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Date:      Tue, 10 May 2016 17:30:14 -0600
From:      Sergey Manucharian <sm@ara-ler.com>
To:        current@FreeBSD.org
Subject:   i915kms broken at some commit between r296485 and r297692?
Message-ID:  <20160510233014.GB1532@dendrobates.araler.com>

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I was running FreeBSD 11.0-CURRENT r292595 on ThinkPad T430 (i7-3520M,
Intel video 4000). A couple of days ago I tried to update to a fresher
version.

I've built the head revision and then a couple of more:
something has been broken somewhere between r296485 and r297692, 
I suspect namely i915kms - it won't boot: at the boot screen I see that
all modules are loaded, then after "Booting..." message at the bottom
screen turns black in 1-2 seconds of booting process, it seems to be the
point when it regularly switches to native resolution (with KMS).

Can anybody shed light on this? What can I check to get more details?

Regularly I update to the revisions used to build snapshots at: 

ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/ISO-IMAGES/11.0/

assuming that those revisions have less issues. So tried a few, none
worked for me after a certain revision from the range I mentioned above.
Now I'm on r296485.

Thanks for advices!

Sergey




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