I have tested kernel 3.10-rc7 and I had a block at 19:36 I turned back on the notebook at 19:41 this is the syslog https://www.box.com/s/oiwsb7dlxoopqblatjv4
** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1193639 Title: randomly freeze of sysem during use a battery To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1193639/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs