I'm going to close this bug, since it's so old and the exact causes are
unclear. If you are experiencing issues like this please open new bugs
as that will make it easier to work out the issue. Also see bug 1566073
which may resolve some of these problems.
** Changed in: lightdm
Status:
Experiencing it on Ubuntu 14.04, lightdm 1.9.6
Steps to reproduce
1. Login as user1 (starts session on vt7)
2. Switch to user2 (starts session on vt8)
3. Try to switch to user1 session.
Attempt brings to black X screen (just cross mouse pointer). It seems lightdm
starts X only on vt9.
Thus,
** Changed in: xorg-server (Ubuntu Oneiric)
Status: Triaged = Won't Fix
** Changed in: lightdm (Ubuntu Oneiric)
Status: Triaged = Won't Fix
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This bug seems to be fixed by this descriptions:
https://bugzilla.redhat.com/show_bug.cgi?id=859347
** Bug watch added: Red Hat Bugzilla #859347
https://bugzilla.redhat.com/show_bug.cgi?id=859347
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I am also experiencing this problem with lightdm 1.4 and lightdm-kde on
Arch Linux. Steps to reproduce:
1. Login as User1.
2. Start a new session as User2.
3. Switch back to User1.
4. Log out as User1.
5. Screen sits with blinking cursor. I can manually switch to User2
using FN + F8, or
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg-server (Ubuntu Precise)
Status: New = Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: lightdm (Ubuntu Precise)
Status: New = Confirmed
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** Also affects: lightdm (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: xorg-server (Ubuntu Precise)
Importance: Undecided
Status: New
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Seems that this fix does not work well with a multiseat setup...
Saw this in lightdm.log (system call interrupted because of ctrl-alt-del
pressed):
[+2.97s] DEBUG: New display ready, switching to it
[+2.97s] DEBUG: Activating VT 8
[+77.56s] WARNING: Error using VT_WAITACTIVE 8 on /dev/console:
Forgot to mention that I'm using precise with lightdm 1.2.0-0ubuntu2.
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https://bugs.launchpad.net/bugs/851612
Title:
Logging out from a FUS session does not reliably
** Changed in: lightdm (Ubuntu)
Milestone: ubuntu-12.04-beta-2 = ubuntu-12.04
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Title:
Logging out from a FUS session does not
** Changed in: xorg-server (Ubuntu Oneiric)
Status: Confirmed = Triaged
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Title:
Logging out from a FUS session does not
** Description changed:
+ [Impact]
+ fill me in with explanation of severity and frequency of bug on users and
justification for backporting the fix to the stable release
+
+ [Development Fix]
+ fill me in with an explanation of how the bug has been addressed in the
development branch,
Unsubscribing sponsors as per Martin Pitt's comment #21, as the patch is
not suitable for SRU.
However, I've gone ahead and fleshed out the SRU request in the
description. Hopefully that'll save a bit of work if/when a valid fix
does become available.
Shih-Yuan, thank you for your attention to
Martin, no problem.
I'm sorry to disturb you.
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Title:
Logging out from a FUS session does not reliably return to VT7
Status in
Shih-Yuan, Robert said that there is still a lockup, and it is not yet
fixed properly in precise. So it seems a little premature to upload this
to stable at this point? Also, the SRU policy forbids this, bugs need to
be fixed in the development release (precise) first.
Thanks!
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This debdiff is for oneiric.
Please help to sponsor this patch.
Thanks.
** Patch added: lightdm_patch_for_oneiric.debdiff
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/851612/+attachment/2879830/+files/lightdm_patch_for_oneiric.debdiff
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The attachment lightdm_patch_for_oneiric.debdiff of this bug report
has been identified as being a patch in the form of a debdiff. The
ubuntu-sponsors team has been subscribed to the bug report so that they
can review and hopefully sponsor the debdiff. In the event that this is
in fact not a
** Tags added: blocks-hwcert-enablement
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Title:
Logging out from a FUS session does not reliably return to VT7
Status in Light
** Changed in: lightdm (Ubuntu)
Milestone: ubuntu-12.04-beta-1 = ubuntu-12.04-beta-2
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Title:
Logging out from a FUS session
Putting back to triaged - the uploaded fix solves some of the problems
but there's still a lockup that is being worked on.
