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I have a hardware detection problem, what logs do I need to look into?

I am using Ubuntu's Network Manager to connect to a local wifi router. My problem is, that it often disconnects without any visible reason (router is on, internet connection seems to be working, wifi diodes are blinking). I mostly have to disable wifi from Network Manager, enable it again to get wifi connecting again.

Plus I am often experiencing Network Manager trying to connect to my wifi, trying several times but then giving up.

I even tried an external usb-wifi card, but with the very same results.

My question is:

How can I debug this? Which logs should I read to see what is really happening when all of these errors occur - so I can post them here and see how to proceed?

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marked as duplicate by Jorge Castro, Ringtail, Stephen Myall, fossfreedom Nov 14 '12 at 10:47

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

1 Answer

To be precise, this post answers my question: http://askubuntu.com/a/61547/78383:

To debug your wifi-connection, you use dmesg to output the logs your wifi card produces.

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