Comment 9 for bug 546503

I experience this problem as well on both my HP dv6500 with 32bit Lucid and HP 9500 with 64bit Ubuntu Lucid Lynx. Not only do you lose Mouse input, but also keyboard input as well if you toggle the touchpad on/off switch. NOTE: I can still switch to another virtual terminal with Control-Alt-F1 and do a clean shutdown/restart, but it may take several restart attempts and fiddling with the touchpad's on/off switch before it starts functioning properly.

Please also note that when the problem occurs, the touchpad works at the GDM screen but STOPS working immediately after signing in with a username and password.