I'm seeing this same issue (hung syscall on VT) from systemd-sleep on a
suspend operation with Xubuntu (and therefore lightdm). I see a similar
stack-trace too. 18.04 with 4.15.0-56-lowlatency.
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1744370
apt list plymouth
Listing... Done
plymou
** Tags added: oem-priority
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https://bugs.launchpad.net/bugs/1817738
Title:
Can't change virtual terminal on login screen or when auto-login is
enabled
To manage notifications about
** Changed in: oem-priority
Status: Fix Committed => Fix Released
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Title:
Can't change virtual terminal on login screen or when auto-login
** Tags added: lp-1804607 somerville
** Changed in: oem-priority
Assignee: (unassigned) => Yuan-Chen Cheng (ycheng-twn)
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Title:
Can't chang
This bug was fixed in the package plymouth - 0.9.3-1ubuntu7.18.04.2
---
plymouth (0.9.3-1ubuntu7.18.04.2) bionic; urgency=medium
[ Mauricio Faria de Oliveira ]
* d/p/0013-device-manager-don-t-watch-for-udev-events-when-deac_bionic.patch:
- Don't process udev events after we've
** Tags removed: sts-sponsor sts-sponsor-ddstreet
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Title:
Can't change virtual terminal on login screen or when auto-login is
enabled
To manag
** Changed in: oem-priority
Status: Confirmed => Fix Committed
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Title:
Can't change virtual terminal on login screen or when auto-login is
Verification successful with bionic-proposed.
Tested in login screen and auto-login session;
repeated 5 times with consistent results.
bionic-updates
--
$ dpkg -s plymouth | grep ^Version:
Version: 0.9.3-1ubuntu7.18.04.1
$ grep -wo splash /proc/cmdline
splash
$ dmesg | grep console
Hello Eric, or anyone else affected,
Accepted plymouth into bionic-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/plymouth/0.9.3-1ubuntu7.18.04.2 in
a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
h
https://launchpad.net/ubuntu/+source/gdm3/+publishinghistory
Deleted Bionic proposedmaingnome 3.28.3-0ubuntu18.04.5
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Title:
Can't
** Tags added: sts-sponsor sts-sponsor-ddstreet
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Title:
Can't change virtual terminal on login screen or when auto-login is
enabled
To manage
** Also affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: gdm3 (Ubuntu)
Status: New => Invalid
** Changed in: gdm3 (Ubuntu Bionic)
Status: New => Invalid
** Also affects: plymouth (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also a
Thanks for checking and fixing up this, Eric and Dan. :)
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Title:
Can't change virtual terminal on login screen or when auto-login is
enabled
T
Sponsor note:
Before uploading plymouth, I would prefer we ask SRU team to drop the
gdm3 workaround in bionic-proposed (which failed anyway due to
regression in gnome-shell).
Once gdm3 is dropped, I'm fine with sts-sponsor to proceed with the
upload of plymouth.
- Eric
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You received this bug
The root cause of this problem is plymouth, indeed.
The 'chvt N' command blocks if the VT/tty is in VT_AUTO + KD_GRAPHICS
state.
In this state the kernel bails out early in the ioctl(VT_ACTIVATE) syscall
and does not post the VT_EVENT_SWITCH event the ioctl(VT_WAITACTIVE) syscall
will be waiting
** Patch added: "plymouth_bionic.debdiff"
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1817738/+attachment/5252486/+files/plymouth_bionic.debdiff
** Also affects: plymouth (Ubuntu)
Importance: Undecided
Status: New
** Changed in: plymouth (Ubuntu)
Status: New => Confir
** Summary changed:
- Can't change virtual terminal when auto-login is enabled
+ Can't change virtual terminal on login screen or when auto-login is enabled
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