** Changed in: lightdm
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/997483
Title:
VT_WAITACTIVE does not work well with a multiseat setup
To manage
[Expired for lightdm (Ubuntu) because there has been no activity for 60
days.]
** Changed in: lightdm (Ubuntu)
Status: Incomplete => Expired
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Should it be safe to install ligthdm package from zesty to xenial to
test if it fixes the issue? (https://packages.ubuntu.com/zesty/lightdm
version 1.22.0-0ubuntu2.1)
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Possibly fixed, and may need an SRU for older releases
lightdm (1.21.4-0ubuntu1) zesty; urgency=medium
* New upstream release:
- Use power management functions from ConsoleKit2 if available.
- Correctly pass return value from sessions to LightDM.
- Retry VT_WAITACTIVE if we get
Latest 'assigned' for that report have never done the job; removing him
to get a real fix chance.
** Changed in: lightdm (Ubuntu)
Assignee: Richard Hansen (rhansen) => (unassigned)
** Changed in: lightdm
Assignee: Richard Hansen (rhansen) => (unassigned)
** Changed in: lightdm
It seems to be that the problem occurs after this:
** (lightdm:1153): WARNING **: Error using VT_WAITACTIVE 7 on /dev/tty0:
Interrupted system call
(The console number depends on luck, of course.)
I would guess that whatever code is emitting that error message is not
handling the situation
Happening here, too, randomly after return from S3 (Ubuntu 16.04.3 LTS).
$ uname -a
Linux desktop 4.10.0-38-lowlatency #42~16.04.1-Ubuntu SMP PREEMPT Tue Oct 10
17:35:28 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Using integrated intel graphics on i5-3570K.
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This bug is happening on my machine, Ubuntu 16.04 LTS
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Title:
VT_WAITACTIVE does not work well with a multiseat setup
To manage notifications
Yup, still present in 16.04.2 Xubuntu. Couldn't log in due to this.
Returns back to the login screen. After restarting lightdm.service from
another tty, I could log in.
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I appear to still be having this problem in 16.04/Xenial
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Title:
VT_WAITACTIVE does not work well with a multiseat setup
To manage notifications
** Tags added: precise
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Title:
VT_WAITACTIVE does not work well with a multiseat setup
To manage notifications about this bug go to:
** Branch linked: lp:~a7x/lightdm/multiseat
** Branch unlinked: lp:~a7x/lightdm/multiseat-bad
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Title:
VT_WAITACTIVE does not work well with a
Sorry, since I don't have a multiseat setup any more, we'll need other's
help to do the test.
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Title:
VT_WAITACTIVE does not work well with a
LightDM currently assigns each seat a different VT, and each seat tries
to switch to its own VT when starting X. If I understand correctly,
these switches compete with each other, causing the problem.
The proper solution is to have only the primary seat switch VTs, then
have all other seats
** Tags added: multiseat
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Title:
VT_WAITACTIVE does not work well with a multiseat setup
To manage notifications about this bug go to:
Confirmed in Xubuntu 12.04 with a multiseat setup exactly as Jesse Sung
reported. Both seats get a greater, but neither has the password input
field.
Is there a workaround?
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Figured i might as well provide lightdm.log
[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.2.1, UID=0 PID=1342
[+0.00s] DEBUG: Loaded configuration from /etc/lightdm/lightdm.conf
[+0.00s] DEBUG: Using D-Bus name
After som digging, it looks like this is a related bug:
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/976124
Also would like to mention that Robert Ancell is assignend both of these
bugs (4 and 5 months old atm), but the importance for them is undecided
and both are at the bottom of his
** Also affects: lightdm
Importance: Undecided
Status: New
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Title:
VT_WAITACTIVE does not work well with a multiseat setup
To manage
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