[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
Something new (2 hours old) for you to try: https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-510 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: [ Description ] Video of signal loss with flipping enabled: https://youtu.be/V5DGcHN- BJs In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync momentarily (1~2 seconds) when switching to GPU accelerated application. Examples of this are: - When launching a game full-screen - Launching a GPU accelerated game in Window mode - Launching Steam - Launching kitty terminal https://sw.kovidgoyal.net/kitty/ This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Note: This example doesn't explicitly show G-SYNC being enabled in the onscreen indicator, rather what happens when G-SYNC is enabled in the settings. If I disable G-SYNC, but leave flipping enabled, the issue is not present. If I enabled G-SYNC, but disable flipping, the issue is not present. If both are enabled, then the issue occurs. [ Hardware ] - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable [ Settings ] In the NVIDIA OpenGL settings, the following settings are enabled: - Sync to VBlank Enabled - Allow Flipping Enabled - Image Setting: High Performance - Allow G-SYNC-/G-SYNC Compatible Enabled - Use Conformant Texture Clamping Enabled [ Observations ] When I disable Allow Flipping, the issue goes away. No signal is lost when changing to different GPU accelerated applications. Sometimes there is a brief flicker when opening a GPU accelerated program with flipping disabled, but it's not a signal loss, rather a very fast momentary flick of the display, but it's does not impact usability. As flipping is required for G-SYNC to function, therefore losing the benefit of G-SYNC if I were to disable flipping. [ Correlation to previous bug ] This issue was present in Ubuntu 21.04, eventually driver 495.44 resolved this problem on the 5.14.1 kernel. I will add that when I first had this machine and screen in 20.10 and 21.04, it was not experiencing the signal loss issue. The bug described in the change log in this launchpad bug seems to reference the type of regression I am experiencing https://launchpad.net/bugs/1950665. [ Troubleshooting ] Full driver purges between trying different drivers: - Tried downgrading to 470.82 - Went back to the standard kernel for 21.10 (5.13.0-21-generic) at the time - Tried deleting ~/.nv, ~/.cache/nvidia - Reverted to previous X11 conf - Tried 5.14.1 which was working in Ubuntu 21.04 - Tried kernels 5.14.17, 5.15.6 - Persists in 470.94 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 495.46 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 510.39.01 (NVIDIA bundle) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
Thanks for the response, The G-SYNC mode does work for applications that utilise it, such as games. It just drops sync like that. I've commented on this thread which has since gone cold: https://forums.developer.nvidia.com/t/nvidia-470-74-breaks-gsync- compatible-support-monitor-modulates-between-0-or-144hz-and-flickers- black/189716/39 I'm not really sure what to say, other than it was drivers changing that changed the behaviour. Guess I can try to start a new thread to see if it gets some attention. I'd add, I've been using G-SYNC on Linux for quite some time, so it's strange it's affecting me. I do have another G-SYNC display at work, however, we're currently on WFH orders with COVID-19 etc. I'll try this out when I am allowed back in the office. I'm not sure if there is anything I can do to debug the mode changes to see if I can get more info, I'm guessing that there are limited options with proprietary drivers. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: [ Description ] Video of signal loss with flipping enabled: https://youtu.be/V5DGcHN- BJs In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync momentarily (1~2 seconds) when switching to GPU accelerated application. Examples of this are: - When launching a game full-screen - Launching a GPU accelerated game in Window mode - Launching Steam - Launching kitty terminal https://sw.kovidgoyal.net/kitty/ This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Note: This example doesn't explicitly show G-SYNC being enabled in the onscreen indicator, rather what happens when G-SYNC is enabled in the settings. If I disable G-SYNC, but leave flipping enabled, the issue is not present. If I enabled G-SYNC, but disable flipping, the issue is not present. If both are enabled, then the issue occurs. [ Hardware ] - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable [ Settings ] In the NVIDIA OpenGL settings, the following settings are enabled: - Sync to VBlank Enabled - Allow Flipping Enabled - Image Setting: High Performance - Allow G-SYNC-/G-SYNC Compatible Enabled - Use Conformant Texture Clamping Enabled [ Observations ] When I disable Allow Flipping, the