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Date:      Sun, 7 May 2017 11:07:58 -0700
From:      Pete Wright <pete@nomadlogic.org>
To:        Mylan Connolly <mylan.connolly@gmail.com>, abi <abi@abinet.ru>
Cc:        freebsd-x11@freebsd.org
Subject:   Re: Intel Kaby Lake Support
Message-ID:  <bfb2d5d9-702b-040d-aad3-a59f83dfe376@nomadlogic.org>
In-Reply-To: <CANk4dZmDD7ObC-xUkqU6feS_eH=W8Lc3G7b_muC1EczLQOXMBw@mail.gmail.com>
References:  <CANk4dZnhTCSPkcF8DnsU86BxTnmdzVfiaz=iNbxdgWEAKLmE4Q@mail.gmail.com> <f223e38c-6145-26b1-b356-170461e576cf@nomadlogic.org> <CANk4dZnj7zyh2iFum8T8wdU_u_6fTBwYNGSHzx9PHLTHg_cH0w@mail.gmail.com> <457b9277c9ea90d24ba3620f09a5ad06@mikej.com> <CANk4dZnE19BFF8fLQDq0R8DN5zdwkq2WUb3881T3d6UM4bvj-g@mail.gmail.com> <59d50c9d-4115-7974-dafe-8b105234679c@astart.com> <CANk4dZ=AyxnG6jr-fb7dUWkirkJZv9R3G9%2BuuD83wGz2fpW6EA@mail.gmail.com> <CANk4dZm%2BhoPReJ7TkpKdZ0a4DqHhBx_r8WOFMshtvF3dpsue1A@mail.gmail.com> <590EE3CD.4030009@abinet.ru> <CANk4dZmDD7ObC-xUkqU6feS_eH=W8Lc3G7b_muC1EczLQOXMBw@mail.gmail.com>

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On 05/07/2017 05:26, Mylan Connolly wrote:
> So far this is not working and I haven't looked into it yet. I plan to
> soon, however

setting to S3 power states broke for me due to an upstream change 
recently on Kabylake.  That last working rev of drm-next on my end is: 
390597ec789

I've been going through commits since then trying to figure out what 
specifically broke but haven't made much progress. there is a thread on 
freebsd-current@ where another user is running into this issue as well.  
on my end the following sysctl knob allows me to suspend on rev 390597ec789

hw.acpi.lid_switch_state=S3

as a said tho - this is currently broken on revisions after that commit.

while you are in there setting sysctls, another knob i'd suggest setting 
is this:
dev.drm.skip_ddb=1

this will increase the chances of you entering gdb if a panic happens 
allowing you to dump a core file and assist with debugging should the 
need arise.

cheers,
-pete

-- 
Pete Wright
pete@nomadlogic.org
@nomadlogicLA




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