Wireless drops after kernel update. [Solved]

[fred roller]

When f18 updated the kernel to 3.8.8.203 my wireless started dropping 
after a few minutes of use and had still kept dropping into kernel 
update 3.8.9.200.  I finally found that IPV6 enabled may be the cause.  
The procedure at:

http://www.linuxexplorers.com/2013/01/disable-ipv6-in-fedora-core-to-address...

which edits "/etc/sysctl.conf" to disable IPV6 at boot, and is 
originally for f17, worked for f18 as well.  Here is my set up for 
comparison:

- Acer Aspire 7520
- 05:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g 
WLAN (rev 01)
- 3.8.9-200.fc18.x86_64 #1 SMP on an AMD w/ 4Gb RAM

so far the wireless has kept connection through two boot cycles.

Disabling function is not a permanent fix so I am open to any further 
insight to this issue if anyone has any ideas.  Hope this helps someone.

Fred

[Reindl Harald]

Am 30.04.2013 21:17, schrieb Fred Roller:
> When f18 updated the kernel to 3.8.8.203 my wireless started dropping after a few minutes of use and had still kept
> dropping into kernel update 3.8.9.200.  I finally found that IPV6 enabled may be the cause.  The procedure at:
>
> http://www.linuxexplorers.com/2013/01/disable-ipv6-in-fedora-core-to-address...
>
> which edits "/etc/sysctl.conf" to disable IPV6 at boot

if you want to disable ipv6 at all add "ipv6.disable=1" as kernel-param

you have no single way to disable it COMPLETLY with sysctl.conf
with sysctl.conf you have at leats link-local addresses while boot
with the correct kernel param results like below

for any Fedora from F16 up to F19

[harry@srv-rhsoft:~]$ ifconfig eth0
eth0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu 1500
        ether 24:be:05:1a:c0:27  txqueuelen 1000  (Ethernet)
        RX packets 1418  bytes 363800 (355.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1158  bytes 416642 (406.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 20  memory 0xf7e00000-f7e20000

[Erik P. Olsen]

On 30/04/13 21:17, Fred Roller wrote:
> When f18 updated the kernel to 3.8.8.203 my wireless started dropping after a
> few minutes of use and had still kept dropping into kernel update 3.8.9.200.  I

[snip]

Edit connections and on tab ipv6 select "ignore".