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xen-devel
[Xen-devel] Re: [regression] Ideapad S10-3 does not wake up from suspend
 
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To:  | 
Jonathan Nieder <jrnieder@xxxxxxxxx> | 
 
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Subject:  | 
[Xen-devel] Re: [regression] Ideapad S10-3 does not wake up from suspend (Re: [PATCH v2 2/2] x86: don't unmask disabled irqs when migrating them) | 
 
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From:  | 
"Serge E. Hallyn" <serge@xxxxxxxxxx> | 
 
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Date:  | 
Fri, 2 Sep 2011 03:01:40 +0000 | 
 
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Cc:  | 
Len Brown <len.brown@xxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>,	xen-devel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx,	JBeulich@xxxxxxxxxx, Dave Hansen <dave@xxxxxxxxxxxxxxxxxx>,	Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, mingo@xxxxxxxxxx,	hpa@xxxxxxxxx, Thomas Gleixner <tglx@xxxxxxxxxxxxx>,	Lars Boegild Thomsen <lth@xxxxxx> | 
 
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Fri, 02 Sep 2011 02:25:08 -0700 | 
 
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Quoting Jonathan Nieder (jrnieder@xxxxxxxxx):
> Hi Dave,
> 
> Dave Hansen wrote:
> 
> > I'm seeing the exact same symptoms on my S10-3, fwiw.  They definitely
> > don't happen when intel_idle is compiled out or when
> > intel_idle.max_cstate=0 is specified on the kernel command-line.
> 
> Lars reminds me[1] that the kernel he was testing already had the
> intel_idle driver compiled out, so you're probably seeing a different
> (possibly related) bug.  (By the way, Lars, it is fine to communicate
> with lkml directly. :)  The people there don't bite.)
Right, over the past year or so this has been hit or miss.  Sometimes
intel_idle.max_cstate=0 would fix it.  Sometimes (like today) not.  Ever
since the problems have started, using intel_idle has not worked once,
but disabling it is not 100% reliable.  And when it doesn't work, it
doesn't work at all until I get a new kernel.
Sorry, not very helpful.
-serge
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- [Xen-devel] Re: [regression] Ideapad S10-3 does not wake up from suspend (Re: [PATCH v2 2/2] x86: don't unmask disabled irqs when migrating them),
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