issue goes away. No signal is lost when changing to different GPU accelerated applications. Sometimes there is a brief flicker when opening a GPU accelerated program with flipping disabled, but it's not a signal loss, rather a very fast momentary flick of the display, but it's does not impact usability. As flipping is required for G-SYNC to function, therefore losing the benefit of G-SYNC if I were to disable flipping. [ Correlation to previous bug ] This issue was present in Ubuntu 21.04, eventually driver 495.44 resolved this problem on the 5.14.1 kernel. I will add that when I first had this machine and screen in 20.10 and 21.04, it was not experiencing the signal loss issue. The bug described in the change log in this launchpad bug seems to reference the type of regression I am experiencing https://launchpad.net/bugs/1950665. [ Troubleshooting ] Full driver purges between trying different drivers: - Tried downgrading to 470.82 - Went back to the standard kernel for 21.10 (5.13.0-21-generic) at the time - Tried deleting ~/.nv, ~/.cache/nvidia - Reverted to previous X11 conf - Tried 5.14.1 which was working in Ubuntu 21.04 - Tried kernels 5.14.17, 5.15.6 - Persists in 470.94 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 495.46 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 510.39.01 (NVIDIA bundle) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
Thanks for the details and video. I've only ever seen G-SYNC on a Windows machine, in which case the display would blank whenever G-SYNC was enabled, just like you describe. So if the same happens in both Windows and Linux then maybe it's not a bug?... If you didn't see the blanking in the past then that might just indicate that no switching was occurring. Perhaps the monitor was either permanently in, or never in, G-SYNC mode. If the driver needs to blank the screen for a second or two to switch modes then I'm not sure that's a bug. You should probably ask in https://forums.developer.nvidia.com/c/gpu-graphics/linux/148 or a similar forum. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: [ Description ] Video of signal loss with flipping enabled: https://youtu.be/V5DGcHN- BJs In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync momentarily (1~2 seconds) when switching to GPU accelerated application. Examples of this are: - When launching a game full-screen - Launching a GPU accelerated game in Window mode - Launching Steam - Launching kitty terminal https://sw.kovidgoyal.net/kitty/ This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Note: This example doesn't explicitly show G-SYNC being enabled in the onscreen indicator, rather what happens when G-SYNC is enabled in the settings. If I disable G-SYNC, but leave flipping enabled, the issue is not present. If I enabled G-SYNC, but disable flipping, the issue is not present. If both are enabled, then the issue occurs. [ Hardware ] - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable [ Settings ] In the NVIDIA OpenGL settings, the following settings are enabled: - Sync to VBlank Enabled - Allow Flipping Enabled - Image Setting: High Performance - Allow G-SYNC-/G-SYNC Compatible Enabled - Use Conformant Texture Clamping Enabled [ Observations ] When I disable Allow Flipping, the issue goes away. No signal is lost when changing to different GPU accelerated applications. Sometimes there is a brief flicker when opening a GPU accelerated program with flipping disabled, but it's not a signal loss, rather a very fast momentary flick of the display, but it's does not impact usability. As flipping is required for G-SYNC to function, therefore losing the benefit of G-SYNC if I were to disable flipping. [ Correlation to previous bug ] This issue was present in Ubuntu 21.04, eventually driver 495.44 resolved this problem on the 5.14.1 kernel. I will add that when I first had this machine and screen in 20.10 and 21.04, it was not experiencing the signal loss issue. The bug described in the change log in this launchpad bug seems to reference the type of regression I am experiencing https://launchpad.net/bugs/1950665. [ Troubleshooting ] Full driver purges between trying different drivers: - Tried downgrading to 470.82 - Went back to the standard kernel for 21.10 (5.13.0-21-generic) at the time - Tried deleting ~/.nv, ~/.cache/nvidia - Reverted to previous X11 conf - Tried 5.14.1 which was working in Ubuntu 21.04 - Tried kernels 5.14.17, 5.15.6 - Persists in 470.94 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 495.46 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 510.39.01 (NVIDIA bundle) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
** Tags added: impish -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: [ Description ] Video of signal loss with flipping enabled: https://youtu.be/V5DGcHN- BJs In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync momentarily (1~2 seconds) when switching to GPU accelerated application. Examples of this are: - When launching a game full-screen - Launching a GPU accelerated game in Window mode - Launching Steam - Launching kitty terminal https://sw.kovidgoyal.net/kitty/ This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Note: This example doesn't explicitly show G-SYNC being enabled in the onscreen indicator, rather what happens when G-SYNC is enabled in the settings. If I disable G-SYNC, but leave flipping enabled, the issue is not present. If I enabled G-SYNC, but disable flipping, the issue is not present. If both are enabled, then the issue occurs. [ Hardware ] - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable [ Settings ] In the NVIDIA OpenGL settings, the following settings are enabled: - Sync to VBlank Enabled - Allow Flipping Enabled - Image Setting: High Performance - Allow G-SYNC-/G-SYNC Compatible Enabled - Use Conformant Texture Clamping Enabled [ Observations ] When I disable Allow Flipping, the issue goes away. No signal is lost when changing to different GPU accelerated applications. Sometimes there is a brief flicker when opening a GPU accelerated program with flipping disabled, but it's not a signal loss, rather a very fast momentary flick of the display, but it's does not impact usability. As flipping is required for G-SYNC to function, therefore losing the benefit of G-SYNC if I were to disable flipping. [ Correlation to previous bug ] This issue was present in Ubuntu 21.04, eventually driver 495.44 resolved this problem on the 5.14.1 kernel. I will add that when I first had this machine and screen in 20.10 and 21.04, it was not experiencing the signal loss issue. The bug described in the change log in this launchpad bug seems to reference the type of regression I am experiencing https://launchpad.net/bugs/1950665. [ Troubleshooting ] Full driver purges between trying different drivers: - Tried downgrading to 470.82 - Went back to the standard kernel for 21.10 (5.13.0-21-generic) at the time - Tried deleting ~/.nv, ~/.cache/nvidia - Reverted to previous X11 conf - Tried 5.14.1 which was working in Ubuntu 21.04 - Tried kernels 5.14.17, 5.15.6 - Persists in 470.94 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 495.46 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 510.39.01 (NVIDIA bundle) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
** Description changed: [ Description ] Video of signal loss with flipping enabled: https://youtu.be/V5DGcHN-BJs - In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL - Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync - momentarily (1~2 seconds) when switching to GPU accelerated application. - Examples of this are; when launching a game full-screen game, launching - a GPU accelerated Windows game, launching Steam, launching kitty - terminal https://sw.kovidgoyal.net/kitty/. + In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync momentarily (1~2 seconds) when switching to GPU accelerated application. Examples of this are: + - When launching a game full-screen + - Launching a GPU accelerated game in Window mode + - Launching Steam + - Launching kitty terminal https://sw.kovidgoyal.net/kitty/ This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. - Note: that this example doesn't explicitly show G-SYNC being enabled, - rather when G-SYNC is enabled in the settings, it will produce this - behaviour. If I disable G-SYNC, but leave flipping enabled, the issue is + Note: This example doesn't explicitly show G-SYNC being enabled in the + onscreen indicator, rather what happens when G-SYNC is enabled in the + settings. If I disable G-SYNC, but leave flipping enabled, the issue is not present. If I enabled G-SYNC, but disable flipping, the issue is not - present. + present. If both are enabled, then the issue occurs. [ Hardware ] - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable [ Settings ] - In OpenGL the following settings are enabled: + In the NVIDIA OpenGL settings, the following settings are enabled: - Sync to VBlank Enabled - Allow Flipping Enabled - Image Setting: High Performance - Allow G-SYNC-/G-SYNC Compatible Enabled - Use Conformant Texture Clamping Enabled [ Observations ] When I disable Allow Flipping, the issue goes away. No signal is lost when changing to different GPU accelerated applications. Sometimes there is a brief flicker when opening a GPU accelerated program with flipping - disabled, but it's not a single loss, rather a very fast few frame - flicker. Flipping is required for G-SYNC to function, therefore losing - the benefit of G-SYNC if I were to disable flipping. + disabled, but it's not a signal loss, rather a very fast momentary flick + of the display, but it's does not impact usability. As flipping is + required for G-SYNC to function, therefore losing the benefit of G-SYNC + if I were to disable flipping. [ Correlation to previous bug ] - This issue was present in 21.04, eventually