[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Changed in: mutter (Ubuntu Bionic)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

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  144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Tyler Alexander Driggers]

** Changed in: mutter (Ubuntu Bionic)
 Assignee: Daniel van Vugt (vanvugt) => Tyler Alexander Driggers (exderia)

** Changed in: mutter (Ubuntu Bionic)
 Assignee: Tyler Alexander Driggers (exderia) => (unassigned)

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  144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Launchpad Bug Tracker]

This bug was fixed in the package mutter - 3.28.4-0ubuntu18.04.1

---
mutter (3.28.4-0ubuntu18.04.1) bionic; urgency=medium

  * New upstream release:
- Implement keycode remap to keysyms on virtual key devices (LP: #1827029)
  * d/p/monitor-manager-Don-t-use-switch-config-when-ensuring-con.patch,
d/p/monitor-manager-use-MonitorsConfig-to-track-switch_config.patch:
- Ensure switch display mode is cyclic (LP: #1772811)

  [ Daniel van Vugt ]
  * d/p/lp1763892-a-renderer-native-Add-hardware-presentation-timing.patch,
d/p/lp1763892-b-renderer-native-Advertise-_FEATURE_SWAP_THROTTLE.patch:
- Add support for high frame rate displays (LP: #1763892)
  * d/p/clutter-Smooth-out-master-clock-to-smooth-visuals.patch:
- Dropped

  [ Iain Lane ]
  * Update symbols file for *_switch_config.
These are added as a backport in this update. They are available in
subsequent releases (so generated deps should keep working fine).

 -- Marco Trevisan (Treviño)   Tue, 07 May 2019
18:05:21 +0100

** Changed in: mutter (Ubuntu Bionic)
   Status: Fix Committed => Fix Released

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  144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Fix verified on bionic (both Xorg and Wayland sessions) using mutter
version 3.28.4-0ubuntu18.04.1

** Tags removed: verification-needed verification-needed-bionic
** Tags added: verification-done verification-done-bionic

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  144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

The test case passes, and gnome-shell reaches 120Hz for me. But it's not
as smooth and reliable as I would like in Xorg sessions. I think
https://gitlab.gnome.org/GNOME/mutter/merge_requests/520 will fix that
in the coming months.

But don't be confused, this bug is now definitely fixed in bionic
proposed.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Brian Murray]

Hello Knut, or anyone else affected,

Accepted mutter into bionic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/mutter/3.28.4-0ubuntu18.04.1 in a
few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Tags removed: verification-done
** Tags added: verification-needed verification-needed-bionic

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Changed in: mutter (Ubuntu Bionic)
   Status: In Progress => Fix Committed

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Launchpad Bug Tracker]

** Merge proposal linked:
   
https://code.launchpad.net/~3v1n0/ubuntu/+source/mutter/+git/mutter/+merge/366676

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[dreamcat4]

Thank you Daniel. The new bug is
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1820832

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Argh, sorry again. Bug 1730460 and one of the above links are about
Wayland sessions only. Please open a new bug for Xorg.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Argh, sorry again. Bug 1730460 and the above links are about Wayland
sessions only. Please open a new bug for Xorg.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Sorry, this is an issue I should have foreseen and warned people about.
This bug is not about multiple monitors, it is about the single monitor
case only.

I know multi-monitor systems have an additional problem which is best
captured upstream in:

  https://gitlab.gnome.org/GNOME/mutter/merge_requests/73
  https://gitlab.gnome.org/GNOME/mutter/issues/503

I think all further discussion about multi-monitor performance should be
in bug 1730460 which is the Launchpad equivalent of the above two links.

** Bug watch added: gitlab.gnome.org/GNOME/mutter/issues #503
   https://gitlab.gnome.org/GNOME/mutter/issues/503

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[dreamcat4]

Hello again. Well this is promising news. Because I am also using xorg
with multiple monitors. And observing the same exact issue. Taking that
discussion over to the other bug then.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Mitchell Clifford]

I'm using Xorg with an AMD Vega 64.  Both displays are connected to the
GPU.  My main 144hz display is connected via Display Port, and my second
60hz display is connected via HDMI.

I'm using Mesa 19.1.0-devel - padoka PPA

When I perform the test case in the first post, I get high framerates
when the secondary display is disabled, and only 60 fps when it's
enabled.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

I forgot to mention that multi-monitors still won't work properly in
Wayland sessions. You'll only get the speed of the slowest monitor. But
a fix for that is coming eventually:

  https://gitlab.gnome.org/GNOME/mutter/merge_requests/73

If you experience the problem in Xorg then that's a new problem. But if
true then we could reword bug 1730460 to include that, and discuss it
there.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[dreamcat4]

> I'm on 18.10 with dual monitors, and I'm still capped at 60hz on my
144hz display. However, if I disable my second display (it only supports
60hz), I my main gets 144hz as expected.

Is that with both dislays attached to an nvidia graphics card ? If so,
then what version of the nvidia driver, and linux kernel (dmesg | grep
-i nvidia && uname -a).

Another interesting thing (for multi-monitor users) is to see if the
same thing happens with both of the monitors connected off of the intel
integrated graphics (motherboard ports) instead. (Should that be an
option, for these testing / debugging purposes).

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Mitchell Clifford]

I'm on 18.10 with dual monitors, and I'm still capped at 60hz on my
144hz display.  However, if I disable my second display (it only
supports 60hz), I my main gets 144hz as expected.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Knut Sindre Åbjørsbråten]

Hi. On 18.10 with proposed enabled the screen now renders at > 60 Hz and
feels smooth (:  This fixes the issue for me. Thank you for you hard
work guys.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Also affects: mutter (Ubuntu Disco)
   Importance: Medium
 Assignee: Daniel van Vugt (vanvugt)
   Status: Fix Released

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Re: [Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Simen Aas Henriksen]

Still a massive upgrade for me. Ive been working in Windows for the last 10
years with FPS/Hz ranging from 100-240. Loving ubuntu, but it feels so
choppy right now.

Cheers Daniel.

ons. 13. mar. 2019 kl. 09:50 skrev Daniel van Vugt <
daniel.van.v...@canonical.com>:

> A few caveats to remember though:
>
>  * In Wayland sessions, if the screen is idle then the mouse cursor will
> slow to 60Hz (https://gitlab.gnome.org/GNOME/mutter/issues/406)
>
>  * Removing the 60Hz limit doesn't mean everything will happen at full
> frame rate. There are many reasons why (https://trello.com/c/Q6JYXPPs)
>
>  * Firefox seems to have its own 60Hz limit built-in. Chrome/Chromium
> has no such limit.
>
> ** Bug watch added: gitlab.gnome.org/GNOME/mutter/issues #406
>https://gitlab.gnome.org/GNOME/mutter/issues/406
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1763892
>
> Title:
>   144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS
>
> Status in Mutter:
>   Fix Released
> Status in mutter package in Ubuntu:
>   Fix Released
> Status in mutter source package in Bionic:
>   In Progress
> Status in mutter source package in Cosmic:
>   Fix Released
>
> Bug description:
>   [Impact]
>
>   Gnome Shell redraws at 60 FPS at most, regardless of the hardware
>   refresh rate, and regardless of the current display mode. This is
>   particularly annoying for owners of 144Hz/120Hz/240Hz displays.
>
>   [Test Case]
>
>   0. Find a monitor or laptop with a high refresh rate (120Hz or more),
>   noting NOT to trust gnome-control-center or xrandr because an
>   unrelated bug in mutter may cause those to report 120Hz even on 60Hz
>   displays. Make sure the advertised hardware specs show the display is
>   a high frame rate.
>
>   1. Edit /etc/environment and add:
>  CLUTTER_SHOW_FPS=1
>
>   2. Reboot.
>
>   3. Open a terminal window and run:
>  journalctl -f | grep FPS
>
>   4. In a new window run 'glmark2' or some other OpenGL benchmark that
>   is not frame rate limited (note: glxgears for unrelated reasons IS
>   frame rate limited in Wayland sessions, but can be used in Xorg
>   sessions).
>
>   5. Verify the terminal window from step 4 shows high FPS values coming
>   from the journalctl log that match the hardware spec, and are much
>   higher than 60.
>
>   [Regression Potential]
>
>   Medium to low. This patch has been used upstream and in Ubuntu 19.04
>   for some months already without any issues. Although minor syntactical
>   changes had to be made to avoid conflicts when backporting it from
>   mutter 3.32 to mutter 3.30. If regressions did occur they would be
>   visible in the frame rate of the entire screen.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/mutter/+bug/1763892/+subscriptions
>
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*Med vennlig hilsen / Best regards*


*Simen Henriksen*Digital Marketing Consultant

*www.simenhenriksen.no *

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

A few caveats to remember though:

 * In Wayland sessions, if the screen is idle then the mouse cursor will
slow to 60Hz (https://gitlab.gnome.org/GNOME/mutter/issues/406)

 * Removing the 60Hz limit doesn't mean everything will happen at full
frame rate. There are many reasons why (https://trello.com/c/Q6JYXPPs)

 * Firefox seems to have its own 60Hz limit built-in. Chrome/Chromium
has no such limit.

