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 @ 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
[ 3.894495] thinkpad_acpi**: please report this to
ibm-acpi-devel@lists.sourceforge.net <ibm-acpi-devel@lists.sourceforge.net>*
[ 3.894518] thinkpad_acpi: radio switch found; radios are enabled
[ 3.894600] thinkpad_acpi: This ThinkPad has standard ACPI backlight
brightness control, supported by the ACPI video driver
[ 3.894601] thinkpad_acpi: Disabling thinkpad-acpi brightness events by
default...
[ 3.896254] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is
unblocked
[ 3.897099] thinkpad_acpi: Standard ACPI backlight interface available,
not loading native one
[ 3.899557] input: ThinkPad Extra Buttons as /devices/platform/
thinkpad_acpi/input/input6
[ 3966.501665] thinkpad_acpi: acpi_evalf(GTRW, dd, ...) failed:
AE_NOT_FOUND
[ 3966.501669] thinkpad_acpi: Cannot read adaptive keyboard mode.
[ 3969.278702] thinkpad_acpi: acpi_evalf(STRW, vd, ...) failed:
AE_NOT_FOUND
[ 3969.278704] thinkpad_acpi: Cannot set adaptive keyboard mode.
[ 6605.986884] thinkpad_acpi: acpi_evalf(GTRW, dd, ...) failed:
AE_NOT_FOUND
[ 6605.986887] thinkpad_acpi: Cannot read adaptive keyboard mode.
[ 6608.257329] thinkpad_acpi: EC reports that Thermal Table has changed
[ 6609.047183] thinkpad_acpi: EC reports that Thermal Table has changed
[ 6609.228249] thinkpad_acpi: acpi_evalf(STRW, vd, ...) failed:
AE_NOT_FOUND
[ 6609.228250] thinkpad_acpi: Cannot set adaptive keyboard mode.
[10336.422905] thinkpad_acpi: EC reports that Thermal Table has changed
[10469.337716] thinkpad_acpi: EC reports that Thermal Table has changed
[16227.777120] thinkpad_acpi: acpi_evalf(GTRW, dd, ...) failed:
AE_NOT_FOUND
[16227.777124] thinkpad_acpi: Cannot read adaptive keyboard mode.
[16229.900005] thinkpad_acpi: EC reports that Thermal Table has changed
[16230.671167] thinkpad_acpi: acpi_evalf(STRW, vd, ...) failed:
AE_NOT_FOUND
[16230.671169] thinkpad_acpi: Cannot set adaptive keyboard mode.
[23694.561489] thinkpad_acpi: acpi_evalf(GTRW, dd, ...) failed:
AE_NOT_FOUND
[23694.561491] thinkpad_acpi: Cannot read adaptive keyboard mode.
[23696.844617] thinkpad_acpi: EC reports that Thermal Table has changed
[23697.634474] thinkpad_acpi: EC reports that Thermal Table has changed
[23697.805622] thinkpad_acpi: acpi_evalf(STRW, vd, ...) failed:
AE_NOT_FOUND
[23697.805623] thinkpad_acpi: Cannot set adaptive keyboard mode.
The BIOS can be downloaded here -
http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-p-series-laptops/thinkpad-p50?beta=false
BIOS Bootable Update CD (1.17):
https://download.lenovo.com/pccbbs/mobiles/n1eur06w.iso
README for BIOS Bootable Update CD (1.17):
https://download.lenovo.com/pccbbs/mobiles/n1eur06w.txt
BIOS Update Utility(1.17):
https://download.lenovo.com/pccbbs/mobiles/n1euj06w.exe
README for BIOS Update Utility (1.17):
https://download.lenovo.com/pccbbs/mobiles/n1euj06w.txt
Thanks,
Vishnu
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