On mer., 2016-03-30 at 22:01 +0300, alxarch wrote: > Hi all, > > I recently bought a Thinkpad T460. Most issues I've had with it (trackpoint > scroll, intel 520 glitches) have been more or less resolved by upgrading > to 4.6-rc1 kernel. > The last issue I can't solve is the computer hanging when closing the lid > while on battery power. The laptop freezes completely and nothing is > reported in dmesg or journalctl. > I have to force a shutdown by holding the power button for 5sec. > If the lid is closed with AC plugged in, it suspends and wakes up without > an issue. > Also if is suspend before closing the lid, everything also works normally. > > During boot i get the following output relating to thinkpad_acpi module > > [ 3.475030] thinkpad_acpi: ThinkPad ACPI Extras v0.25 > [ 3.475033] thinkpad_acpi: http://ibm-acpi.sf.net/ > [ 3.475034] thinkpad_acpi: ThinkPad BIOS R06ET33W (1.07 ), EC unknown > [ 3.475035] thinkpad_acpi: Lenovo ThinkPad T460, model 20FN003GGM > [ 3.476266] thinkpad_acpi: unknown version of the HKEY interface: 0x200 > [ 3.476290] thinkpad_acpi: please report this to > ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx > [ 3.477102] thinkpad_acpi: radio switch found; radios are enabled > [ 3.477116] thinkpad_acpi: This ThinkPad has standard ACPI backlight > brightness control, supported by the ACPI video driver > [ 3.477117] thinkpad_acpi: Disabling thinkpad-acpi brightness events by > default... > [ 3.478477] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is > unblocked > [ 3.480422] thinkpad_acpi: Standard ACPI backlight interface available, not > loading native one > > I am running Arch linux. > The issue exists on every kernel version I tried: 4.1, 4.4, 4.5, 4.6-rc1. > > I am not sure this is related to thinkpad_acpi module but I figured I start > from here. > I am willing to help with this issue or to test other things on the T460. > Someone reported the same behavior on linux-thinkpad mailing list [1]. It seems that adding intel_pstate=no_hwp to the kernel command line workarounded the problem. Regards, [1] http://article.gmane.org/gmane.linux.hardware.thinkpad/44536 -- Yves-Alexis
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