[Bug 1644237] Re: unity8 fails to start as guest user

[Michał Sawicz]

** Changed in: canonical-devices-system-image
   Status: In Progress => Fix Released

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  unity8 fails to start as guest user

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michael Terry]

lightdm (1.22.0-0ubuntu1) zesty; urgency=medium

  * Allow guest sessions to talk to Mir (allowing unity8)

 -- Robert Ancell   Wed, 22 Mar 2017
09:46:38 +1300

** Changed in: lightdm (Ubuntu)
   Status: In Progress => Fix Released

** Changed in: lightdm (Ubuntu)
 Assignee: Michael Terry (mterry) => (unassigned)

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michał Sawicz]

** Changed in: canonical-devices-system-image
Milestone: u8c-1 => u8c-z

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  unity8 fails to start as guest user

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[Bug 1644237] Re: unity8 fails to start as guest user

[Launchpad Bug Tracker]

This bug was fixed in the package unity8 - 8.15+17.04.20170321-0ubuntu1

---
unity8 (8.15+17.04.20170321-0ubuntu1) zesty; urgency=medium

  [ Albert Astals Cid ]
  * Signal aboutToShow (LP: #1664578)
  * Support Panel top level items to be disabled (LP: #1670694)
  * Improve Launcher ←→ touch menu interaction (LP: #1667620, #1671069)
  * Fix real world submenus (e.g. kate) not getting their first item
selected on open (LP: #1666859)

  [ Daniel d'Andrada ]
  * Really disable the window decoration when in staged mode (LP:
#1670361)
  * Don't let clients resize their surfaces while in staged
(phone/tablet) mode (LP: #1670390)
  * TopLevelWindowModel: don't put hidden windows in the model (LP:
#1665286)

  [ Lukáš Tinkl ]
  * Reset always-show-osk gsetting on startup to default value (false
atm)
  * Fix the restored-to position with Miral due to the state changes
being async (LP: #1669819)
  * Add a cursor name fallback mapping "grabbing" -> "closedhand" for
Breeze
  * Fix unsnapping a maximized window from the panel (LP: #1671721)
  * Disable altDrag feature outside windowed mode

  [ Michael Terry ]
  * Don't lock the screen for guest users or users in the nopasswdlogin
group. (LP: #1644237)
  * Support GNOME-style logout DBus API (making the Logout, Reboot, and
Shutdown launcher commands work) (LP: #1673229)

  [ Michael Zanetti ]
  * Add support for closing apps from the spread with "Q" (LP: #1670327)
  * hide "private" launcher quicklist entries when the greeter is locked
(LP: #1667649)
  * add surface titles to launcher's quicklist (LP: #1661668)
  * properly reset the drawer state when cancelling a horizontal drag
(LP: #1669536)
  * fix the focus moving correctly between launcher and drawer (LP:
#1669880)
  * unfocus the drawer's textfield when it is moved (LP: #1669839)

  [ Pete Woods ]
  * Fix up indicators-client after refactoring (LP: #1672797)

 -- Michał Sawicz   Tue, 21 Mar 2017
10:58:13 +

** Changed in: unity8 (Ubuntu)
   Status: In Progress => Fix Released

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  unity8 fails to start as guest user

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michael Terry]

Filed bug 1673097 about the guest session dialog.

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michael Terry]

Hmm, unity8 also doesn't show the "this session and all its data will be
deleted when you log out" warning that unity7 does.  Because zenity
isn't allowed to connect to Mir.  Looking at how we might deal with
that.

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michael Terry]

** Changed in: unity8 (Ubuntu)
   Status: Incomplete => In Progress

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michael Terry]

** Branch linked: lp:~mterry/unity8/guest-lockscreen

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michał Sawicz]

** Changed in: canonical-devices-system-image
   Status: Triaged => In Progress

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michael Terry]

OK, I've got a branch up that adds permission to talk to the USC
mir_socket to lightdm's apparmor profile for guests.

Bug 1593407 is indeed separate (though it also will involve editing the
guest apparmor profile).  Not only can snaps not be run in a guest
session, but they aren't listed in the app drawer either, because we
can't talk to snapd.

When testing this, I also noticed a bug in unity8.  The screen gets
locked due to a timeout.  But the guest user can't unlock the screen.
Looking at that.

