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Date:      Tue, 05 May 2020 14:12:08 +0000
From:      bugzilla-noreply@freebsd.org
To:        x11@FreeBSD.org
Subject:   [Bug 236003] x11-drivers/xf86-video-intel: update to 2020-04-21 snapshot and refactor
Message-ID:  <bug-236003-7141-yOH4pYrLDz@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-236003-7141@https.bugs.freebsd.org/bugzilla/>
References:  <bug-236003-7141@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236003

Samy Mahmoudi <samy.mahmoudi@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |samy.mahmoudi@gmail.com

--- Comment #52 from Samy Mahmoudi <samy.mahmoudi@gmail.com> ---
Hi,

I had set Option "DRI" "3" on two systems (Sandy Bridge, Ivy Bridge) without
setting LIBGL_DRI3_ENABLE properly. I recently upgraded the Ivy Bridge syst=
em,
so that the recent changes in graphics/mesa-libs triggered DRI 3 activation.
Here's what now happens:

After some inactivity, pressing a key powers on the monitor but the screen
keeps displaying a previous state which is anterior to the last state I let=
 the
system in before being inactive (on the Ivy Bridge system, that screen is t=
he
SLiM login manager background picture). Mouse cursor moves are still visibl=
e,
keyboard presses and mouse events are still received, but nothing renders on
screen: I can continue to use the system but can not see what happens. The =
only
way to resume normal rendering is to move my mouse to a corner which activa=
tes
the Compiz plugin Expos=C3=A9 or to switch between workspaces with another =
Compiz
plugin via a key combination.=20

By trial and error on the two systems, I have come to the conclusion that t=
his
non-critical problem only happens with the combination of intel and DRI 3 a=
nd
Compiz.

By the way, I noticed the Sandy Bridge system shows 8200 FPS in glxgears,
whereas the Ivy Bridge system (HD 4000, xorg-server-1.20.8,1 and
mesa-dri-18.3.2_10) only shows 7600 FPS. I need to upgrade the Sandy Bridge
system to see if it keeps an advantage over the Ivy Bridge system. If it do=
es
not, that would possibly mean that a performance regression happened somewh=
ere.

The Sandy Bridge system:
ThinkPad T520, HD 3000, 12.0-R with xorg-server-1.18.4_11,1 and
mesa-dri-18.3.2_3

The Ivy Bridge system:
Optiplex 7010, HD 4000, 12.1-R with xorg-server-1.20.8,1 and mesa-dri-18.3.=
2_10

Keep up the great work Jan!

--=20
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