This affects me also. I have already filed a bug on launchpad https://bugs.launchpad.net/ubuntu/+source/linux/+bug/412167 This is caused by a buggy DSDT. BIOS updates didn't change mine. I have to use a custom DSDT to fix. Here is a link to the exact problem within the DSDT https://wiki.edubuntu.org/LaptopTestingTeam/HPdv5z Now, custom DSDT support is being removed in every distro, so I'm filing a bug.
This affects me also. I have already filed a bug on launchpad https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/412167 This is caused by a buggy DSDT. BIOS updates didn't change mine. I have to use a custom DSDT to fix. Here is a link to the exact problem within the DSDT https:/ /wiki.edubuntu. org/LaptopTesti ngTeam/ HPdv5z Now, custom DSDT support is being removed in every distro, so I'm filing a bug.