This is a problem for my Lenovo 3000 N100 laptop with both Ubuntu 7.04 (Feisty Fawn) and 7.10 "Gutsy Gibbon".
Essentially, after a resume from standby, the mouse is frozen. Only a reboot will get the mouse back. This also fixes a problem on my laptop with the CPU overheating after hibernation.
The workaround for this is:
As root.
- Add the parameter "i8042.nomux" to the "# kopt" entry in /etc/grub/menu.lst (ignore the fact this entry start with a #).
e.g # kopt=root=UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxx ro i8042.nomux
- Run "update-grub".
- Reboot.
