Vishnu Mohan <vishnu2kmohan@...> writes: > > Hello, > > $ uname -a Linux p50 4.4.2-gentoo #2 SMP PREEMPT Sun Feb 21 12:28:42 EST 2016 x86_64 Intel(R) Xeon(R) CPU E3-1505M v5 <at> 2.80GHz GenuineIntel GNU/Linux > $ sudo dmesg | grep -i thinkpad_acpi > [ 3.893358] thinkpad_acpi: ThinkPad ACPI Extras v0.25 > [ 3.893360] thinkpad_acpi: http://ibm-acpi.sf.net/ > [ 3.893361] thinkpad_acpi: ThinkPad BIOS N1EET43W (1.17 ), EC unknown > [ 3.893362] thinkpad_acpi: Lenovo ThinkPad P50, model 20ENCTO1WW > [ 3.894464] thinkpad_acpi: detected a 16-level brightness capable ThinkPad > [ 3.894477] thinkpad_acpi: unknown version of the HKEY interface: 0x200 I think you need to patch your kernel with this: http://article.gmane.org/gmane.linux.acpi.ibm-acpi.devel/3995 I had the same in my t460s, that patch fixed it by adding the 0x200 HKEY interface. ------------------------------------------------------------------------------ Mobile security can be enabling, not merely restricting. Employees who bring their own devices (BYOD) to work are irked by the imposition of MDM restrictions. Mobile Device Manager Plus allows you to control only the apps on BYO-devices by containerizing them, leaving personal data untouched! https://ad.doubleclick.net/ddm/clk/304595813;131938128;j _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