driver 495.44 resolve this - problem on the 5.14.1 kernel. I will add that when I first had this - machine and screen in 21.04, it was not experiencing the flipping issue. + This issue was present in Ubuntu 21.04, eventually driver 495.44 + resolved this problem on the 5.14.1 kernel. I will add that when I first + had this machine and screen in 20.10 and 21.04, it was not experiencing + the signal loss issue. - The bug described in the launchpad bug seems to reference the type of - regression I experienced https://launchpad.net/bugs/1950665. + The bug described in the change log in this launchpad bug seems to + reference the type of regression I am experiencing + https://launchpad.net/bugs/1950665. [ Troubleshooting ] Full driver purges between trying different drivers: - Tried downgrading to 470.82 - Went back to the standard kernel for 21.10 (5.13.0-21-generic) at the time - Tried deleting ~/.nv, ~/.cache/nvidia - Reverted to previous X11 conf - Tried 5.14.1 which was working in Ubuntu 21.04 - Tried kernels 5.14.17, 5.15.6 - Persists in 470.94 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 495.46 (NVIDIA bundle and Graphics Drivers PPA) - Persists in 510.39.01 (NVIDIA bundle) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: [ Description ] Video of signal loss with flipping enabled: https://youtu.be/V5DGcHN- BJs In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync momentarily (1~2 seconds) when switching to GPU accelerated application. Examples of this are: - When launching a game full-screen - Launching a GPU accelerated game in Window mode - Launching Steam - Launching kitty terminal https://sw.kovidgoyal.net/kitty
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
Hi Daniel, I've updated the description and added a video of the behaviour for your reference. Hopefully it's a bit clearer for you now. Thanks ** Description changed: - Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression - bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard - kernel and 5.14.1 and 5.14.17, but they are all experiencing the same - bug again. + [ Description ] - Hardware is: - - NVIDIA GeForce RTX 2080 Super - - Dell 27" S2721DGF G-Sync Compatible monitor - - High quality DisplayPort cable (This was replaced previously under suspicion) + Video of signal loss with flipping enabled: https://youtu.be/V5DGcHN-BJs + + In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL + Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync + momentarily (1~2 seconds) when switching to GPU accelerated application. + Examples of this are; when launching a game full-screen game, launching + a GPU accelerated Windows game, launching Steam, launching kitty + terminal https://sw.kovidgoyal.net/kitty/. This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. - Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu - 21.04 and kernel 5.14.1, and this problem was not present. + Note: that this example doesn't explicitly show G-SYNC being the issue, + rather when G-SYNC is enabled in the settings, it will produce this + behaviour. - I then upgraded to Ubuntu 21.10, and the problem didn't seem to be - present, but as of today I've noticed again. + [ Hardware ] - I'm not sure what the cause is, but I have tried full driver purges, - returned to 470.82, went back to the standard kernel for 21.10 - (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to - occur when any GPU accelerated application starts, in some cases when - switching between applications (i.e. alt tabbing out of a game). A - second or so of no signal occurs as it re-syncs. + - NVIDIA GeForce RTX 2080 Super + - Dell 27" S2721DGF G-Sync Compatible monitor + - High quality DisplayPort cable - I am unsure if X11 has been updated in this time, I know there was work - happening on GBM support, wondering if X11 has switched to using this - instead of the EGL Streams direct approach that was used previously. - Either-way, I'm still running X11 in all of these tests. + [ Settings ] - Let me know if there are any tests you'd like me to try. + In OpenGL the following settings are enabled: + - Sync to VBlank Enabled + - Allow Flipping Enabled + - Image Setting: High Performance + - Allow G-SYNC-/G-SYNC Compatible Enabled + - Use Conformant Texture Clamping Enabled + + [ Observations ] + + When I disable Allow Flipping, the issue goes away. No signal is lost + when changing to different GPU accelerated applications. However, + Flipping is required for G-SYNC to function, therefore losing the + benefit of G-SYNC. + + [ Correlation to previous bug ] + + This issue was present in 21.04, eventually driver 495.44 resolve this + problem on the 5.14.1 kernel. I will add that when I first had this + machine and screen in 21.04, it was not experiencing the flipping issue. + + The bug described in the launchpad bug seems to reference the type of + regression I experienced https://launchpad.net/bugs/1950665. + + [ Troubleshooting ] + + Full driver purges between trying different drivers: + + - Tried downgrading to 470.82 + - Went back to the standard kernel for 21.10 (5.13.0-21-generic) at the time + - Tried deleting ~/.nv, ~/.cache/nvidia + - Reverted to previous X11 settings + - Tried 5.14.1 which was working in Ubuntu 21.04 + - Tried kernels 5.14.17, 5.15.6 + - Persists in 470.94 (NVIDIA bundle and Graphics Drivers PPA) + - Persists in 495.46 (NVIDIA bundle and Graphics Drivers PPA) + - Persists in 510.39.01 (NVIDIA bundle) ** Description changed: [ Description ] Video of signal loss with flipping enabled: https://youtu.be/V5DGcHN-BJs In NVIDIA the 495 driver for Ubuntu 21.10, with G-SYNC enabled in OpenGL Settings of NVIDIA Settings, the G-SYNC compatible monitor loses sync momentarily (1~2 seconds) when switching to GPU accelerated application. Examples of this are; when launching a game full-screen game, launching a GPU accelerated Windows game, launching Steam, launching kitty terminal https://sw.kovidgoyal.net/kitty/. This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. - Note: that this example doesn't explicitly show G-SYNC being the issue, + Note: that this example doesn't explicitly show G-SYNC being enabled, rather when G-SYNC is enabled in the settings, it will produce this - behaviour. + behaviour. If I disable G-SYNC, but leave flipping enabled, the issue is + not present. If I enabled G-SYNC, but disable flipping, the issue is not + present. [ Hardware ] - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
berglh, can you please describe the problem/symptoms in the Bug Description? I can't seem to find any description of the problem itself. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard kernel and 5.14.1 and 5.14.17, but they are all experiencing the same bug again. Hardware is: - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable (This was replaced previously under suspicion) This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu 21.04 and kernel 5.14.1, and this problem was not present. I then upgraded to Ubuntu 21.10, and the problem didn't seem to be present, but as of today I've noticed again. I'm not sure what the cause is, but I have tried full driver purges, returned to 470.82, went back to the standard kernel for 21.10 (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to occur when any GPU accelerated application starts, in some cases when switching between applications (i.e. alt tabbing out of a game). A second or so of no signal occurs as it re-syncs. I am unsure if X11 has been updated in this time, I know there was work happening on GBM support, wondering if X11 has switched to using this instead of the EGL Streams direct approach that was used previously. Either-way, I'm still running X11 in all of these tests. Let me know if there are any tests you'd like me to try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
Bug persists in beta driver 510.39.01 from NVIDIA website. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard kernel and 5.14.1 and 5.14.17, but they are all experiencing the same bug again. Hardware is: - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable (This was replaced previously under suspicion) This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu 21.04 and kernel 5.14.1, and this problem was not present. I then upgraded to Ubuntu 21.10, and the problem didn't seem to be present, but as of today I've noticed again. I'm not sure what the cause is, but I have tried full driver purges, returned to 470.82, went back to the standard kernel for 21.10 (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to occur when any GPU accelerated application starts, in some cases when switching between applications (i.e. alt tabbing out of a game). A second or so of no signal occurs as it re-syncs. I am unsure if X11 has been updated in this time, I know there was work happening on GBM support, wondering if X11 has switched to using this instead of the EGL Streams direct approach that was used previously. Either-way, I'm still running X11 in all of these tests. Let me know if there are any tests you'd like me to try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
