[Bug 1948778] Re: Random flashes in gnome-shell
Thanks for the video! That "flash" seems to be the whole screen flickering to black. It can happen if the Wayland backend fails to assign a buffer to the screen for a frame. But it can also happen with monitor connection issues that may be hardware or software (kernel) problems. That's less likely on a laptop but not impossible (I've seen it there too). Let's assume it's a software bug in Mutter's Wayland backend, but I am out of ideas right now other than using 'Ubuntu on Xorg' as a workaround. ** Summary changed: - Random flashes in gnome-shell + [Notebook N7x0WU] Random black flickers in gnome-shell ** Summary changed: - [Notebook N7x0WU] Random black flickers in gnome-shell + [Notebook N7x0WU] Random black flickers in gnome-shell Wayland sessions ** Package changed: gnome-shell (Ubuntu) => mutter (Ubuntu) ** Changed in: mutter (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: [Notebook N7x0WU] Random black flickers in gnome-shell Wayland sessions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
I also tested quiet splash mitigations=off without luck -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
@Daniel #14 i have 1 wallpaper active, not automaticly changed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
The screen record of the glitch ** Attachment added: "glitch.mp4" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+attachment/5537666/+files/glitch.mp4 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
Do you have your background wallpaper set to change automatically? If so then you might see this flash periodically: https://gitlab.gnome.org/GNOME/mutter/-/issues/1882 ** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #1882 https://gitlab.gnome.org/GNOME/mutter/-/issues/1882 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
Again I can't see any KMS errors but it is suspicious that bug 1948589 occurred around the time you mention. I'm starting to think this isn't a KMS issue at all. Can you please take a video of the issue using a camera or phone? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
i tryed journalctl -f in realtime too with the kms logs running and when a flash occurs i cant seem to pinpoint errors on the seconds it happens -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
i had a screen flash on 11h39 with: quiet splash i915.enable_psr=0 MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 MUTTER_DEBUG=kms enabled ** Attachment added: "anotherflash.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+attachment/5536736/+files/anotherflash.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
Please enable both the suggestions in comment #5, and then follow comment #7 again. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
The only error I can see around 10:58 is bug 1948589 so maybe we should eliminate that first. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
i had a screen flash around 10h58 logs in attachment ** Attachment added: "anotherflash.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+attachment/5536712/+files/anotherflash.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
Wayland is only a communication protocol between the app and the server. The underlying screen updates are implemented by gnome-shell (via libmutter) using KMS. You can make it log LOTS of information by adding this to /etc/environment: MUTTER_DEBUG=kms If you do that and then record a separate log each time a flash happens: journalctl -b0 > anotherflash.txt then that might be useful. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
@Daniel i tested both fixes for several hours individualy but the flashes seem to keep happening is there some sort of wayland realtime debug command i could try to see if i can trace on the time its happening, as in journal logs nothing shows? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
Thanks. Please try these fixes separately so we can see which one if any avoids the problem: 1. Edit /etc/default/grub and change: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0" 2. Run: sudo update-grub 3. Reboot. 1. Edit /etc/environment and add a line: MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 2. Reboot. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
@ Daniel its a bit hard to say wich colour, as the flashes go so fast, like a fast screenshot when leaving a journalctl -f open i cant see any errors on the time of the flashes ** Attachment added: "journal.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+attachment/5536238/+files/journal.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
** Attachment added: "lspci.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+attachment/5536239/+files/lspci.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1948778] Re: Random flashes in gnome-shell
Thanks for the bug report. Are the flashes light or dark? Next time it happens, please immediately run: journalctl -b0 > journal.txt lspci -kv > lspci.txt and attach the resulting text files here. ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1948778 Title: Random flashes in gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1948778/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