** Bug watch added: gitlab.gnome.org/GNOME/mutter/issues #406
   https://gitlab.gnome.org/GNOME/mutter/issues/406

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Re: [Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Simen Aas Henriksen]

Excited! Cant wait.

ons. 13. mar. 2019 kl. 09:15 skrev Daniel van Vugt <
daniel.van.v...@canonical.com>:

> Bionic fix on the way:
>
> https://code.launchpad.net/~vanvugt/ubuntu/+source/mutter/+git/mutter/+merge/364362
>
> ** Merge proposal linked:
>
> https://code.launchpad.net/~vanvugt/ubuntu/+source/mutter/+git/mutter/+merge/364362
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1763892
>
> Title:
>   144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS
>
> Status in Mutter:
>   Fix Released
> Status in mutter package in Ubuntu:
>   Fix Released
> Status in mutter source package in Bionic:
>   In Progress
> Status in mutter source package in Cosmic:
>   Fix Released
>
> Bug description:
>   [Impact]
>
>   Gnome Shell redraws at 60 FPS at most, regardless of the hardware
>   refresh rate, and regardless of the current display mode. This is
>   particularly annoying for owners of 144Hz/120Hz/240Hz displays.
>
>   [Test Case]
>
>   0. Find a monitor or laptop with a high refresh rate (120Hz or more),
>   noting NOT to trust gnome-control-center or xrandr because an
>   unrelated bug in mutter may cause those to report 120Hz even on 60Hz
>   displays. Make sure the advertised hardware specs show the display is
>   a high frame rate.
>
>   1. Edit /etc/environment and add:
>  CLUTTER_SHOW_FPS=1
>
>   2. Reboot.
>
>   3. Open a terminal window and run:
>  journalctl -f | grep FPS
>
>   4. In a new window run 'glmark2' or some other OpenGL benchmark that
>   is not frame rate limited (note: glxgears for unrelated reasons IS
>   frame rate limited in Wayland sessions, but can be used in Xorg
>   sessions).
>
>   5. Verify the terminal window from step 4 shows high FPS values coming
>   from the journalctl log that match the hardware spec, and are much
>   higher than 60.
>
>   [Regression Potential]
>
>   Medium to low. This patch has been used upstream and in Ubuntu 19.04
>   for some months already without any issues. Although minor syntactical
>   changes had to be made to avoid conflicts when backporting it from
>   mutter 3.32 to mutter 3.30. If regressions did occur they would be
>   visible in the frame rate of the entire screen.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/mutter/+bug/1763892/+subscriptions
>
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*Med vennlig hilsen / Best regards*


*Simen Henriksen*Digital Marketing Consultant

*www.simenhenriksen.no *

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Bionic fix on the way:
https://code.launchpad.net/~vanvugt/ubuntu/+source/mutter/+git/mutter/+merge/364362

** Merge proposal linked:
   
https://code.launchpad.net/~vanvugt/ubuntu/+source/mutter/+git/mutter/+merge/364362

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Changed in: mutter (Ubuntu Bionic)
   Status: Triaged => In Progress

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  144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Simen Aas Henriksen]

You are a living legend Daniel. Thank you for your work :)

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Yes I will be backporting the same fix to bionic. At least I will try
to. I don't know what conflicts and incompatibilities might be in mutter
3.28.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Simen Aas Henriksen]

@Łukasz

Will you not be following/patching bionic with this fix? (@Daniel)

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Łukasz Zemczak]

I think we can assume that at least the mutter cosmic SRU does not
introduce regressions and does fix the bug for certain testers. In case
there's a follow-up fix needed, please file a separate bug.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Launchpad Bug Tracker]

This bug was fixed in the package mutter - 3.30.2-1~ubuntu18.10.4

---
mutter (3.30.2-1~ubuntu18.10.4) cosmic; urgency=medium

  * Add support for high frame rate displays (LP: #1763892):
- Drop clutter-Smooth-out-master-clock-to-smooth-visuals.patch
- Add lp1763892-a-renderer-native-Add-hardware-presentation-timing.patch
- Add lp1763892-b-renderer-native-Advertise-_FEATURE_SWAP_THROTTLE.patch

 -- Daniel van Vugt   Thu, 28 Feb 2019
17:43:10 +

** Changed in: mutter (Ubuntu Cosmic)
   Status: Fix Committed => Fix Released

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[dreamcat4]

there is also this:

https://github.com/solus-project/budgie-desktop/pull/1591

however just not sure if it's something that they need to rebuild there
also with these changes

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Rachel,

Please use the test case at the top of the bug.

