Activity log for bug #2070438

Date Who What changed Old value New value Message
2024-06-26 06:41:55 Daniel van Vugt bug added bug
2024-06-26 06:42:06 Daniel van Vugt nominated for series Ubuntu Noble
2024-06-26 06:42:06 Daniel van Vugt bug task added mutter (Ubuntu Noble)
2024-06-26 06:42:06 Daniel van Vugt nominated for series Ubuntu Oracular
2024-06-26 06:42:06 Daniel van Vugt bug task added mutter (Ubuntu Oracular)
2024-06-26 06:42:16 Daniel van Vugt mutter (Ubuntu Oracular): assignee Jeremy BĂ­cha (jbicha)
2024-06-26 06:42:18 Daniel van Vugt mutter (Ubuntu Oracular): milestone ubuntu-24.10
2024-06-26 06:42:23 Daniel van Vugt mutter (Ubuntu Noble): status New Triaged
2024-06-26 06:42:25 Daniel van Vugt mutter (Ubuntu Noble): importance Undecided Low
2024-06-26 06:42:30 Daniel van Vugt mutter (Ubuntu Noble): assignee Daniel van Vugt (vanvugt)
2024-06-26 06:42:33 Daniel van Vugt mutter (Ubuntu Noble): milestone ubuntu-24.04.1
2024-06-26 07:03:16 Daniel van Vugt tags noble oracular triple-buffering noble oracular triple-buffering vrr
2024-06-27 05:52:11 Daniel van Vugt description [ Impact ] Fullscreen direct scanout is not used if you enable the hidden experimental VRR feature in Mutter 46. [ Test Plan ] 0. Find a monitor that is VRR capable. 1. Set MUTTER_DEBUG=kms in /etc/environment 2. Enable VRR (TODO: need to relearn all the steps required) 3. Reboot. 4. Log into a Wayland session. 5. Open Google Chrome, start an animation like https://www.vsynctester.com/ and make it full screen (F11). 6. journalctl -f /usr/bin/gnome-shell | grep Post 7. Verify the "Post" messages you see mention direct scan out and not "composite". [ Where problems could occur ] Since the fix affects the runtime decision of whether to allow triple buffering or stay double buffering, the main risk is that triple buffering wouldn't be used in some situation where we would rather have it to maintain a smoother frame rate. [ Other Info ] First reported upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_2062222 We DO NOT recommend enabling the VRR feature anyway because it is still buggy: https://gitlab.gnome.org/GNOME/mutter/-/issues/3419 [ Impact ] Fullscreen direct scanout is not used if you enable the hidden experimental VRR feature in Mutter 46. [ Test Plan ] 0. Find a monitor that is VRR capable. 1. Set MUTTER_DEBUG=kms in /etc/environment 2. Enable VRR (TODO: need to relearn all the steps required) 3. Reboot. 4. Log into a Wayland session. 5. Open Google Chrome, start an animation like https://www.vsynctester.com/ and make it full screen (F11). 6. journalctl -f /usr/bin/gnome-shell | grep Post 7. Verify the "Post" messages you see mention direct scan out and not "composite". [ Where problems could occur ] Since the fix affects the runtime decision of whether to allow triple buffering or stay double buffering, the main risk is that triple buffering wouldn't be used in some situation where we would rather have it to maintain a smoother frame rate. [ Other Info ] First reported upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_2062222 We DO NOT recommend enabling the VRR feature anyway because it is still buggy (bug 2066080)
2024-06-27 06:09:00 Daniel van Vugt description [ Impact ] Fullscreen direct scanout is not used if you enable the hidden experimental VRR feature in Mutter 46. [ Test Plan ] 0. Find a monitor that is VRR capable. 1. Set MUTTER_DEBUG=kms in /etc/environment 2. Enable VRR (TODO: need to relearn all the steps required) 3. Reboot. 4. Log into a Wayland session. 5. Open Google Chrome, start an animation like https://www.vsynctester.com/ and make it full screen (F11). 6. journalctl -f /usr/bin/gnome-shell | grep Post 7. Verify the "Post" messages you see mention direct scan out and not "composite". [ Where problems could occur ] Since the fix affects the runtime decision of whether to allow triple buffering or stay double buffering, the main risk is that triple buffering wouldn't be used in some situation where we would rather have it to maintain a smoother frame rate. [ Other Info ] First reported upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_2062222 We DO NOT recommend enabling the VRR feature anyway because it is still buggy (bug 2066080) [ Impact ] Fullscreen direct scanout is not used if you enable the hidden experimental VRR feature in Mutter 46. [ Test Plan ] 0. Find a monitor that is VRR capable. 1. Set CLUTTER_PAINT=damage-region in /etc/environment 2. gsettings set org.gnome.mutter experimental-features '["variable-refresh-rate"]' 3. Reboot. 4. Log into a Wayland session. 5. Don't panic. The screen is meant to turn red whenever something changes. 6. In Settings > Display verify that variable refresh rate is detected and enabled. 7. Open a web browser, start an animation like https://www.vsynctester.com/ 8. Press F11 to make it full screen. 9. Verify the screen has now stopped being red. 10. Press F11 again to exit full screen. 11. Verify the screen has gone red again. [ Where problems could occur ] Since the fix affects the runtime decision of whether to allow triple buffering or stay double buffering, the main risk is that triple buffering wouldn't be used in some situation where we would rather have it to maintain a smoother frame rate. [ Other Info ] First reported upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_2062222 We DO NOT recommend enabling the VRR feature anyway because it is still buggy (bug 2066080)
