Hi, May this help to investigate, I noted this in the log :
[ 1.237736] HEST: Table not found. [ 1.237738] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 1.238018] \_SB_.PCI0:_OSC invalid UUID [ 1.238019] _OSC request data:1 8 1f This one is reported there too : https://bugs.launchpad.net/ubuntu/+source/linux/+bug/668148# toshiba Qosmio x505-887 It's also affecting lenovo-g470 -- http://rzr.online.fr/q/lenovo -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/880155 Title: overheat/batterylife To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/880155/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs