Registration Timeout is Excessively Long

Bug #1595383 reported by Jun Inoue on 2016-06-23
This bug affects 2 people
Affects Status Importance Assigned to Milestone
gnome-session (Ubuntu)

Bug Description

I'm suffering from a problem where gnome-session pauses for a very long time (90 seconds) during login. I type in my password to lightdm, the screen switches to show my wallpaper, but nothing else, and for the next minute and a half, I can't do anything besides move the cursor. Clicks don't do anything, key combinations to start a terminal don't work. In /var/log/syslog, I see a message

Jun 23 11:24:21 jun-MacBookAir gnome-session[1591]: gnome-session-binary[1591]: WARNING: Application 'at-spi-dbus-bus.desktop' failed to register before timeout

which seems to be caused by a problem with at-spi-dbus-bus.desktop, but this bug report is not about that. The bug I'd like to report here is that gnome-session's timeout is *way* too long. At first I had no idea that the login was going to succeed at all, because it was frozen for so long, and I kept rebooting by pushing the power button.

The 90-second wait seems to be hard-coded in the source, with a remark that waiting long enough is critical on slower media like CD-ROMs. While I can see how that's a concern, it makes no sense on a desktop installation booting from the SSD. The long wait interferes with debugging the problem (because every single thing I try takes at least 90 seconds), and will ensure that a problem in any of the components like at-spi-dbus-bus.desktop will show up as a serious inconvenience. I for one cannot stand a computer that takes minutes to boot, just because one component is acting erratically.

Please make this timeout shorter if at all possible, or at least configurable. Better yet, please have this automatically configured by benchmarking the system upon installation.

In the meantime, I'm attaching a patch for anyone who wants a quick work around to this nasty problem.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-session
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Jun 23 13:07:40 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-11-12 (223 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: gnome-session
UpgradeStatus: Upgraded to xenial on 2016-05-28 (25 days ago)

Jun Inoue (jun-lambda) wrote :
Jun Inoue (jun-lambda) wrote :

This patch changes the timeout to 5 seconds, which is probably too short for some slower media but reasonable for desktop installations. This is just a workaround as noted above; not meant for upstream.

The attachment "shorter-timeout.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

tags: added: patch
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in gnome-session (Ubuntu):
status: New → Confirmed
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