nota : after reinstallation of linux-restricted-modules-generic, my wifi connection works fine now. I tell you later if I have again the bug "soft lockup detected on CPU#0!" on boot
-- BUG: soft lockup detected on CPU#0! https://launchpad.net/bugs/60053 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