There are also other bugs which may make mutter appear to not render at
full speed. Most notably:

  https://gitlab.gnome.org/GNOME/mutter/issues/406

but also most of:

  https://trello.com/c/Q6JYXPPs

You need to be careful to not confuse this bug for those others.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Rachel]

mutter 3.30.2-1~ubuntu18.10.4 doesn't appear to solve this issue in
ubuntu budgie.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Verified on cosmic that mutter version 3.30.2-1~ubuntu18.10.4 has fixed
this bug.

** Tags removed: verification-needed verification-needed-cosmic
** Tags added: verification-done verification-done-cosmic

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Stephen Turley]

Confirmed fixed in Pop_OS 18.10 using the test case provided.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[dreamcat4]

Installed new mutter from proposed today and... Well it didn't crash my
system. Due to other complications (which were mentioned previously in
may last comment)/ I cannot confirm if it actually fixes the 120/144hz
issue in my specific environment. However the changes seems safe enough
to me. Hopefully others can also install / confirm / deny.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Timo Aaltonen]

Hello Knut, or anyone else affected,

Accepted mutter into cosmic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/mutter/3.30.2-1~ubuntu18.10.4 in a
few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-cosmic to verification-done-cosmic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-cosmic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: mutter (Ubuntu Cosmic)
   Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-cosmic

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Sebastien Bacher]

** Changed in: mutter (Ubuntu Bionic)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Correction:
https://code.launchpad.net/~vanvugt/ubuntu/+source/mutter/+git/mutter/+merge/363599

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Merge proposal linked:
   
https://code.launchpad.net/~vanvugt/ubuntu/+source/mutter/+git/mutter/+merge/363599

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Simen Aas Henriksen]

When do you expect to get into Bionic?

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Cosmic branch prepared:
https://code.launchpad.net/~vanvugt/mutter/+git/mutter/+ref/fix-lp1763892-cosmic

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Description changed:

  [Impact]
  
  Gnome Shell redraws at 60 FPS at most, regardless of the hardware
  refresh rate, and regardless of the current display mode. This is
  particularly annoying for owners of 144Hz/120Hz/240Hz displays.
  
  [Test Case]
  
- TODO: Use env var to verify?
+ 0. Find a monitor or laptop with a high refresh rate (120Hz or more),
+ noting NOT to trust gnome-control-center or xrandr because an unrelated
+ bug in mutter may cause those to report 120Hz even on 60Hz displays.
+ Make sure the advertised hardware specs show the display is a high frame
+ rate.
+ 
+ 1. Edit /etc/environment and add:
+CLUTTER_SHOW_FPS=1
+ 
+ 2. Reboot.
+ 
+ 3. Open a terminal window and run:
+journalctl -f | grep FPS
+ 
+ 4. Move the window around in rapid circles for 10 seconds or so.
+ 
+ 5. Verify it shows high FPS values closer to the hardware spec than 60.
+ 
+ 6. If you are unsure of the result, try again using a USB mouse instead
+ of the touchpad so as to ensure your input is also at a high rate (some
+ laptops have slow touchpads but it generally should not be a problem on
+ laptops with high refresh rate displays).
  
  [Regression Potential]
  
  Medium to low. This patch has been used upstream and in Ubuntu 19.04 for
  some months already without any issues. Although minor syntactical
  changes had to be made to avoid conflicts when backporting it from
  mutter 3.32 to mutter 3.30.

** Description changed:

  [Impact]
  
  Gnome Shell redraws at 60 FPS at most, regardless of the hardware
  refresh rate, and regardless of the current display mode. This is
  particularly annoying for owners of 144Hz/120Hz/240Hz displays.
  
  [Test Case]
  
  0. Find a monitor or laptop with a high refresh rate (120Hz or more),
  noting NOT to trust gnome-control-center or xrandr because an unrelated
  bug in mutter may cause those to report 120Hz even on 60Hz displays.
  Make sure the advertised hardware specs show the display is a high frame
  rate.
  
