xf86-video-intel-2.99.912 with dri3 enabled breaks gnome-shell

xf86-video-intel-2.99.912 with dri3 enabled breaks gnome-shell

[Hans de Goede]

Hi All,

While preparing 1.15.99.903 server + 2.99.912 intel drv packages
for Fedora 21, I noticed that both gdm and gnome-shell (tested
with startx) hang, they show the initial background screen and
then just sit there.

Building the server with --disable-dri3, or building the
intel drv with a hacked configure.ac to make it not build
with dri3 support fixes this.

Note this is with mesa 10.2.1, which has been build with xgl-dri3
support, I've double checked this.

Regards,

Hans

Re: xf86-video-intel-2.99.912 with dri3 enabled breaks gnome-shell

[Chris Wilson]

On Thu, Jun 12, 2014 at 11:16:55PM +0200, Hans de Goede wrote:
> Hi All,
> 
> While preparing 1.15.99.903 server + 2.99.912 intel drv packages
> for Fedora 21, I noticed that both gdm and gnome-shell (tested
> with startx) hang, they show the initial background screen and
> then just sit there.

Can you attach the compressed output of --enable-debug=full? I guess it
is a get-msc that ends up queuing a vblank with the wrong wakeup.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

Re: xf86-video-intel-2.99.912 with dri3 enabled breaks gnome-shell

[Chris Wilson]

On Thu, Jun 12, 2014 at 11:16:55PM +0200, Hans de Goede wrote:
> Hi All,
> 
> While preparing 1.15.99.903 server + 2.99.912 intel drv packages
> for Fedora 21, I noticed that both gdm and gnome-shell (tested
> with startx) hang, they show the initial background screen and
> then just sit there.
> 
> Building the server with --disable-dri3, or building the
> intel drv with a hacked configure.ac to make it not build
> with dri3 support fixes this.
> 
> Note this is with mesa 10.2.1, which has been build with xgl-dri3
> support, I've double checked this.

Can try starting gnome-shell with:

export CLUTTER_PAINT=disable-clipped-redraws:disable-culling

and see if that tells clutter to only do whole scene redraws and so
only update using PresentPixmap? Could you send me the debug logs with
that set in any event?
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

Re: xf86-video-intel-2.99.912 with dri3 enabled breaks gnome-shell

[Steven Newbury]

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On Thu, 2014-06-12 at 23:16 +0200, Hans de Goede wrote:
> Hi All,
> 
> While preparing 1.15.99.903 server + 2.99.912 intel drv packages
> for Fedora 21, I noticed that both gdm and gnome-shell (tested
> with startx) hang, they show the initial background screen and
> then just sit there.
> 
> Building the server with --disable-dri3, or building the
> intel drv with a hacked configure.ac to make it not build
> with dri3 support fixes this.
> 
> Note this is with mesa 10.2.1, which has been build with xgl-dri3
> support, I've double checked this.
> 

Hi Hans!
Have you got to the bottom of this?  I see the same thing, and also
possibly with GLX contexts under XWayland also with gnome-shell.  If
it's the same thing, it points to the mesa i965 DRI(3) driver side
rather than the DDX driver since it's not involved any more with
XWayland.

(using git master or latest unstable releases of relevant components)


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Re: xf86-video-intel-2.99.912 with dri3 enabled breaks gnome-shell

[Rémi Cardona]

Le jeudi 26 juin 2014 à 13:36 +0100, Steven Newbury a écrit :
> Hi Hans!
> Have you got to the bottom of this?  I see the same thing, and also
> possibly with GLX contexts under XWayland also with gnome-shell.  If
> it's the same thing, it points to the mesa i965 DRI(3) driver side
> rather than the DDX driver since it's not involved any more with
> XWayland.

FTR, I disabled DRI3 in our DDX ebuild because of this bug. IIRC, Julien
did too in Debian.

Cheers,

Rémi

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Re: xf86-video-intel-2.99.912 with dri3 enabled breaks gnome-shell

[Dave Airlie]

On 27 June 2014 07:54, Rémi Cardona <remi@gentoo.org> wrote:
> Le jeudi 26 juin 2014 à 13:36 +0100, Steven Newbury a écrit :
>> Hi Hans!
>> Have you got to the bottom of this?  I see the same thing, and also
>> possibly with GLX contexts under XWayland also with gnome-shell.  If
>> it's the same thing, it points to the mesa i965 DRI(3) driver side
>> rather than the DDX driver since it's not involved any more with
>> XWayland.
>
> FTR, I disabled DRI3 in our DDX ebuild because of this bug. IIRC, Julien
> did too in Debian.
>

this is a bug that is to be fixed in mesa, the GLX_INTEL_swap_event extension
was implemented wrongly in DRI2, and DRI3 needs to be fixed to be bug
compatible.

I'll push fix in a while once I test it.

Dave.
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