Yesterday I got an upgrade of Silverblue. When booting to upgraded version, each time an application is maximized or Gnome Shell overview is shown, screen flickers, goes black and then after few seconds is back again. Another symptom are visual artifacts on desktop's context menu. I am not entirely sure what's the reason exactly - Kernel or Mesa as there's nothing suspicious in journalctl when this occurs. Reproducible: Always Steps to Reproduce: 1.Upgrade to Silverblue 38.20230601.0 2.Reboot the system 3.Run and maximize e.g. Gnome Terminal Actual Results: The screen flickers and goes black when Gnome Terminal is maximized and then gets stable until Gnome Shell preview is shown and another app run and maximized. Expected Results: The screen should neither flicker nor go black. Please note rpm-ostree reports a downgrade, because the command was run on a working rolled back deployment. $ rpm-ostree db diff ostree diff commit from: rollback deployment (80ef60d9f69302fbc61545537f1fff0a07965e17739b98fb9aad0c3d68fb8e5a) ostree diff commit to: booted deployment (f0b7c303b10614c3dea1bf63dd31e25aa77f4db2dd86f38eafc1a0cd229d5805) Downgraded: btrfs-progs 6.3.1-1.fc38 -> 6.2.2-1.fc38 container-selinux 2:2.216.0-1.fc38 -> 2:2.215.0-2.fc38 fedora-release-common 38-36 -> 38-35 fedora-release-identity-silverblue 38-36 -> 38-35 fedora-release-ostree-desktop 38-36 -> 38-35 fedora-release-silverblue 38-36 -> 38-35 kernel 6.3.4-201.fc38 -> 6.2.15-300.fc38 kernel-core 6.3.4-201.fc38 -> 6.2.15-300.fc38 kernel-headers 6.3.3-200.fc38 -> 6.2.6-300.fc38 kernel-modules 6.3.4-201.fc38 -> 6.2.15-300.fc38 kernel-modules-core 6.3.4-201.fc38 -> 6.2.15-300.fc38 kernel-modules-extra 6.3.4-201.fc38 -> 6.2.15-300.fc38 mesa-dri-drivers 23.1.1-1.fc38 -> 23.0.3-5.fc38 mesa-filesystem 23.1.1-1.fc38 -> 23.0.3-5.fc38 mesa-libEGL 23.1.1-1.fc38 -> 23.0.3-5.fc38 mesa-libGL 23.1.1-1.fc38 -> 23.0.3-5.fc38 mesa-libgbm 23.1.1-1.fc38 -> 23.0.3-5.fc38 mesa-libglapi 23.1.1-1.fc38 -> 23.0.3-5.fc38 mesa-libxatracker 23.1.1-1.fc38 -> 23.0.3-5.fc38 mesa-va-drivers 23.1.1-1.fc38 -> 23.0.3-5.fc38 mesa-vulkan-drivers 23.1.1-1.fc38 -> 23.0.3-5.fc38 qgnomeplatform-qt5 0.9.1-3.fc38 -> 0.9.1-2.fc38 selinux-policy 38.15-1.fc38 -> 38.12-1.fc38 selinux-policy-targeted 38.15-1.fc38 -> 38.12-1.fc38 I have Radeon 5700 XT video card, if that matters.
It looks like changing monitor refresh rate in Gnome Settings from 59,95 Hz to 59,88 Hz works as a workaround.
The problem (In reply to Piotr Orzechowski from comment #1) > It looks like changing monitor refresh rate in Gnome Settings from 59,95 Hz > to 59,88 Hz works as a workaround. It is not a workaround after all. Visual glitches and screen going blank and flickering back and forth still happen, just less often than without refresh change. But still way too often - multiple times a day. I can't pinpoint exact reason. It happens mostly when activating Gnome overview and using Firefox (eg. scrolling pages or just opening them). No logs in journalctl. The problem happens on 6.3.12-200.fc38.x86_64 and previous kernels back to and including 6.3.4-201.fc38.x86_64.