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Date:      Mon, 17 Nov 2014 21:21:11 +0300
From:      Chagin Dmitry <dchagin@freebsd.org>
To:        Eric McCorkle <eric@metricspace.net>;, jhb@freebsd.org
Cc:        "freebsd-acpi@freebsd.org" <freebsd-acpi@freebsd.org>, "freebsd-mobile@freebsd.org" <freebsd-mobile@freebsd.org>
Subject:   Re: Lenovo W540 blank screen on suspend/resume after update
Message-ID:  <20141117182111.GA2477@dchagin.static.corbina.net>
In-Reply-To: <C0B09693-F50C-461B-942E-700E90A16535@metricspace.net>
References:  <54652C60.9050909@metricspace.net> <CAJ-VmokpzRd7hk42NtRWPsCwD1pm_n8kpS4Q7hkbVCgJ7rPpKQ@mail.gmail.com> <20141114161857.GA49507@dchagin.static.corbina.net> <C0B09693-F50C-461B-942E-700E90A16535@metricspace.net>

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On Fri, Nov 14, 2014 at 03:33:26PM -0500, Eric McCorkle wrote:
> Sorry, don't remember the working version.
>=20
> I have acpi_video compiled in to my kernel. I've tried it with both vt an=
d sc and gotten the same result.=20
>=20
> Might try to do more diagnostics this weekend.=20
>=20
> On November 14, 2014 11:18:57 AM EST, Chagin Dmitry <dchagin@freebsd.org>=
 wrote:
> >On Thu, Nov 13, 2014 at 02:13:35PM -0800, Adrian Chadd wrote:
> >> Hi,
> >>=20
> >> Does it stay blank if you have acpi_video (+ vt) loaded?
> >>=20
> >> What was the revision of 11 you were previously running?
> >>=20
> >>=20
> >>=20
> >> -adrian
> >>=20
> >>=20
> >> On 13 November 2014 14:10, Eric McCorkle <eric@metricspace.net>
> >wrote:
> >> > Hello,
> >> >
> >> > I updated my kernel and userland with a fresh update from 11
> >yesterday, and
> >> > I'm now seeing a blank screen after suspend/resume, where it was
> >working
> >> > fine previously.
> >> >
> >> > I had been trying out the new vt console, so I switched back to sc,
> >but the
> >> > blank screen is still there.
> >> >
> >> > Sorry, I don't have any information beyond this (quite busy these
> >days).
> >> >
> >> > Eric
> >
> >
> >Lenovo t540, same here. r274463 + sc. resume worked two weeks ago.
> >
> >
> >--=20
> >Have fun!
> >chd
>=20

try attached patch. it seems we should take a close look to other
PCIB_POWER_FOR_SLEEP() calls.=20

--=20
Have fun!
chd

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