  1. Edit /etc/environment and add:
-CLUTTER_SHOW_FPS=1
+    CLUTTER_SHOW_FPS=1
  
  2. Reboot.
  
  3. Open a terminal window and run:
-journalctl -f | grep FPS
+    journalctl -f | grep FPS
  
  4. Move the window around in rapid circles for 10 seconds or so.
  
  5. Verify it shows high FPS values closer to the hardware spec than 60.
  
  6. If you are unsure of the result, try again using a USB mouse instead
  of the touchpad so as to ensure your input is also at a high rate (some
  laptops have slow touchpads but it generally should not be a problem on
  laptops with high refresh rate displays).
  
+ 7. If you are still unsure of the result, replace step 4 with simply
+ running 'glxgears' or similar.
+ 
  [Regression Potential]
  
  Medium to low. This patch has been used upstream and in Ubuntu 19.04 for
  some months already without any issues. Although minor syntactical
  changes had to be made to avoid conflicts when backporting it from
  mutter 3.32 to mutter 3.30.

** Description changed:

  [Impact]
  
  Gnome Shell redraws at 60 FPS at most, regardless of the hardware
  refresh rate, and regardless of the current display mode. This is
  particularly annoying for owners of 144Hz/120Hz/240Hz displays.
  
  [Test Case]
  
  0. Find a monitor or laptop with a high refresh rate (120Hz or more),
  noting NOT to trust gnome-control-center or xrandr because an unrelated
  bug in mutter may cause those to report 120Hz even on 60Hz displays.
  Make sure the advertised hardware specs show the display is a high frame
  rate.
  
  1. Edit /etc/environment and add:
     CLUTTER_SHOW_FPS=1
  
  2. Reboot.
  
  3. Open a terminal window and run:
     journalctl -f | grep FPS
  
- 4. Move the window around in rapid circles for 10 seconds or so.
+ 4. In a new window run 'glxgears' or some other OpenGL benchmark.
  
- 5. Verify it shows high FPS values closer to the hardware spec than 60.
- 
- 6. If you are unsure of the result, try again using a USB mouse instead
- of the touchpad so as to ensure your input is also at a high rate (some
- laptops have slow touchpads but it generally should not be a problem on
- laptops with high refresh rate displays).
- 
- 7. If you are still unsure of the result, replace step 4 with simply
- running 'glxgears' or similar.
+ 5. Verify the terminal window from step 4 shows high FPS values coming
+ from the journalctl log that match the hardware spec, and are much
+ higher than 60.
  
  [Regression Potential]
  
  Medium to low. This patch has been used upstream and in Ubuntu 19.04 for
  some months already without any issues. Although minor syntactical
  changes had to be made to avoid conflicts when backporting it from
  mutter 3.32 to mutter 3.30.

** Description changed:

  [Impact]
  
  Gnome Shell redraws at 60 FPS at most, regardless of the hardware
  refresh rate, and regardless of the current display mode. This is
  particularly annoying for owners of 144Hz/120Hz/240Hz displays.
  
  [Test Case]
  
  0. 

[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Description changed:

- Monitor is set to 144hz, but on Wayland it visually fails to go above
- 60Hz. I have confirmed the monitor is running at 144Hz during the
- Wayland session, and that is also the setting in the Settings control
- panel.
+ [Impact]
  
- Using the additional NVidia drivers installed using the Ubuntu software
- control panel.
+ Gnome Shell redraws at 60Hz at most, regardless of the hardware refresh
+ rate, and regardless of the current display mode. This is particularly
+ annoying for owners of 144Hz/120Hz/240Hz displays.
  