This problem persists on driver 495.46 from NVIDIA website which stated the same regression fix in the patch notes, there was no change in the flickering on G-SYNC mode change. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard kernel and 5.14.1 and 5.14.17, but they are all experiencing the same bug again. Hardware is: - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable (This was replaced previously under suspicion) This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu 21.04 and kernel 5.14.1, and this problem was not present. I then upgraded to Ubuntu 21.10, and the problem didn't seem to be present, but as of today I've noticed again. I'm not sure what the cause is, but I have tried full driver purges, returned to 470.82, went back to the standard kernel for 21.10 (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to occur when any GPU accelerated application starts, in some cases when switching between applications (i.e. alt tabbing out of a game). A second or so of no signal occurs as it re-syncs. I am unsure if X11 has been updated in this time, I know there was work happening on GBM support, wondering if X11 has switched to using this instead of the EGL Streams direct approach that was used previously. Either-way, I'm still running X11 in all of these tests. Let me know if there are any tests you'd like me to try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: nvidia-graphics-drivers-495 (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard kernel and 5.14.1 and 5.14.17, but they are all experiencing the same bug again. Hardware is: - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable (This was replaced previously under suspicion) This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu 21.04 and kernel 5.14.1, and this problem was not present. I then upgraded to Ubuntu 21.10, and the problem didn't seem to be present, but as of today I've noticed again. I'm not sure what the cause is, but I have tried full driver purges, returned to 470.82, went back to the standard kernel for 21.10 (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to occur when any GPU accelerated application starts, in some cases when switching between applications (i.e. alt tabbing out of a game). A second or so of no signal occurs as it re-syncs. I am unsure if X11 has been updated in this time, I know there was work happening on GBM support, wondering if X11 has switched to using this instead of the EGL Streams direct approach that was used previously. Either-way, I'm still running X11 in all of these tests. Let me know if there are any tests you'd like me to try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
I’m still affected by this issue despite the alleged driver fix. I’ve been running Ubuntu 20.04 for quite some time with a conventional GSYNC monitor and have upgraded to an Asus XG27UQ GSYNC Compatible monitor and this display loses sync if the framerate drops below the VRR threshold and regains sync after blanking out within a few seconds then loses sync again in-game only if the framerate drops below the VRR threshold. I have tested with the DP cable supplied with the monitor and after experiencing the issue I then purchased a shorter 1m Comsol DP cable (DPDP8K01). Both cables are compliant with DP 1.4 spec and support up to 8K, no adapter is being used, it is plugged directly to the GPU’s DP port and I have tested all DP ports, the problem still persists. The behavior has been observed so far first within the game “Doom Eternal” using the Proton Windows-to-Linux compatibility layer within Linux, I then tested it with the game “Black Mesa” which is a native Linux application using OpenGL and observed the same fault, in both cases upon every replication attempt. Disabling GSYNC/Adaptive Sync within the driver or alternatively via the monitor OSD totally prevents the behavior from occurring. I upgraded to the 495.44 driver from 470.82 with no change in behaviour, I uninstalled this and installed the 470.86 driver in hopes that it would resolve the issue, it has not. This issue is not reproducible under Windows 10, I have tested it thoroughly and the display never blanks out under Windows and I’ve confirmed VRR is engaged via the GSYNC indicator within the driver, this only happens for me on Linux with all the drivers I’ve tried (470.82, 495.44, 470.86). I still have my conventional GSYNC monitor in my possession, the issue cannot be reproduced under Linux using the Dell S2616DG with GSYNC enabled after swapping back to it when troubleshooting. After swapping back to the XG27UQ I have since also tried driver 460.91, no change in behaviour, problem still persists. I have already raised this with Nvidia’s Customer Care team and their representative has declined to offer further assistance or an escalation pathway to resolution on the basis that Nvidia’s support channel doesn’t support Linux. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard kernel and 5.14.1 and 5.14.17, but they are all experiencing the same bug again. Hardware is: - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable (This was replaced previously under suspicion) This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu 21.04 and kernel 5.14.1, and this problem was not present. I then upgraded to Ubuntu 21.10, and the problem didn't seem to be present, but as of today I've noticed again. I'm not sure what the cause is, but I have tried full driver purges, returned to 470.82, went back to the standard kernel for 21.10 (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to occur when any GPU accelerated application starts, in some cases when