lightdm-gtk-greeter-team team mailing list archive

[kortewegdevries <1890394@xxxxxxxxxxxxxxxxxx>]

On Thu, 05 Nov 2020 15:20:18 -0000
Andy Whitcroft <1890394@xxxxxxxxxxxxxxxxxx> wrote:

> Hello kortewegdevries, or anyone else affected,
> 
> Accepted lightdm-gtk-greeter into bionic-proposed. The package will
> build now and be available at https://launchpad.net/ubuntu/+source
> /lightdm-gtk-greeter/2.0.5-0ubuntu2 in a few hours, and then in the
> -proposed repository.
> 
> Please help us by testing this new package.  See
> https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
> to enable and use -proposed.  Your feedback will aid us getting this
> update out to other Ubuntu users.
> 
> If this package fixes the bug for you, please add a comment to this bug,
> mentioning the version of the package you tested, what testing has been
> performed on the package and change the tag from verification-needed-
> bionic to verification-done-bionic. If it does not fix the bug for you,
> please add a comment stating that, and change the tag to verification-
> failed-bionic. In either case, without details of your testing we will
> not be able to proceed.

Hello sorry for the delay. The original problem mentioned in the bug
report has now been fixed for me. Here are the details and attached
logs. (I haven't seen ny irregularites.)

lightdm 			1.30.0-0ubuntu3.1
lightdm-gtk-greeter 		2.0.6-0ubuntu2
lightdm-gtk-greeter-settings 	1.2.2-3
systemd 			246.6-1ubuntu1	
linux 				5.8.0-26-generic


** Attachment added: "lightdm.log"
   https://bugs.launchpad.net/bugs/1890394/+attachment/5432068/+files/lightdm.log

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You received this bug notification because you are a member of LightDM
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greeter in Ubuntu.
https://bugs.launchpad.net/bugs/1890394

Title:
  Lightdm-gtk-greeter coredump during boot with recent systemd versions

Status in lightdm-gtk-greeter package in Ubuntu:
  Fix Released
Status in lightdm-gtk-greeter source package in Bionic:
  Fix Committed
Status in lightdm-gtk-greeter source package in Groovy:
  Fix Committed

Bug description:
  * Impact
  The lightdm-gtk-greeter often segfaults on VMs

  * Test case
  - start a xubuntu livesession in a VM and logout
  -> you should get a greeter to log in
  (or install xubuntu in a VM)

  * Regression potential
  the mlockall call was supposed to provide improved security but isn't working, it was already commented out some cycles ago in unity-greeter, upstream and it other distributions

  ------------------

  Upstream:https://github.com/Xubuntu/lightdm-gtk-greeter/issues/77

  This is one of the many core dumps on `journalctl` for a given boot
  (dumps multiple times before starting) :

  **See it on upstream bug report**

  System Details:

  System:
  Kernel: 5.8.0-12-generic x86_64 bits: 64 compiler: N/A Desktop:
  Xfce 4.14.2
  Distro: Ubuntu 20.10 (Groovy Gorilla) (*Proposed)

  lightdm                       1.30.0-0ubuntu3.1: amd64
  lightdm-gtk-greeter           2.0.6-0ubuntu1:amd64
  lightdm-gtk-greeter-settings  1.2.2-3
  linux-firmware                1.189
  ------------------------------------------------------
  systemd,systemd-coredump,
  systemd-sysv                                245.7-1ubuntu1
  ------------------------------------------------------

  OpenGL ES 3.2
  Mesa 20.2.0-devel

  [lightdm.log](https://termbin.com/eipz)
  [coredumpctl](https://termbin.com/chr2)
  [gdb_backtrace](https://termbin.com/645a)

  Current Behaviour:

  On boot screen blinks for 2-3 times (probably the segmentation fault)
  but eventually starts after 1-2 minutes.

  Expected Behaviour:

  Greeter would appear properly after boot.

  Note: Some other systemd services are also failing on proposed, not
  sure if related.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: lightdm-gtk-greeter 2.0.6-0ubuntu1
  ProcVersionSignature: Ubuntu 5.8.0-12.13-generic 5.8.0-rc7
  Uname: Linux 5.8.0-12-generic x86_64
  ApportVersion: 2.20.11-0ubuntu43
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: XFCE
  Date: Wed Aug  5 12:58:44 2020
  InstallationDate: Installed on 2020-04-17 (109 days ago)
  InstallationMedia: Xubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200416)
  SourcePackage: lightdm-gtk-greeter
  UpgradeStatus: Upgraded to groovy on 2020-08-04 (0 days ago)

  modified.conffile..etc.lightdm.lightdm-gtk-greeter.conf:
  [greeter]
   indicators = ~session;~language;~a11y;~clock;~power
   default-user-image = /home/korte/Pictures/profile/profile.jpeg
  mtime.conffile..etc.lightdm.lightdm-gtk-greeter.conf: 2020-06-27T09:26:56.022638

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