[Bug 59321] S4 broken with Haswell

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=59321





--- Comment #10 from Takashi Iwai <tiwai at suse.de>  2013-06-07 06:18:24 ---
(In reply to comment #7)
> Hi
> 
> I want to have exactly the same environment as you have, so I can reproduce it
> locally.
> 
> - Which outputs are you using when reproducing this bug? VGA? eDP? DP? HDMI?
> DVI? - Do you attach/remove any of them while trying to reproduce?

We've seen the hangs on both laptops and a desktop machine.
eDP is used on all laptops, so at least eDP is always connected/used.
I forgot about the detail of desktop, but it doesn't have eDP, at least.

It happens without attaching/removing connections.  Boot a laptop with eDP
only, try S4 a few times, and it hangs.

> - Do you have X running when you suspend?

In most test cases, yes.  It's GNOME 2.6 with compiz.
But the hang happened without X, too.

> - How do you suspend? By clicking on some interface or running some specific
> command?

Then hang happens all cases.  No matter whether the suspend through the button
(via pm-suspend), the direct kernel suspend, or via user-space suspend.

> - Do you suspend from X or do you vt switch away before doing that?

When pm-utils hook is running, yes, it's switched to VT1 before doing suspend.
But the crash happens even without it by just writing /sys/power/disk on a X
terminal.

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