Re: VSYNC problems on Fedora 21/22 and Intel HD graphics...

[drago01]

On Wed, May 27, 2015 at 10:01 PM, Chris Wilson  wrote:
> On Wed, May 27, 2015 at 03:37:29PM -0400, Alex G.S. wrote:
> > Hello,
> >    First of all I love the new GNOME 3.16 release.  The notifications and
> >    system tray icons (in the left) are great and productivity boosters.
> >    However, I'm having some issues with Intel HD graphics on X11 that make
> >    things very difficult.  Though these problems are solved by the Wayland
> >    session it's still too unstable for me to use in production as a
> >    day-to-day desktop.
> >    Hardware:
> >    Intel® Core™ i5-4200M CPU @ 2.50GHz × 4
> >    Intel® Haswell Mobile (HD 4600, i965)
> >    GNOME:
> >    Version 3.16.2
> >    Kernel:
> >    4.0.4-301.fc22.x86_64
> >    Problem:
> >    [1]https://bugzilla.gnome.org/show_bug.cgi?id=741376
> >    At work I use two external monitors in addition to the laptop screen.
> >    VSYNC often breaks when using either SNA or UXA at random intervals.  It
> >    also breaks also when I fullscreen any application in any monitor.  Even
> >    when I force VSYNC in both xorg.conf and drirc it doesn't seem to help.
> >    These are configurations for reference:
> >    /etc/environment:
> >    CLUTTER_VBLANK=True
> >    /etc/X11/xorg.conf.d/20-intel.conf
> >    Section "Device"
> >       Identifier  "Intel Graphics"
> >       Driver      "intel"
> >      Option      "AccelMethod" "sna"
> >      Option      "TearFree" "true"
> >      Option      "SwapbuffersWait" "true"
>
> Try Option "DRI" "2" in conjunction to the above.

We no longer default to DRI3 in F22.

VSYNC problems on Fedora 21/22 and Intel HD graphics...

[Alex G.S.]

> Try Option "DRI" "2" in conjunction to the above.

It worked momentarily but GNOME Shell locked up and crashed when I had an
application (Remmina) fullscreen in of the monitors.  This happens very
frequently in my experience.  GNOME just seems unstable on Intel HD 4600.
I even tried adding the following to my boot parameters but it didn't
change anything:

i915.semaphores=1

link: https://wiki.archlinux.org/index.php/Intel_graphics

On Wed, May 27, 2015 at 4:18 PM, drago01  wrote:
> On Wed, May 27, 2015 at 10:01 PM, Chris Wilson 
> wrote:
> > On Wed, May 27, 2015 at 03:37:29PM -0400, Alex G.S. wrote:
> > > Hello,
> > >    First of all I love the new GNOME 3.16 release.  The notifications
>
> and
> > > system tray icons (in the left) are great and productivity boosters.
> > >    However, I'm having some issues with Intel HD graphics on X11 that
>
> make
> > > things very difficult.  Though these problems are solved by the
>
> Wayland
> > > session it's still too unstable for me to use in production as a
> > >    day-to-day desktop.
> > >    Hardware:
> > >    Intel® Core™ i5-4200M CPU @ 2.50GHz × 4
> > >    Intel® Haswell Mobile (HD 4600, i965)
> > >    GNOME:
> > >    Version 3.16.2
> > >    Kernel:
> > >    4.0.4-301.fc22.x86_64
> > >    Problem:
> > >    [1]https://bugzilla.gnome.org/show_bug.cgi?id=741376
> > >    At work I use two external monitors in addition to the laptop screen.
> > >    VSYNC often breaks when using either SNA or UXA at random
>
> intervals.  It
> > > also breaks also when I fullscreen any application in any monitor.
>
> Even
> > > when I force VSYNC in both xorg.conf and drirc it doesn't seem to
>
> help.
> > > These are configurations for reference:
> > >    /etc/environment:
> > >    CLUTTER_VBLANK=True
> > >    /etc/X11/xorg.conf.d/20-intel.conf
> > >    Section "Device"
> > >       Identifier  "Intel Graphics"
> > >       Driver      "intel"
> > >      Option      "AccelMethod" "sna"
> > >      Option      "TearFree" "true"
> > >      Option      "SwapbuffersWait" "true"
> >
> > Try Option "DRI" "2" in conjunction to the above.
>
> We no longer default to DRI3 in F22.

