Bug#819336: linux: lenovo t460 suspend fails when on battery

[stefan esterer <stefan.esterer@gmail.com>]

Source: linux
Version: 4.4.6-1
Severity: important
Tags: upstream

Dear Maintainer,

When having the notebook on the AC, suspending works. But if the notebook is on batteries and I close the lid to suspend, the notebook freezes instantly.
When I add the intel_pstate=no_hwp parameter to the grub configuration, the problem vanishes, but the notebook uses more power.

There already exists a kernel bug tracker entry for this problem: Bug 113551 - intel_pstate=no_hwp else Thinkpad T460s freezes on lid close on battery power (https://bugzilla.kernel.org/show_bug.cgi?id=113551).
I can confirm this problem on my T460 device.


-- System Information:
Debian Release: stretch/sid
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.4.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)