`I am switched from windows to dual boot with ubuntu 6 months ago. And its network card was working fine. One of my colleague having same model who had just installed ubuntu told me that there is some issue with its wireless driver , as I remember it was some dis-connectivity happening but that wasn't a major issue. He told me 2 commands, which I don't remember, I executed around a month ago. And from then I am facing connectivity problem. At home, I have to use cable instead of wifi and at office I have to use TP-link USB stick by one of my colleague. Otherwise for a week, don't know due to some ubuntu release or some other reason, I am unable to connect and use my internet through wifi. I can have a TP-link USB that just work fine, but my questions is:
That how can I check that why all that happened? If it was working before, then their should be its solution with any external hardware by installing some driver or configurations, so what is that solution? Is there some command I need to execute to get further information and post here?
thanks in advance guys