- ProblemType: Bug
- DistroRelease: Ubuntu 17.10
- Package: libwayland-bin (not installed)
- ProcVersionSignature: Ubuntu 4.13.0-38.43-generic 4.13.16
- Uname: Linux 4.13.0-38-generic x86_64
- ApportVersion: 2.20.7-0ubuntu3.8
- Architecture: amd64
- CompositorRunning: None
- CurrentDesktop: ubuntu:GNOME
- Date: Sat Apr 14 08:43:29 2018
- DistUpgraded: Fresh install
- DistroCodename: artful
- DistroVariant: ubuntu
- GraphicsCard:
-  NVIDIA Corporation GP104 [GeForce GTX 1070] [10de:1b81] (rev a1) (prog-if 00 
[VGA controller])
-    Subsystem: Micro-Star International Co., Ltd. [MSI] GP104 [GeForce GTX 
1070] [1462:3301]
- InstallationDate: Installed on 2018-03-30 (14 days ago)
- InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
- MachineType: System manufacturer System Product Name
- ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-38-generic.efi.signed 
root=UUID=4f8fe8e2-8445-4034-bae3-dc8afb789c64 ro quiet splash vt.handoff=7
- SourcePackage: wayland
- UpgradeStatus: No upgrade log present (probably fresh install)
- dmi.bios.date: 01/11/2018
- dmi.bios.vendor: American Megatrends Inc.
- dmi.bios.version: 0610
- dmi.board.asset.tag: Default string
- dmi.board.name: PRIME Z370-P
- dmi.board.vendor: ASUSTeK COMPUTER INC.
- dmi.board.version: Rev X.0x
- dmi.chassis.asset.tag: Default string
- dmi.chassis.type: 3
- dmi.chassis.vendor: Default string
- dmi.chassis.version: Default string
- dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0610:bd01/11/2018:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEZ370-P:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
- dmi.product.family: To be filled by O.E.M.
- dmi.product.name: System Product Name
- dmi.product.version: System Version
- dmi.sys.vendor: System manufacturer
- version.compiz: compiz N/A
- version.libdrm2: libdrm2 2.4.83-1
- version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~17.10.1
- version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~17.10.1
- version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
- version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
- version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
- version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20170309-0ubuntu1
- version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
+ [Test Case]
+ 
+ TODO: Use env var to verify?
+ 
+ [Regression Potential]
+ 
+ Medium to low. This patch has been used upstream and in Ubuntu 19.04 for
+ some months already without any issues. Although minor syntactical
+ changes had to be made to avoid conflicts when backporting it from
+ mutter 3.32 to mutter 3.30.

** Description changed:

  [Impact]
  
- Gnome Shell redraws at 60Hz at most, regardless of the hardware refresh
- rate, and regardless of the current display mode. This is particularly
- annoying for owners of 144Hz/120Hz/240Hz displays.
+ Gnome Shell redraws at 60 FPS at most, regardless of the hardware
+ refresh rate, and regardless of the current display mode. This is
+ particularly annoying for owners of 144Hz/120Hz/240Hz displays.
  
  [Test Case]
  
  TODO: Use env var to verify?
  
  [Regression Potential]
  
  Medium to low. This patch has been used upstream and in Ubuntu 19.04 for
  some months already without any issues. Although minor syntactical
  changes had to be made to avoid conflicts when backporting it from
  mutter 3.32 to mutter 3.30.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[dreamcat4]

Thanks Daniel for your recent comments. They are very helpful. As
someone who upgraded to Cosmic specifically to fix this bug. I found it
still wasn't working and simple was not sure the reason (as have other
factors at play on my system, including Budgie Desktop, multiple
monitors, and nvidia card with the closed 415.xx drivers). And even
after switching to intel igp (and physically removing my nvidia graphics
card), loading up Gnome 3 / unity desktop instead of budgie, and
physically disconnecting my 2nd 60hz TV. The original 'remove patch' +
CLUTTER_FPS env var still was not changing anything. My xrandr output is
claiming 120hz (for acer x34p monitor). However it's still mouse trails
and not feeling 120hz.

However my other factor of uncertainty is having a very low powered gpu
(GT 1030 pascal). However that should be enough? for just regular
desktop. Without anything more taxing

Basically I don't want to spend hundreds of pounds on a more powerful
graphics card if it cannot properly drive at high refresh rates on linux
for these other reasons. So these fixes are potentially very important
to me in respect of that future hardware buying decision.

So yes... am very much looking forward to trying out any new fixes being
targeted for cosmic. To find out if they can help anything further.
Thank you for these continued efforts towards solving this problem
Daniel.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

I am aiming to get the fix(es) into cosmic before bionic.

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  144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Oops. I forgot about that regression which broke it on Xorg. And that
old patch needs to be removed to get Xorg up above 60Hz.

** Also affects: mutter (Ubuntu Bionic)
   Importance: Undecided
   Status: New

** Changed in: mutter (Ubuntu Bionic)
   Status: New => Triaged

** Changed in: mutter (Ubuntu Bionic)
   Importance: Undecided => Medium

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Still working on getting the fix into cosmic first.

