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My laptop was working fine, but I have installed some updates and after restarting, suddenly my resolution changed. I tried to change the resolution but highest resolution is already set. Wifi is not working and neither are any of the USB ports. If I open terminal, a part of the terminal window goes beyond the screen. When I boot to Windows, everything works fine. So I am sure there is no hardware problem. What is the reason behind this and how can I fix it?

My OS is Ubuntu 16.04

Mithun Sarker Shuvro
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This may be an issue with a kernel update. If so from the grub menu choose Advanced, and cursor down to a previously numbered kernel entry and select it. If booting a previous kernel resolves the issue you should file a bug report against the kernel that exhibited the issue.

Elder Geek
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  • Thanks for your response , but I don't know how to do it . Could you tell me or a link – Mithun Sarker Shuvro Oct 13 '16 at 17:57
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    @shuvro See here: [How can I boot with an older kernel version?](http://askubuntu.com/q/82140/301745) – wjandrea Oct 13 '16 at 17:59
  • @wjandrea and Elder Geek thanks , My problem solved, the version Ubuntu, with Linux 4.4.0-43 , but then I choose Ubuntu, with Linux 4.4.0-42 , it solves . Could you please tell me , how can I load 4.4.0-42 by default ? – Mithun Sarker Shuvro Oct 13 '16 at 18:44
  • @shuvro See http://askubuntu.com/questions/106031/how-can-i-remove-new-kernel-versions-after-downgrading/106053#106053 Simply change the number string in the answer to match the one you wish to remove. – Elder Geek Oct 13 '16 at 18:57