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The wireless connection in my house unfortunately often disappears, requiring a wireless router reboot.

Making this worse is that my ubuntu media pc, does not automatically reconnect to the wireless network when it's been gone, and then comes up about a minute later. The network in question is setup as "connect automatically" in the network settings.

If I manually select my wireless network, using the wireless icon in the topright of my screen, everything works fine, until the next time that wireless goes down.

I'm looking for a way so I don't have to remember to do this manually all the time.

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I have the exact same problem. I'd be satisfied with a solution that used, e.g. a cron script every 5 minutes asking for Network Manager to reconnect, if it's not connected already. – Marius Gedminas Sep 11 '10 at 21:57
@Marius do you have such a script? – Oli♦ Sep 12 '10 at 9:21
Please add some hardware information to your question. – Jorge Castro Sep 16 '10 at 17:49
@Oli: sadly, no. – Marius Gedminas Sep 28 '10 at 3:36
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2 Answers

up vote 2 down vote

I had a similar problem with my laptop's Intel Wireless WiFi 5100 half height card and the driver iwlagn driver. This problem is a known issue with the iwlagn driver, and the best workaround is to disable 802.11n on the card.

To disable 802.11n on this card create/edit your /etc/modprobe.d/options.conf file sudo gedit /etc/modprobe.d/options.conf And add the following to it.

options iwlagn 11n_disable=1 11n_disable50=1
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up vote 1 down vote

You might want to have a look at using wpa_supplicant instead of network-manager, but that doesn't really matter when on a media-center. wpa_supplicant isn't as flexible as network-manager but afaik it doesn't give up after trying three times. have a look at this answer.

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