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-   -   network manager reconnecting problem (https://www.linuxquestions.org/questions/linux-networking-3/network-manager-reconnecting-problem-876885/)

shva 04-24-2011 11:23 PM
network manager reconnecting problem
 
I installed Linux Mint Debian Edition (Gnome). One problem I am having is that I always lose wireless connection after the computer being inactive for a while. After I type password to get over the screensaver, the Network Manager loses its original wireless connection and reconnection always results in failure. However, if I reboot at this point, it becomes normal again (that is the only solution I have right now). I don't have a clue what is happening. Could someone please give a hint? Thanks.

grzesiek 04-25-2011 06:27 AM
because system sleep the network card, you must search the options which tells to system don't shutdown network card to save energy.
That the reason, maybe ACPI

EDDY1 04-25-2011 06:30 AM
I had the same problem using debian wheezy, but it was my router. 2-wire router
Had connection would lose connection. Used password it would connect occasionally.
If it's a 2-wire router,
iwconfig shows encryption key a bunch of 4 digit numbers separated by "-".
I copied the key minus the number in ()
lets say the number was xxxx-xxxx-xx (x) I copied xxxx-xxxx-xx<passwd>
would look like xxxx-xxxx-xxxx-xxxx

Hopefully this helps.

EDDY1 04-25-2011 08:02 PM
After I replied machine reverted back to no networks available.

shva 04-27-2011 06:35 PM
Okay. Still don't know what happened exactly but this quick hack works in my case. My wireless network card is "Broadcom Corporation BCM4312 802.11b/g LP-PHY". Whenever the wireless gets locked up after idling for some reason, I do:


Code:
sudo /etc/init.d/network-manager stop
sudo modprobe -r b43
sudo modprobe b43
sudo /etc/init.d/network-manager start
Basically it just reloads the wireless driver "b43". I installed the driver via package called "firmware-b43-lpphy-installer" in repository. I guess the glitch may have something to do with the driver.

---------- Post added 04-27-11 at 07:35 PM ----------

Okay. Still don't know what happened exactly but this quick hack works in my case. My wireless network card is "Broadcom Corporation BCM4312 802.11b/g LP-PHY". Whenever the wireless gets locked up after idling for some reason, I do:


Code:
sudo /etc/init.d/network-manager stop
sudo modprobe -r b43
sudo modprobe b43
sudo /etc/init.d/network-manager start
Basically it just reloads the wireless driver "b43". I installed the driver via package called "firmware-b43-lpphy-installer" in repository. I guess the glitch may have something to do with the driver.


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