekdy dostanu z DHCP vsechno co dostat mam, ale internet nefunguje. Na internetu jsme nasel spis problem s tim, ze mu t oted na Linuxu nejde, ale driv mu to slo.
Treba tu na neco prijdete.

lspci -nn
24:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)

iwconfig (funkcni pripojeni)
wlan0     IEEE 802.11abg  ESSID:"eduroam" 
          Mode:Managed  Frequency:2.427 GHz  Access Point: 00:14:1B:5B:90:20   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:on

lshw -C network
description: Wireless interface
       product: BCM4313 802.11bgn Wireless Network Adapter
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:24:00.0
       logical name: wlan0
       version: 01
       serial: 20:10:7a:17:09:f0
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.30.223.141 (r415941) ip=147.32.XX.XX latency=0 multicast=yes wireless=IEEE 802.11abg
       resources: irq:19 memory:d4400000-d4403fff

[petertomasy]

Skús použiť natívny ovládač "brcmsmac , "bcma".

Nechce sa mi to tu rozpisovať , lepšie je to v origináli uvedené nižšie... zdroj čerpania inšpirácie

I suggest the following solution procedure:

1) run the following commands in a Terminal using a working, WIRED, Internet connection:

sudo apt-get remove b43-fwcutter firmware-b43-installer

sudo apt-get remove bcmwl-kernel-source

2) blacklist the wl driver in the /etc/modprobe.d/blacklist.conf file by adding this configuration line:

blacklist wl

You can edit the file /etc/modprobe.d/blacklist.conf using this command:

sudo gedit /etc/modprobe.d/blacklist.conf

After editing the /etc/modprobe.d/blacklist.conf file, make sure to save the change.

3) undo the blacklisting of the following lines in the /etc/modprobe.d/blacklist.conf file:

blacklist brcmsmac
blacklist bcma

You can edit the file /etc/modprobe.d/blacklist.conf using this command:

sudo gedit /etc/modprobe.d/blacklist.conf

Using the gedit editor, scroll down and DELETE the following configuration lines:

blacklist brcmsmac
blacklist bcma

There are THREE occurrences of

blacklist brcmsmac

and FOUR occurrences of

blacklist bcma

You need to DELETE all occurrences of these blacklist configuration lines in /etc/modprobe.d/

After editing the /etc/modprobe.d/blacklist.conf file, make sure to save the change.

4) access the homepage of the wireless router using a web browser and using a wired Internet connection (using a LAN cable) and force the wireless router to use Wireless-G (54 Mbps) transmission speeds

5) access the homepage of the wireless router using a web browser and change the wireless transmission channel to channel 8

To summarize, I am advising you to disable the wl wireless driver and replace it with the brcmsmac and bcma drivers, which are currently blacklisted (=disabled) on your PC.