2024-06-27 06:10:46 Daniel van Vugt description [ Impact ] Fullscreen direct scanout is not used if you enable the hidden experimental VRR feature in Mutter 46. [ Test Plan ] 0. Find a monitor that is VRR capable. 1. Set CLUTTER_PAINT=damage-region in /etc/environment 2. gsettings set org.gnome.mutter experimental-features '["variable-refresh-rate"]' 3. Reboot. 4. Log into a Wayland session. 5. Don't panic. The screen is meant to turn red whenever something changes. 6. In Settings > Display verify that variable refresh rate is detected and enabled. 7. Open a web browser, start an animation like https://www.vsynctester.com/ 8. Press F11 to make it full screen. 9. Verify the screen has now stopped being red. 10. Press F11 again to exit full screen. 11. Verify the screen has gone red again. [ Where problems could occur ] Since the fix affects the runtime decision of whether to allow triple buffering or stay double buffering, the main risk is that triple buffering wouldn't be used in some situation where we would rather have it to maintain a smoother frame rate. [ Other Info ] First reported upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_2062222 We DO NOT recommend enabling the VRR feature anyway because it is still buggy (bug 2066080) [ Impact ] Fullscreen direct scanout is not used if you enable the hidden experimental VRR feature in Mutter 46. [ Test Plan ] 0. Find a monitor that is VRR capable. 1. Set CLUTTER_PAINT=damage-region in /etc/environment 2. gsettings set org.gnome.mutter experimental-features '["variable-refresh-rate"]' 3. Reboot. 4. Log into a Wayland session. 5. Don't panic. The screen is meant to turn red whenever something changes. 6. In Settings > Display verify that variable refresh rate is detected and enabled. 7. Open Google Chrome (Firefox won't work) and start an animation like https://www.vsynctester.com/ 8. Press F11 to make it full screen. 9. Verify the screen has now stopped being red. 10. Press F11 again to exit full screen. 11. Verify the screen has gone red again. [ Where problems could occur ] Since the fix affects the runtime decision of whether to allow triple buffering or stay double buffering, the main risk is that triple buffering wouldn't be used in some situation where we would rather have it to maintain a smoother frame rate. [ Other Info ] First reported upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_2062222 We DO NOT recommend enabling the VRR feature anyway because it is still buggy (bug 2066080)
2024-06-27 06:11:28 Daniel van Vugt description [ Impact ] Fullscreen direct scanout is not used if you enable the hidden experimental VRR feature in Mutter 46. [ Test Plan ] 0. Find a monitor that is VRR capable. 1. Set CLUTTER_PAINT=damage-region in /etc/environment 2. gsettings set org.gnome.mutter experimental-features '["variable-refresh-rate"]' 3. Reboot. 4. Log into a Wayland session. 5. Don't panic. The screen is meant to turn red whenever something changes. 6. In Settings > Display verify that variable refresh rate is detected and enabled. 7. Open Google Chrome (Firefox won't work) and start an animation like https://www.vsynctester.com/ 8. Press F11 to make it full screen. 9. Verify the screen has now stopped being red. 10. Press F11 again to exit full screen. 11. Verify the screen has gone red again. [ Where problems could occur ] Since the fix affects the runtime decision of whether to allow triple buffering or stay double buffering, the main risk is that triple buffering wouldn't be used in some situation where we would rather have it to maintain a smoother frame rate. [ Other Info ] First reported upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_2062222 We DO NOT recommend enabling the VRR feature anyway because it is still buggy (bug 2066080) [ Impact ] Fullscreen direct scanout is not used if you enable the hidden experimental VRR feature in Mutter 46. [ Test Plan ] 0. Find a monitor that is VRR capable. 1. Set CLUTTER_PAINT=damage-region in /etc/environment 2. gsettings set org.gnome.mutter experimental-features '["variable-refresh-rate"]' 3. Reboot. 4. Log into a Wayland session. 5. Don't panic. The screen is meant to turn red whenever something changes. 6. In Settings > Display verify that variable refresh rate is detected and enabled. 7. Open Google Chrome (Firefox won't work) and start an animation like https://www.vsynctester.com/ 8. Press F11 to make it full screen. 9. Verify the screen has now stopped being red. 10. Press F11 again to exit full screen. 11. Verify the screen has gone red again. If the screen went black at the end, don't panic. That's a separate bug 2066080. [ Where problems could occur ] Since the fix affects the runtime decision of whether to allow triple buffering or stay double buffering, the main risk is that triple buffering wouldn't be used in some situation where we would rather have it to maintain a smoother frame rate. [ Other Info ] First reported upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_2062222 We DO NOT recommend enabling the VRR feature anyway because it is still buggy (bug 2066080)
2024-06-28 09:03:58 Daniel van Vugt mutter (Ubuntu Noble): status Triaged In Progress
2024-07-05 11:44:55 Timo Aaltonen mutter (Ubuntu Noble): status In Progress Fix Committed
2024-07-05 11:44:59 Timo Aaltonen bug added subscriber Ubuntu Stable Release Updates Team
2024-07-05 11:45:01 Timo Aaltonen bug added subscriber SRU Verification
2024-07-05 11:45:16 Timo Aaltonen tags noble oracular triple-buffering vrr noble oracular triple-buffering verification-needed verification-needed-noble vrr
2024-07-09 06:03:13 Daniel van Vugt tags noble oracular triple-buffering verification-needed verification-needed-noble vrr noble oracular triple-buffering verification-done-noble verification-needed vrr
2024-07-22 08:27:41 Daniel van Vugt tags noble oracular triple-buffering verification-done-noble verification-needed vrr noble oracular triple-buffering verification-done verification-done-noble vrr
2024-07-31 03:15:47 Launchpad Janitor mutter (Ubuntu Noble): status Fix Committed Fix Released
2024-07-31 03:17:12 Chris Halse Rogers removed subscriber Ubuntu Stable Release Updates Team