Public bug reported: I ignored my system for a while, long enough for the screensaver to blank the screen. When I tried to get it to awake ( I don't need to log back in), it seemed to be semihung, showing pretty black screen, but a mouse cursor visible. It did not respond to hitting keys. I tried switching back and forth between VT1 and VT2 to get it to come back to life. Eventually it came back on its own, but it took too long.
Here's a chunk of log from the time this happened. There are on the order of 2000 of the "maximum number of pending replies" messages that you see at the end of this log snippet. Jan 06 23:52:41 cerberus gsd-power[2252]: Error setting property 'PowerSaveMode' on interface org.gnome.Mutter.DisplayConfig: Timeout was reached (g-io-error-quark, 24) Jan 06 23:52:51 cerberus gvfsd[2276168]: Error 2: PTP Layer error 02ff: Error getting friendlyname. Jan 06 23:52:51 cerberus gvfsd[2276168]: Error 2: Error 02ff: PTP I/O Error Jan 06 23:52:51 cerberus gnome-shell[2987]: [System monitor] applet enabling done Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_declaration_parse_list_from_buf: assertion 'parser' failed Jan 06 23:52:51 cerberus gsd-power[3176]: Error setting property 'PowerSaveMode' on interface org.gnome.Mutter.DisplayConfig: Timeout was reached (g-io-error-quark, 24) Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_declaration_parse_list_from_buf: assertion 'parser' failed Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_declaration_parse_list_from_buf: assertion 'parser' failed Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_declaration_parse_list_from_buf: assertion 'parser' failed Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed Jan 06 23:52:51 cerberus gnome-shell[2987]: cr_declaration_parse_list_from_buf: assertion 'parser' failed Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.2990" (uid=1000 pid=2987 comm="/usr/bin/gnome-shell " label="unconfined") has been > Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.2990" (uid=1000 pid=2987 comm="/usr/bin/gnome-shell " label="unconfined") has been > Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.2990" (uid=1000 pid=2987 comm="/usr/bin/gnome-shell " label="unconfined") has been > Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.2990" (uid=1000 pid=2987 comm="/usr/bin/gnome-shell " label="unconfined") has been > Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.2990" (uid=1000 pid=2987 comm="/usr/bin/gnome-shell " label="unconfined") has been > ... Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.7" (uid=0 pid=1440 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")> Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.7" (uid=0 pid=1440 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")> Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.7" (uid=0 pid=1440 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")> Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.7" (uid=0 pid=1440 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")> Jan 06 23:52:52 cerberus gnome-shell[2987]: Error checking authorization for action id org.freedesktop.bolt.enroll: GDBus.Error:org.freedesktop.DBus.Error.LimitsExceeded: The maximum> Jan 06 23:52:52 cerberus gnome-shell[2987]: Error checking authorization for action id org.freedesktop.packagekit.trigger-offline-update: GDBus.Error:org.freedesktop.DBus.Error.Limit> Jan 06 23:52:52 cerberus dbus-daemon[1439]: [system] The maximum number of pending replies for ":1.7" (uid=0 pid=1440 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")> ... ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-shell 3.36.9-0ubuntu0.20.04.2 ProcVersionSignature: Ubuntu 5.4.0-91.102-generic 5.4.151 Uname: Linux 5.4.0-91-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.21 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Fri Jan 7 00:00:52 2022 DisplayManager: gdm3 InstallationDate: Installed on 2020-05-29 (587 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash RelatedPackageVersions: mutter-common 3.36.9-0ubuntu0.20.04.2 SourcePackage: gnome-shell UpgradeStatus: Upgraded to focal on 2020-11-04 (428 days ago) mtime.conffile..etc.apport.crashdb.conf: 2021-06-21T20:18:54.448530 ** Affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal -- 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/1956714 Title: gui took long time to return from blank screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1956714/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs