Xdm isn't running, I don't boot to the GUI directly, so I tried killall xinit 
without the kern.kms_console=0.  It hangs and then needs the big switch held to 
turn power off.

Date: Mon, 10 Aug 2015 10:20:20 -0700
Subject: Re: Intel ValleyView kms console lock up
From: [email protected]
To: [email protected]
CC: [email protected]

I have seen similar issues on my Acer C720 (haswell based).  Could you run a 
test for me?

* comment out your kern.kms_console=0 line so the KMS console is enabled.

* Instead of rebooting or halting from X, as root do a 'killall xdm' to kill X.
  This should return you to a KMS console.

* Then try rebooting / shutting down from the KMS console.

What I have noticed on my Acer is two things:  First, sometimes when I start X 
up I get corruption and have to restart X to get rid of it.  But if I kldload 
i915kms first and give the kms console time to initialize, and THEN start X up, 
I never get corruption.   And Second, when I try to shutdown/reboot from X the 
laptop often locks up.  But if I killall xdm (as root) to kill X and return to 
the KMS console, and then shutdown/reboot from the KMS console, it always works 
reliably.

-Matt


On Fri, Jul 31, 2015 at 11:49 PM, Todd Hoover <[email protected]> wrote:
My Asus (Intel N2830  @ 2.16GHz) needs kern.kms_console="0" now.  Without this, 
exiting the X server will lock up tight requiring a long press of the power 
button.  With kms_console off, it shuts down with a black screen on the way, 
but it shuts down ok!



It is running this snapshot:  DragonFly asus 4.3-DEVELOPMENT DragonFly 
v4.3.0.387.g27b6eee-DEVELOPMENT #0: Thu Jul 30 10:39:15 UTC 2015     
[email protected]:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64



The gui was installed with "pkg install xorg xfce4 xfce4-power-manager 
firefox", acpi_video is loaded and dbus is enabled.






                                          

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