Although it's easy to forget this bug is for Wayland only. In theory
Xorg sessions don't need fixing. In practice though, I find 120Hz
displays sometimes need a lot of encouragement to go above 60Hz even on
Xorg. I think that problem is a general performance one, which might be
fixed by:

https://gitlab.gnome.org/GNOME/mutter/merge_requests/281

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Marius Acniz]

Hi Daniel van Vugt, would you be kind enough to let us know how to apply this 
patch and compile mutter from source. Thank you,
Marius.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Danilo Cominotti Marques]

Nothing about Bionic yet? Still need the "CLUTTER_DEFAULT_FPS"
workaround.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Changed in: mutter (Ubuntu Cosmic)
   Status: Triaged => In Progress

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

I've generated a fresh patch for 3.30 based on the final upstream
commits in 3.32:

  https://gitlab.gnome.org/GNOME/mutter/merge_requests/318.patch

It's functionally identical to what's already in disco. I wouldn't
bother updating the disco patch though since it changes nothing
functional and disco should get 3.32 eventually anyway.

So the above link is intended for cosmic.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Bug Watch Updater]

** Changed in: mutter
   Status: Confirmed => Fix Released

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Changed in: mutter (Ubuntu Cosmic)
   Status: Fix Released => Triaged

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Justin]

** Changed in: mutter (Ubuntu Cosmic)
   Status: Triaged => Fix Released

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

mutter (3.30.2-2) unstable; urgency=medium

  [ Daniel van Vugt ]
  * Add Sync-to-the-hardware-refresh-rate-not-just-60.00Hz.patch to render at
the full monitor refresh rate (LP: #1763892).

  [ Jeremy Bicha ]
  * debian/libmutter-3-0.symbols: Mark a Wacom symbol as linux-any

  [ Patrice Duroux ]
  * add back lost NEWS (Closes: #914942)

 -- Iain Lane   Thu, 29 Nov 2018 17:29:57 +

** Changed in: mutter (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Yes I certainly aim to get the fix into 18.04 eventually. This counts as
a hardware enablement bug so it shouldn't be a problem. The only delay
is that we need to ensure the fix(es) are in 19.04 and 18.10 first.

If you're only using Xorg then you only need one of the fixes, which is
to drop clutter-Smooth-out-master-clock-to-smooth-visuals.patch from the
mutter source. If you know how to do that then great, otherwise you will
need to wait for the official update, sorry.

P.S. Can someone please accept the above nomination for bionic?

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[dreamcat4]

Hi there. Sorry but I'm a bit confused as to which branches will be
getting this fix and which ones will not be. Specifically I as wondering
if a fix might be back-ported to 18.04. Because I need to stay on LTS
release for the canonical kernel live patching service. Otherwise I
really would not mind upgrading. Not using wayland over here just xorg.
Here is my mutter version. And my Ubuntu software updater says 'no new
updates'...

 $ sudo apt search mutter | grep -i mutter

WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.

gir1.2-mutter-2/bionic-updates,now 3.28.3-2~ubuntu18.04.2 amd64 [installed]
  GObject introspection data for Mutter
libmutter-2-0/bionic-updates,now 3.28.3-2~ubuntu18.04.2 amd64 [installed]
  window manager library from the Mutter window manager
libmutter-2-dev/bionic-updates,now 3.28.3-2~ubuntu18.04.2 amd64 
[installed,automatic]
  Development files for the Mutter window manager
mutter/bionic-updates,now 3.28.3-2~ubuntu18.04.2 amd64 [installed]
mutter-common/bionic-updates,bionic-updates,now 3.28.3-2~ubuntu18.04.2 all 
[installed]
  shared files for the Mutter window manager

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  144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Changed in: mutter (Ubuntu Cosmic)
   Importance: Undecided => Medium

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Yes, removing the change from the SRU would resolve the problem,
weirdly. Though without fixing the bug.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Iain Lane]

That fix doesn't appear to be merged upstream.

Why are you not comfortable about what I proposed?

I will remove the change from the SRU, then.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Tags removed: artful
** Tags added: bionic cosmic disco

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Here's the final missing piece:
https://salsa.debian.org/gnome-team/mutter/merge_requests/20

** Changed in: mutter (Ubuntu Cosmic)
   Status: In Progress => Triaged

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Yeah this bug started out as just being about Wayland so I don't feel
comfortable making this bug just about the Xorg case now.

There is a solution though. Just add the Wayland fix in:

  https://gitlab.gnome.org/GNOME/mutter/merge_requests/171

It may require some backporting to 3.30 as of recently, but I am happy
to do so.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Iain Lane]

I should say:

> We are proposing taking the version of mutter from disco for an SRU,
and it has the above patch.

For that this bug needs to be considered to be fixed in the development
release, and fixed by the SRU.

