Hello Leann,
The same issue also affects the mainline kernel, I installed it as it is indicated in https://wiki.ubuntu.com/KernelTeam/MainlineBuilds
The only thing that helps is adding acpi_osi=Linux in the GRUB to the boot line, as it is recommended in http://bbs.archlinux.org/viewtopic.php?id=87316.
The is no output in dmesg, that's why I didn't attach the dmesg output at the beginning.
Hello Leann,
The same issue also affects the mainline kernel, I installed it as it is indicated in https:/ /wiki.ubuntu. com/KernelTeam/ MainlineBuilds
The only thing that helps is adding acpi_osi=Linux in the GRUB to the boot line, as it is recommended in http:// bbs.archlinux. org/viewtopic. php?id= 87316.
The is no output in dmesg, that's why I didn't attach the dmesg output at the beginning.