On 2015-06-27 00:49, Henrique de Moraes Holschuh wrote:
On Fri, 26 Jun 2015, Hui Wang wrote:
Again, I'm on a X121e, and that has only a single physical LED for signaling the power state. The mute button is behind key combination of the keyboard.
Jan
There is no reason to change a power button to a reset button after accessing the acpi device "SSMS", the "SSMS" is for the mute led instead of the power management.
I think it is better you login to the lenovo website and look for the latest BIOS image, then upgrade the BIOS on your machine to see if it can solve the problem or not.
Hmm, I think I am missing something here.
Please explain _in detail_ what you mean with "changing a power button to a reset button by acessing the SSMS ACPI method in a X121e".
Are we trigering a bug somewhere that crashes the x121e and causes it to reboot?
Well, there aren't much details to describe in this case: When this patch is applied and I press the power button, the device performs a hard reset. It doesn't reveal if the kernel crashes catastrophically, causing a triple fault or so, or if the firmware decides to reset the platform. Reverting the patch or preventing its effect via a quirk filter like I posted [1] makes the issue go away.
Jan
[1] http://mailman.alsa-project.org/pipermail/alsa-devel/2014-June/078284.html