[ltp] Thinkpad T460s freezing on lid close

[Yrjan Skrimstad]

Small update for anyone else experiencing this issue. Using
"intel_pstate=no_hwp" as a kernel parameter seems to stop it from
crashing.

On Thu, 3 Mar 2016 10:22:34 +0100
Yrjan Skrimstad <yrjans@gmail.com> wrote:

> Hi,
> 
> On Thu, 03 Mar 2016 09:36:21 +0100
> Yves-Alexis Perez <corsac@debian.org> wrote:
> 
> > Hi,
> > On mer., 2016-03-02 at 14:05 +0100, Yrjan Skrimstad wrote:  
> > > A small heads-up. There seems to be a problem with the Thinkpad
> > > T460s freezing on lid close. This only happens when running on
> > > battery, when running on AC it will not freeze. I believe it to be
> > > ACPI-related as it stops happening when I boot with "acpi=off" as
> > > a kernel parameter. All this is happening with latest mainline
> > > kernel and all other kernels I have tried.
> > > 
> > > I have posted a bug report,
> > > https://bugzilla.kernel.org/show_bug.cgi?id=113551, that might be
> > > of interest to any other T460s users.
> > > 
> > > I have tested a bit to see if I can find a workaround other than
> > > suspending by way of "systemctl suspend" before closing the lid,
> > > but I have yet to find one.    
> > 
> > It might help to says on which linux kernels you tested (I assume
> > the Debian sid 4.4 but did you try the 4.5 experimental ones, and
> > current mainline rcs?)
> > 
> > Regards,  
> 
> I have tried on Debian's 4.3 and 4.4 kernels and I am currently
> running on the current mainline kernel (4.5-rc6). I have not yet
> tried any other 4.5 kernels, though I'll happily do if anyone happens
> to have any suggestions.