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

["Alex G.S." <alxgrtnstrngl gmail com>]

> 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 <drago01 gmail com> wrote:

On Wed, May 27, 2015 at 10:01 PM, Chris Wilson <chris chris-wilson co uk> 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.