$ strace -o /tmp/strace_su.out -tt -f su
strace_su.out in attachment ; command hangs at
'2571952 10:49:47.809422 ppoll([{fd=5, events=POLLIN}], 1, {tv_sec=24,
tv_nsec=999930000}, NULL, 8'
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1824855
Title:
Unlocking the screen takes a long time after "Starting Fingerprint
Authentication Daemon..."
Status in fprintd package in Ubuntu:
Won't Fix
Status in gnome-shell package in Ubuntu:
Won't Fix
Status in fprintd package in Fedora:
Won't Fix
Bug description:
When waking my laptop screen up at the lock screen, it takes a very
long time to display the password prompt (definitely longer than 30s,
possibly longer than 1m - I didn't time it). I notice that while
waiting for the password prompt, the screen is showing a full list of
(obfuscated) desktop notifications. After logging in, I used the
gnome-shell interface to clear the notifications; then I locked my
screen again, at which point hitting the space bar caused the password
prompt to show up immediately.
So it looks like the time to display the password prompt might scale
linearly with the number of notifications; which is not useful,
because there is a finite number of (obfuscated!) notifications that
will be displayed on the lock screen, and AFAIK you can't interact
with them through the lock screen at all. So we shouldn't be wasting
time processing (and presumably rendering) notifications that will
never be visible.
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: gdm3 3.32.0-1ubuntu1
ProcVersionSignature: Ubuntu 5.0.0-8.9-generic 5.0.1
Uname: Linux 5.0.0-8-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 15 09:58:23 2019
InstallationDate: Installed on 2010-09-24 (3125 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64
(20100816.1)
SourcePackage: gdm3
UpgradeStatus: Upgraded to disco on 2019-04-11 (3 days ago)
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