Not enough info to troubleshoot this issue.
Refer to the following link for guidance on analyzing this bug and provide
relevant info you find:
https://wiki.ubuntu.com/X/Troubleshooting/HalBreaksKeyboardAndMouse
Please attach the output of `lspci -vvnn`, and attach your
/var/log/Xorg.0.log file from after reproducing this issue. If you've
made any customizations to your /etc/X11/xorg.conf please attach that as
well.
** Changed in: xorg (Ubuntu)
Status: New => Incomplete
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Mouse buttons and keyboard stop working when panel spawns
https://bugs.launchpad.net/bugs/337491
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