Re: Suspend hangs since 2.6.34

[Michael Tokarev]

10.06.2010 03:42, Rafael J. Wysocki ÐÐÑÐÑ:
> On Wednesday, June 09, 2010, Tino Keitel wrote:
> > Hi,
> >
> > as of kernel 2.6.34 I sometimes get a strange hang during suspend to
> > RAM. After echo mem>  /sys/power/state, the suspend script hangs, Xorg
> > eats 100% CPU, and the desktop is frozen. I can kill the script and the
> > computer will then suspend and resume fine. The kernel log shows
> > nothing interesting when the hang happens:
> >
> > usblp0: removed
> > usbcore: deregistering interface driver dvb_usb_vp7045
> > dvb-usb: Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II)
> > successfully deinitialized and disconnected.
> > PM: Syncing filesystems ... done.

Sounds very much like the problem I have with 2.6.34 final.  Did not
happen with 2.6.34-rc7 which suspended just fine, but happens quite
regularly on 2.6.34 final - not every suspend but each 2nd or 3rd
attempt.  I stopped doing suspend-to-ram due to this, because it's
unreliable.  Suspend-to-disk works just fine.

> > Is this a known problem?
>
> No, it's not.
>
> > I had rock stable suspend with 2.3.33.x. The
> > computer is a Mac mini Core2 Duo with i945 graphics. I use KMS. I will
> > compile a kernel with suspend debug to get more information if the hang
> > happens next time.

It's amd780g athlon-based machine here, with radeon graphics, also with KMS.

> Yes,  please try to get more information.

Got it ;)

/mjt
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/