If we split it into "wayland" and "Xorg" halves, we could do that.

I know the bug was initially reported as a Wayland bug though, so it is
slightly annoying to do that. Hopefully you will be OK with overlooking
that, and making this the Xorg bug.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Iain Lane]

Can we please use a different bug for Wayland?

We are proposing taking the version of mutter from disco for an SRU, and
it has the above patch.

Could you please also write an SRU template for this bug?

** Also affects: mutter (Ubuntu Cosmic)
   Importance: Undecided
   Status: New

** Changed in: mutter (Ubuntu Cosmic)
   Status: New => In Progress

** Changed in: mutter (Ubuntu Cosmic)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Hmm, that's not quite right. The Xorg fix has landed, but the Wayland
fix has not. Both require changes to mutter.

** Changed in: mutter (Ubuntu)
   Status: Fix Released => In Progress

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Launchpad Bug Tracker]

This bug was fixed in the package mutter - 3.30.1-4

---
mutter (3.30.1-4) unstable; urgency=medium

  [ Andrea Azzarone ]
  * d/p/x11-close-display-in-an-idle-function.patch:
- close the x11 display in an idle function. This fixes a crash when running
  'gnome-shell --replace'.

  [ Daniel van Vugt]
  * Drop clutter-Smooth-out-master-clock-to-smooth-visuals.patch: It was
abandoned upstream, but also seems to be limiting refresh rates in
Xorg sessions to 60Hz when previously they were unlimited (LP: #1763892).

 -- Andrea Azzarone   Mon, 12 Nov 2018
11:53:37 +

** Changed in: mutter (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Proposed fix for Xorg sessions:
https://salsa.debian.org/gnome-team/mutter/merge_requests/19

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

Verified on a 120Hz display that Xorg sessions only need clutter-Smooth-
out-master-clock-to-smooth-visuals.patch removed to fix this.

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

** Description changed:

  Monitor is set to 144hz, but on Wayland it visually fails to go above
- 60Hz.  On XOrg it  runs higher and feels much smoother.  I have
- confirmed the monitor is running at 144Hz during the Wayland session,
- and that is also the setting in the Settings control panel.
+ 60Hz. I have confirmed the monitor is running at 144Hz during the
+ Wayland session, and that is also the setting in the Settings control
+ panel.
  
  Using the additional NVidia drivers installed using the Ubuntu software
  control panel.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: libwayland-bin (not installed)
  ProcVersionSignature: Ubuntu 4.13.0-38.43-generic 4.13.16
  Uname: Linux 4.13.0-38-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.8
  Architecture: amd64
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Apr 14 08:43:29 2018
  DistUpgraded: Fresh install
  DistroCodename: artful
  DistroVariant: ubuntu
  GraphicsCard:
-  NVIDIA Corporation GP104 [GeForce GTX 1070] [10de:1b81] (rev a1) (prog-if 00 
[VGA controller])
-Subsystem: Micro-Star International Co., Ltd. [MSI] GP104 [GeForce GTX 
1070] [1462:3301]
+  NVIDIA Corporation GP104 [GeForce GTX 1070] [10de:1b81] (rev a1) (prog-if 00 
[VGA controller])
+    Subsystem: Micro-Star International Co., Ltd. [MSI] GP104 [GeForce GTX 
1070] [1462:3301]
  InstallationDate: Installed on 2018-03-30 (14 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
  MachineType: System manufacturer System Product Name
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-38-generic.efi.signed 
root=UUID=4f8fe8e2-8445-4034-bae3-dc8afb789c64 ro quiet splash vt.handoff=7
  SourcePackage: wayland
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/11/2018
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0610
  dmi.board.asset.tag: Default string
  dmi.board.name: PRIME Z370-P
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0610:bd01/11/2018:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEZ370-P:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.83-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~17.10.1
  version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~17.10.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20170309-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

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  144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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[Bug 1763892] Re: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

[Daniel van Vugt]

When this bug was first reported in 17.10 it was a Wayland-only bug and the fix 
for that is awaiting review:
https://gitlab.gnome.org/GNOME/mutter/merge_requests/171

However since 18.04, a patch was introduced to Ubuntu/Debian that seems
to be affecting Xorg sessions now too. So I think that also needs
removing to fix this bug: clutter-Smooth-out-master-clock-to-smooth-
visuals.patch

** Summary changed:

- 144Hz/120Hz monitor but Wayland sessions seem to cap rendering at 60FPS
+ 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS

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