The importance on this ticket is incorrect: it should not be marked
"low". According to https://dev.launchpad.net/BugTriage#importance)
"Low" is defined as "legitimate but that is not scheduled for Canonical
staff to fix in the next 6 months."
This is a MAJOR issue. As W-barath-hotmail noted it can cause some
extremely serious side effects for anyone who relies on power
management. As such, this ticket should have an importance of "High"
("we believe we will work on in the next six months"). To ignore it for
six or more months would be to deliberately cause serious user damage.
Also, this bug is difficult for users to track down. It's not like
problematic tabs flash red or something, so each user has to figure out
on their own that not only is Chrome the source of the problem, but a
specific tab within Chrome. As a result, the number of users affected by
this bug is undoubtedly much higher than what's reflected on this page,
as many affected users just aren't able to track the problem to this
page.
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https://bugs.launchpad.net/bugs/1600622
Title:
Screen doesn't lock or go to sleep when certain Chrome tabs are open
Status in gnome-session package in Ubuntu:
Confirmed
Bug description:
$ lsb_release -rd
Description: Ubuntu 16.04 LTS
Release: 16.04
$ apt-cache policy gnome-session-bin
gnome-session-bin:
Installed: 3.18.1.2-1ubuntu1.16.04.1
Candidate: 3.18.1.2-1ubuntu1.16.04.1
Version table:
*** 3.18.1.2-1ubuntu1.16.04.1 500
500 http://es.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
100 /var/lib/dpkg/status
3.18.1.2-1ubuntu1 500
500 http://es.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
I'm using gnome-session-flashback
What happens:
The screen doesn't lock when having certain pages in Chrome tabs
Expected:
The screen should lock after the configured timeout in settings.
I've been having this issue sice before 14.04, which I recently
upgraded (fresh install) to 16.04.
After fresh install, the screen would turn down and lock the computer
after 10 minutes (or whatever time I setup). At one point it stopped
working. The screen never shuts down unless I manually lock the
session with CTRL-ALT-L.
I've followed the steps in
https://wiki.ubuntu.com/DebuggingScreenLocking#Debugging_procedure
The culprit seems to be that Chrome issues some suspend inhibitions
through dbus when doing certain operations. Many people find this
problem when using Yahoo Mail. I can reproduce it with Odoo. I'm
pretty sure that Chrome is doing something else of what i've found
out.
1) Gnome screen saver works correctly. I can trigger it manually with:
$ gnome-screensaver-command -a
2) Gnome screen saver never receives the "session idle" status
callback.
3) When Chrome is not running, I can manually inhibit the idle status:
$ gnome-session-inhibit --app-id test --reason "manual idle inhibit"
--inhibit-only --inhibit idle:suspend
Inhibiting until Ctrl+C is pressed...
4) I can query the inhibitors:
$ dbus-send --print-reply --dest=org.gnome.SessionManager
/org/gnome/SessionManager org.gnome.SessionManager.GetInhibitorsmethod return
time=1468170482.066533 sender=:1.19 -> destination=:1.1315311 serial=1329103
reply_serial=2
array [
object path "/org/gnome/SessionManager/Inhibitor1686"
]
$ gdbus call --session --dest org.gnome.SessionManager --object-path
/org/gnome/SessionManager/Inhibitor1686 --method
org.gnome.SessionManager.Inhibitor.GetAppId
('test',)
$ gdbus call --session --dest org.gnome.SessionManager --object-path
/org/gnome/SessionManager/Inhibitor1686 --method
org.gnome.SessionManager.Inhibitor.GetReason
('manual idle inhibit',)
$ gdbus call --session --dest org.gnome.SessionManager --object-path
/org/gnome/SessionManager/Inhibitor1686 --method
org.gnome.SessionManager.Inhibitor.GetFlags
(uint32 12,)
12=4(suspend) + 8(idle)
5) When testing, I can inhibit for 70 seconds, idle timeout being 60
(1 minute). After these 70 seconds pass, the screen locks.
6) Regarding Chrome, this is the information I get when querying the
inhibitor:
GetAppId: ('/usr/bin/google-chrome-stable',)
GetReason: ('Uploading data to 10.200.0.163',)
GetFlags: (uint32 4,)
The flags just inhibits suspend, not locking or entering powersaving
mode.
This inhibitor seems to stay for 10-15 seconds, then goes away for
another 30-60 seconds. The screen NEVER locks when this tab is open.
No matter the inhibitor is present or not.
I'm not sure where to go on. If it's a Chrome bug it must be using
other mechanisms to prevent the idle timeout. Any ideas on what to
look for?
Julian.
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