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I have Ubuntu 11.10 and my system crashes after about 10 minutes. I think it is something to do with my wifi. I have Intel Centrino 6250 AGN + WiMax wireless chipset.

I get the following error on the screen: Error sending POWER_TABLE_CMD: time out after 500ms and a big list of other status messages together with it.

I don't know how to gather the messages printed on the screen when the computer crashes. I am new to Ubuntu and not very familiar with the terminal commands.

Any help would be much appreciated.

Thanks Harish

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closed as off topic by James Apr 28 '12 at 19:01

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

Once you reboot, try doing this and see if it keeps happening: iwlist wlan0 power off. This turns off Wifi power saving. – Chuck R Mar 6 '12 at 7:21
This question should instead be filed as a bug report, thanks! Instructions here. – Jorge Castro Apr 28 '12 at 18:43

If my comment works for you, create the file /etc/NetworkManager/dispatcher.d/ and add this to the contents:


if [ "$IF" == "wlan0" ]
    if [ "$2" == "up" ]
        iwlist wlan0 power off
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