I've been using Ubuntu 14.04 for years without issues, but in the last months the wifi connction seems to be broken. My computer can detect and successfully connect to wifi, but internet is off most of the time. Depending on the particular router, the connection is stable for secons/minutes/hours and then is absent for hours/days in a very unpredictable pattern (other devices can successfully connect to the same routers). Turning computer off and on and similar tricks do not seem to work, neither changing IPv4 settings does. I tried update+upgrade/reinstall options but was not successful. I tried to find a solution on the forum, but I am not an expert at all so I could not figure out what my problem is
Thank you in advance
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