** Changed in: lightdm (Ubuntu)
Status: Fix Released = Triaged
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** Branch linked: lp:~ubuntu-desktop/lightdm/ubuntu
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Title:
Logging out from a FUS session does not reliably return to VT7
This bug was fixed in the package lightdm - 1.1.2-0ubuntu1
---
lightdm (1.1.2-0ubuntu1) precise; urgency=low
* New upstream release:
- Add regression tests for getting the user language and layout
- Stop accidentally distributing libsystem
- Fix introspection bindings
** Branch linked: lp:ubuntu/lightdm
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Title:
Logging out from a FUS session does not reliably return to VT7
Status in Light
** Changed in: xorg-server (Ubuntu)
Assignee: (unassigned) = Chris Halse Rogers (raof)
** Changed in: xorg-server (Ubuntu)
Status: Confirmed = Triaged
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Chris Halse Rogers had a look into this and he came to the conclusion
that adding a VT_WAITACTIVE after the VT_ACTIVATE ioctl may help the
situation. It looks like there is a race condition somewhere between
LightDM, the kernel, ConsoleKit and X and adding the VT_WAITACTIVE
either solves this (or
I am also experiencing this issue.
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Title:
Logging out from a FUS session does not reliably return to VT7
Status in Light
** Changed in: lightdm (Ubuntu)
Milestone: oneiric-updates = ubuntu-12.04-beta-1
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Title:
Logging out from a FUS session does
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg-server (Ubuntu)
Status: New = Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg-server (Ubuntu Oneiric)
Status: New = Confirmed
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Still no progress on finding out why this is occurring. Some speculation:
- ConsoleKit is intercepting the VT switch and stopping it working. GDM uses
ConsoleKit to do the VT switching but this is not easy to do in LightDM with
the current architecture (it doesn't assume that CK is available,
** Also affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
** Changed in: xorg-server (Ubuntu)
Importance: Undecided = High
** Changed in: xorg-server (Ubuntu Oneiric)
Importance: Undecided = High
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This bug persist in final release of Oneiric...
I have upgraded another computer from 11.04 to 11.10 yesterday an this
bug is happened to on this computer.
I can't switch to another user if a session is opened and i can't return
to my session ... I must restart to login.
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I think I experienced the same thing just now. I was testing a few
different shells, lxpanel, gnome-shell, unity-2d, and unity. Sometimes,
when logging out, I was not presented with a login screen. I've also
noticed that this can happen when the screen is automatically locked
because of
I sometimes get this bug as well, but in most cases it works. I get
perhaps one failure in four tries. So the reproduction recipe has to be
carried out several times, possibly with reboots in between.
** Changed in: lightdm (Ubuntu Oneiric)
Milestone: ubuntu-11.10 = oneiric-updates
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** Changed in: lightdm
Status: New = Triaged
** Changed in: lightdm
Importance: Undecided = High
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Title:
Logging out
Seems this needed more tries - I'm still getting it. Whenever I'm
hitting the bug, the X process from the second user is still around
after logging out (I guess it doesn't matter that it's not having the
-background none parameter?).
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** Also affects: lightdm
Importance: Undecided
Status: New
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Title:
Logging out from a FUS session does not reliably
** Tags added: rls-mgr-o-tracking
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Title:
Logging out from a FUS session does not reliably return to VT7
Status in “lightdm”
I just tried this today and it's behaving correctly for me (lightdm
1.0.0, unity-greeter 0.1.1).
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Title:
Logging out from a FUS
Robert, do you know if there was a recent fix for it? I run into it
yesterday with current Oneiric, I will try today with the current
updates though
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Seems to work with those versions.
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Title:
Logging out from a FUS session does not reliably return to VT7
Status in “lightdm”
No, there were no changes in lightdm around this code. It's possible
that something in the kernel/video drivers changed?
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Title:
** Changed in: lightdm (Ubuntu Oneiric)
Milestone: None = ubuntu-11.10
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Title:
Logging out from a FUS session does not
Confirmed the behaviour. Note from my logs LightDM is doing the correct thing
and switching to the right VT (only relevant log items shown):
[+24642.17s] DEBUG: User bob authorized
...
[+24642.19s] DEBUG: Greeter requests session ubuntu
[+24642.20s] DEBUG: Switching to existing session for user
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