Package: release.debian.org Severity: normal Tags: trixie X-Debbugs-Cc: [email protected] Control: affects -1 + src:gnome-shell User: [email protected] Usertags: pu
[ Reason ] Fix blank screen after GNOME login on some AMD GPUs [ Impact ] Some users reported a black screen after logging in to GNOME from GDM (#1125275, #1125941, #1126174) or a brief flash of a black screen followed by normal operation (#1125273) after the Debian 13.3 update, especially if using an AMD GPU and/or an external display. This seems to have been caused by an upstream change that was only intended for 50.x but was mistakenly cherry-picked to 49.x and 48.x, and is resolved in this version by reverting that change. (Not all configurations with an AMD GPU and an external display had this problem - I have a system with that setup and it was unaffected.) [ Tests ] A functionally equivalent version (differing only in the changelog and patch header) is available from <https://people.debian.org/~smcv/temp/2026/bug1125941/revert/>, and the reporters of #1125275, #1125941 and #1125273 confirmed that it solves the problem. I've also been using this version on one of my trixie systems for a while with no problems (although note that I wasn't affected by the regression). [ Risks ] This is a narrowly targeted change that has been through upstream review. [ Checklist ] [x] *all* changes are documented in the d/changelog [x] I reviewed all changes and I approve them [x] attach debdiff against the package in (old)stable [x] the issue is verified as fixed in unstable (since 49.3-1) [ Changes ] All changes are part of the regression fix.
diffstat for gnome-shell-48.7 gnome-shell-48.7 debian/changelog | 17 ++++ debian/patches/Revert-main-Register-session-with-GDM-on-startup.patch | 41 ++++++++++ debian/patches/series | 1 js/ui/main.js | 4 4 files changed, 61 insertions(+), 2 deletions(-) diff -Nru gnome-shell-48.7/debian/changelog gnome-shell-48.7/debian/changelog --- gnome-shell-48.7/debian/changelog 2025-12-09 11:38:09.000000000 +0000 +++ gnome-shell-48.7/debian/changelog 2026-02-07 11:16:25.000000000 +0000 @@ -1,3 +1,20 @@ +gnome-shell (48.7-0+deb13u2) trixie; urgency=medium + + * Team upload + * d/p/Revert-main-Register-session-with-GDM-on-startup.patch: + Revert an upstream change that was not intended to be backported + to 48.x. A corresponding revert has been queued for inclusion in + 48.8 upstream. + The change was developed for v50, under the assumption that gdm3 + changes from v50 would be present, but then mistakenly backported + to 48.x and included in the 48.7 release. + The resulting change to timings/sequencing triggered regressions in + modesetting during first login on some systems, which can result in + the Shell UI never appearing. + (Closes: #1125941, #1125273, #1125275, #1126174) + + -- Simon McVittie <[email protected]> Sat, 07 Feb 2026 11:16:25 +0000 + gnome-shell (48.7-0+deb13u1) trixie; urgency=medium * Team upload diff -Nru gnome-shell-48.7/debian/patches/Revert-main-Register-session-with-GDM-on-startup.patch gnome-shell-48.7/debian/patches/Revert-main-Register-session-with-GDM-on-startup.patch --- gnome-shell-48.7/debian/patches/Revert-main-Register-session-with-GDM-on-startup.patch 1970-01-01 01:00:00.000000000 +0100 +++ gnome-shell-48.7/debian/patches/Revert-main-Register-session-with-GDM-on-startup.patch 2026-02-07 11:16:25.000000000 +0000 @@ -0,0 +1,41 @@ +From: Joan Torres Lopez <[email protected]> +Date: Tue, 27 Jan 2026 13:35:34 +0100 +Subject: Revert "main: Register session with GDM on startup" + +This depends on GDM changes that are not in this release. + +This reverts commit 6703cacb559c74341ca88f2094d28973f323cde6. + +Origin: upstream, 48.8, commit:58e76dc260bfe8d4e6d315e19144bf01904b2d67 +Bug: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8983 +Bug: https://gitlab.gnome.org/GNOME/mutter/-/issues/4572 +Bug-Debian: https://bugs.debian.org/1125273 +Bug-Debian: https://bugs.debian.org/1125275 +Bug-Debian: https://bugs.debian.org/1125941 +Bug-Debian: https://bugs.debian.org/1126174 +--- + js/ui/main.js | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/js/ui/main.js b/js/ui/main.js +index 0b8cbb8..b07acd5 100644 +--- a/js/ui/main.js ++++ b/js/ui/main.js +@@ -329,8 +329,6 @@ async function _initializeUI() { + extensionManager = new ExtensionSystem.ExtensionManager(); + extensionManager.init(); + +- LoginManager.registerSessionWithGDM(); +- + if (sessionMode.isGreeter && screenShield) { + layoutManager.connect('startup-prepared', () => { + screenShield.showDialog(); +@@ -377,6 +375,8 @@ async function _initializeUI() { + sessionMode.currentMode !== 'initial-setup') + _handleLockScreenWarning(); + ++ LoginManager.registerSessionWithGDM(); ++ + if (perfModule) { + let perfOutput = GLib.getenv('SHELL_PERF_OUTPUT'); + Scripting.runPerfScript(perfModule, perfOutput); diff -Nru gnome-shell-48.7/debian/patches/series gnome-shell-48.7/debian/patches/series --- gnome-shell-48.7/debian/patches/series 2025-12-09 11:38:09.000000000 +0000 +++ gnome-shell-48.7/debian/patches/series 2026-02-07 11:16:25.000000000 +0000 @@ -3,3 +3,4 @@ debian/Revert-tests-Fail-on-warnings-too.patch shell-app-Warn-instead-of-crashing-if-disposed-before-sta.patch debian/data-Add-im-config.desktop-to-System-folder.patch +Revert-main-Register-session-with-GDM-on-startup.patch diff -Nru gnome-shell-48.7/js/ui/main.js gnome-shell-48.7/js/ui/main.js --- gnome-shell-48.7/js/ui/main.js 2025-11-24 14:16:08.000000000 +0000 +++ gnome-shell-48.7/js/ui/main.js 2026-02-07 13:17:03.000000000 +0000 @@ -329,8 +329,6 @@ extensionManager = new ExtensionSystem.ExtensionManager(); extensionManager.init(); - LoginManager.registerSessionWithGDM(); - if (sessionMode.isGreeter && screenShield) { layoutManager.connect('startup-prepared', () => { screenShield.showDialog(); @@ -377,6 +375,8 @@ sessionMode.currentMode !== 'initial-setup') _handleLockScreenWarning(); + LoginManager.registerSessionWithGDM(); + if (perfModule) { let perfOutput = GLib.getenv('SHELL_PERF_OUTPUT'); Scripting.runPerfScript(perfModule, perfOutput);
