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Date:      Sat, 09 May 2015 00:10:39 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 193500] Interrupt storm after loading i915kms module on Gen4 Intel GPU
Message-ID:  <bug-193500-8-8L94vIrGbR@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-193500-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-193500-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193500

wolfgang@lyxys.ka.sub.org changed:

           What    |Removed                     |Added
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                 CC|                            |wolfgang@lyxys.ka.sub.org

--- Comment #23 from wolfgang@lyxys.ka.sub.org ---
Same problem happens on a Lenovo T500 with a recent 10.1-STABLE. That machine
also uses Intel GM45 graphics.
Apparently I misunderstood how to disable msi for drm: Adding hw.drm.msi=0 to
/boot/loader.conf just results in an error message about an unknown oid,
kldload i915kms after that still results in 1 MSI being assigned and interrupts
coming in on irq16

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