Kernel parameter to workaround this bug on an HP EliteBook 840 G1: acpi_osi='!Windows 2012'
Related bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1313196
Kernel parameter to workaround this bug on an HP EliteBook 840 G1: acpi_osi='!Windows 2012'
Related bug: https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1313196