VSYNC problems on Fedora 21/22 and Intel HD graphics...

[Michael Catanzaro]

On Wed, 2015-05-27 at 22:18 +0200, drago01 wrote:
> We no longer default to DRI3 in F22.

Oh yay, now I can get rid of the LIBGL_DRI3_DISABLE workaround we use
to make accelerated compositing work in Epiphany.

Any reference for why we changed that?

VSYNC problems on Fedora 21/22 and Intel HD graphics...

[drago01]

On Wed, May 27, 2015 at 11:24 PM, Michael Catanzaro
 wrote:
> On Wed, 2015-05-27 at 22:18 +0200, drago01 wrote:
> > We no longer default to DRI3 in F22.
>
> Oh yay, now I can get rid of the LIBGL_DRI3_DISABLE workaround we use
> to make accelerated compositing work in Epiphany.

Ugh ... did you ever file a bug? Adding hacks to paper over issues do
not make them go away.
> Any reference for why we changed that?

https://bugzilla.redhat.com/show_bug.cgi?id=1193742 (and it is
disabled by default upstream).

VSYNC problems on Fedora 21/22 and Intel HD graphics...

[Michael Catanzaro]

On Wed, 2015-05-27 at 23:27 +0200, drago01 wrote:
> On Wed, May 27, 2015 at 11:24 PM, Michael Catanzaro
>  wrote:
> > On Wed, 2015-05-27 at 22:18 +0200, drago01 wrote:
> > > We no longer default to DRI3 in F22.
> >
> > Oh yay, now I can get rid of the LIBGL_DRI3_DISABLE workaround we 
> > use
> > to make accelerated compositing work in Epiphany.
>
> Ugh ... did you ever file a bug? Adding hacks to paper over issues do
> not make them go away.

https://bugs.freedesktop.org/show_bug.cgi?id=85064

Adding hacks doesn't make the problem go away, but it would not have
been reasonable to ship the browser to users without the workaround.
> > Any reference for why we changed that?
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1193742 (and it is
> disabled by default upstream).

OK, so very recent change. Thanks!

VSYNC problems on Fedora 21/22 and Intel HD graphics...

[Bastien Nocera]

----- Original Message -----
> On Wed, 2015-05-27 at 23:27 +0200, drago01 wrote:
> > On Wed, May 27, 2015 at 11:24 PM, Michael Catanzaro
> >  wrote:
> > > On Wed, 2015-05-27 at 22:18 +0200, drago01 wrote:
> > > > We no longer default to DRI3 in F22.
> > >
> > > Oh yay, now I can get rid of the LIBGL_DRI3_DISABLE workaround we
> > > use
> > > to make accelerated compositing work in Epiphany.
> >
> > Ugh ... did you ever file a bug? Adding hacks to paper over issues do
> > not make them go away.
>
> https://bugs.freedesktop.org/show_bug.cgi?id=85064

And https://bugs.freedesktop.org/show_bug.cgi?id=81623

VSYNC problems on Fedora 21/22 and Intel HD graphics...

[Alex G.S.]

+Chris Wilson

I've prepped a boot log from the Journal, do you want me to attach it to
the thread or to attach it an existing/new bug report?

Thanks!

On Wed, May 27, 2015 at 7:09 PM, Bastien Nocera  wrote:
> ----- Original Message -----
> > On Wed, 2015-05-27 at 23:27 +0200, drago01 wrote:
> > > On Wed, May 27, 2015 at 11:24 PM, Michael Catanzaro
> > >  wrote:
> > > > On Wed, 2015-05-27 at 22:18 +0200, drago01 wrote:
> > > > > We no longer default to DRI3 in F22.
> > > >
> > > > Oh yay, now I can get rid of the LIBGL_DRI3_DISABLE workaround we
> > > > use
> > > > to make accelerated compositing work in Epiphany.
> > >
> > > Ugh ... did you ever file a bug? Adding hacks to paper over issues do
> > > not make them go away.
> >
> > https://bugs.freedesktop.org/show_bug.cgi?id=85064
> And https://bugs.freedesktop.org/show_bug.cgi?id=81623
>
> desktop mailing list
> [e-mail]
> https://admin.fedoraproject.org/mailman/listinfo/desktop