** No longer affects: unity8-desktop-session (Ubuntu)

** Changed in: lightdm (Ubuntu)
   Status: Confirmed => In Progress

** Changed in: lightdm (Ubuntu)
 Assignee: (unassigned) => Michael Terry (mterry)

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  unity8 fails to start as guest user

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michael Terry]

** Branch linked: lp:~mterry/lightdm/guest-permissions

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michał Sawicz]

** Changed in: canonical-devices-system-image
   Status: Confirmed => Triaged

** Changed in: unity8 (Ubuntu)
 Assignee: (unassigned) => Michael Terry (mterry)

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  unity8 fails to start as guest user

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[Bug 1644237] Re: unity8 fails to start as guest user

[kevin gunn]

** Changed in: canonical-devices-system-image
Milestone: None => u8c-1

** Changed in: canonical-devices-system-image
 Assignee: (unassigned) => Michał Sawicz (saviq)

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[Bug 1644237] Re: unity8 fails to start as guest user

[Daniel van Vugt]

Probably not related directly to bug 1593407. Because duplicate bug
1307618 shows we've had this problem since 2014, before snaps existed.

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[Bug 1644237] Re: unity8 fails to start as guest user

[Timo Aaltonen]

looks like it

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[Bug 1644237] Re: unity8 fails to start as guest user

[Oliver Grawert]

related to bug 1593407 ?

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  unity8 fails to start as guest user

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[Bug 1644237] Re: unity8 fails to start as guest user

[Daniel van Vugt]

** Tags added: unity8-desktop

** Also affects: canonical-devices-system-image
   Importance: Undecided
   Status: New

** Changed in: canonical-devices-system-image
   Status: New => Confirmed

** Changed in: canonical-devices-system-image
   Importance: Undecided => High

** Changed in: lightdm (Ubuntu)
   Importance: Undecided => High

** Changed in: unity8 (Ubuntu)
   Importance: Undecided => High

** Changed in: unity8-desktop-session (Ubuntu)
   Importance: Undecided => High

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[Bug 1644237] Re: unity8 fails to start as guest user

[Timo Aaltonen]

dmesg shows these:
[   58.054017] audit: type=1400 audit(1479927387.876:54): apparmor="DENIED" 
operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" 
name="/proc/sys/kernel/cap_last_cap" pid=3034 comm="gnome-keyring-d" 
requested_mask="r" denied_mask="r" fsuid=998 ouid=0
[   58.076612] audit: type=1400 audit(1479927387.900:55): apparmor="DENIED" 
operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" 
name="/proc/sys/kernel/cap_last_cap" pid=3048 comm="gnome-keyring-d" 
requested_mask="r" denied_mask="r" fsuid=998 ouid=0
[   58.148996] audit: type=1400 audit(1479927387.972:56): apparmor="DENIED" 
operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" 
name="/proc/3081/fd/" pid=3081 comm="gpg-agent" requested_mask="r" 
denied_mask="r" fsuid=998 ouid=0
[   58.465172] audit: type=1400 audit(1479927388.288:57): apparmor="DENIED" 
operation="connect" profile="/usr/lib/lightdm/lightdm-guest-session" 
name="/run/snapd.socket" pid=3195 comm="content-hub-pee" requested_mask="w" 
denied_mask="w" fsuid=998 ouid=0
[   58.467504] audit: type=1400 audit(1479927388.288:58): apparmor="DENIED" 
operation="connect" profile="/usr/lib/lightdm/lightdm-guest-session" 
name="/run/snapd.socket" pid=3195 comm="content-hub-pee" requested_mask="w" 
denied_mask="w" fsuid=998 ouid=0
[   58.552978] audit: type=1400 audit(1479927388.376:59): apparmor="DENIED" 
operation="bind" profile="/usr/lib/lightdm/lightdm-guest-session" pid=3184 
comm="ibus-daemon" family="unix" sock_type="stream" protocol=0 
requested_mask="bind" denied_mask="bind" addr="@/tmp/ibus/dbus-JNJFS8e2"

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Title:
  unity8 fails to start as guest user

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[Bug 1644237] Re: unity8 fails to start as guest user

[Christopher Townsend]

This has been the case since day 1 of Unity on the desktop.  See bug
#1307618.  Not sure why we never added unity8 to that bug, so let's dupe
that bug to this one.

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[Bug 1644237] Re: unity8 fails to start as guest user

[Christopher Townsend]

Err, I meant Unity *8* on the desktop:)

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[Bug 1644237] Re: unity8 fails to start as guest user

[Launchpad Bug Tracker]

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

** Changed in: lightdm (Ubuntu)
   Status: New => Confirmed

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[Bug 1644237] Re: unity8 fails to start as guest user

[Launchpad Bug Tracker]

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

** Changed in: unity8-desktop-session (Ubuntu)
   Status: New => Confirmed

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michał Sawicz]

The "Permission denied" error suggests the apparmor profile, or whatever
else lightdm is doing special to the guest session, is the reason for
this failure.

Can you check in syslog if you have a DENIED message from apparmor?

** Also affects: lightdm (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: unity8 (Ubuntu)
   Status: New => Incomplete

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[Bug 1644237] Re: unity8 fails to start as guest user

[Michał Sawicz]

** Also affects: unity8-desktop-session (Ubuntu)
   Importance: Undecided
   Status: New

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