Thanks for your bug report, more information is needed.
What version of Ubuntu are you using?
What brand and model is your keyboard and mouse.
How is your keyboard and mouse connected to your PC: PS/2, USB, wireless, ...
Try the following:
1. Direct after gnome login open a terminal and enter the following command:
$ cp /var/log/Xorg.0.log ~/Xorg.0.log
2. Wait until your mouse and keyboard stop working.
3. Open a terminal by pressing Ctrl-Alt-F1.
4. Enter the following commands:
$ LANG=C
$ cp /var/log/Xorg.0.log ~/Xorg.0.log_tmp
$ diff -ns ~/Xorg.0.log ~/Xorg.0.log_tmp > ~/Xorg.0.log_diff-ns
$ cp /var/log/dmesg ~/dmesg_boot
$ dmesg > ~/dmesg
$ diff -ns ~/dmesg_boot ~/dmesg > ~/dmesg_diff-ns
5. Attach Xorg.0.log, Xorg.0.log_diff-ns, dmesg_boot and dmesg_diff-ns to this
bug report.
** Changed in: Ubuntu
Assignee: (unassigned) => Pascal De Vuyst
Status: New => Incomplete
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Mouse and keyboard stops working suddenly
https://bugs.launchpad.net/bugs/117329
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