Laptop freeze on plug/unplug

Hello,

I've installed Trisquel few weeks ago on my Acer Aspire ES1 and everything works fine until now. But this week I'm not at home and I've forget my laptop charger so I use an universal laptop charger which is quite loose so my laptop easily unplug. Because of this, I notice that my laptop freeze when I plug or unplug the charger. I cannot switch to a another terminal or use the Magic SysRq key, that's why I think it's a kernel panic.

I search some answers and I try to use acpi=off in my /etc/default/grub and it seems to work. Unfortunately, with acpi=off, I lose the battery applet in Gnome which is quite useful !

Anybody knows a solution for both : plug/unplug my laptop without kernel panic and using battery applet on Gnome ?

Thank you for your help !