switching between applications (i.e. alt tabbing out of a game). A second or so of no signal occurs as it re-syncs. I am unsure if X11 has been updated in this time, I know there was work happening on GBM support, wondering if X11 has switched to using this instead of the EGL Streams direct approach that was used previously. Either-way, I'm still running X11 in all of these tests. Let me know if there are any tests you'd like me to try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: nvidia-graphics-drivers-470 (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard kernel and 5.14.1 and 5.14.17, but they are all experiencing the same bug again. Hardware is: - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable (This was replaced previously under suspicion) This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu 21.04 and kernel 5.14.1, and this problem was not present. I then upgraded to Ubuntu 21.10, and the problem didn't seem to be present, but as of today I've noticed again. I'm not sure what the cause is, but I have tried full driver purges, returned to 470.82, went back to the standard kernel for 21.10 (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to occur when any GPU accelerated application starts, in some cases when switching between applications (i.e. alt tabbing out of a game). A second or so of no signal occurs as it re-syncs. I am unsure if X11 has been updated in this time, I know there was work happening on GBM support, wondering if X11 has switched to using this instead of the EGL Streams direct approach that was used previously. Either-way, I'm still running X11 in all of these tests. Let me know if there are any tests you'd like me to try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-495 package in Ubuntu: Confirmed Bug description: Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard kernel and 5.14.1 and 5.14.17, but they are all experiencing the same bug again. Hardware is: - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable (This was replaced previously under suspicion) This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu 21.04 and kernel 5.14.1, and this problem was not present. I then upgraded to Ubuntu 21.10, and the problem didn't seem to be present, but as of today I've noticed again. I'm not sure what the cause is, but I have tried full driver purges, returned to 470.82, went back to the standard kernel for 21.10 (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to occur when any GPU accelerated application starts, in some cases when switching between applications (i.e. alt tabbing out of a game). A second or so of no signal occurs as it re-syncs. I am unsure if X11 has been updated in this time, I know there was work happening on GBM support, wondering if X11 has switched to using this instead of the EGL Streams direct approach that was used previously. Either-way, I'm still running X11 in all of these tests. Let me know if there are any tests you'd like me to try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1950720] Re: GSYNC bug regression in 495.44 Ubuntu 21.10
** Also affects: nvidia-graphics-drivers-470 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1950720 Title: GSYNC bug regression in 495.44 Ubuntu 21.10 Status in nvidia-graphics-drivers-470 package in Ubuntu: New Status in nvidia-graphics-drivers-495 package in Ubuntu: New Bug description: Similar to bug https://launchpad.net/bugs/1950665, the GSYNC regression bug has returned in 495.44 on Ubuntu 21.10. I have tried the standard kernel and 5.14.1 and 5.14.17, but they are all experiencing the same bug again. Hardware is: - NVIDIA GeForce RTX 2080 Super - Dell 27" S2721DGF G-Sync Compatible monitor - High quality DisplayPort cable (This was replaced previously under suspicion) This issue happens at all refresh rates: 60 Hz, 120 Hz, 144 Hz and 165 Hz. Prior to upgrading to Ubuntu 21.10, I had upgraded to 495.44 on Ubuntu 21.04 and kernel 5.14.1, and this problem was not present. I then upgraded to Ubuntu 21.10, and the problem didn't seem to be present, but as of today I've noticed again. I'm not sure what the cause is, but I have tried full driver purges, returned to 470.82, went back to the standard kernel for 21.10 (5.13.0-21-generic), 5.14.1 and 5.14.17, and the problem continues to occur when any GPU accelerated application starts, in some cases when switching between applications (i.e. alt tabbing out of a game). A second or so of no signal occurs as it re-syncs. I am unsure if X11 has been updated in this time, I know there was work happening on GBM support, wondering if X11 has switched to using this instead of the EGL Streams direct approach that was used previously. Either-way, I'm still running X11 in all of these tests. Let me know if there are any tests you'd like me to try. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1950720/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
