[Bug 1667113] Re: System users appears in Ligthdm and user switcher (Accountsservice has no filter for shell types)

[Madan Hegde]

I had been facing the same problem along with one more user account named "No value has been set".
For "Libvirt Qemu" tried purging "qemu-kvm" and it's configuration files. But still user account was existed. I had been trying for the solution and found one that you can also try. (I'm using linux mint 18.2 Sonya)

Go to location /etc/ as root and find a file named "passwd" and open it. Now find the line 
"libvirt-qemu:x:64055:132:Libvirt Qemu,,,:/var/lib/libvirt:/bin/false" (see the image I attached not to get confused, values may vary in your case)  and clear it (don't clear any other line which is not related to "libvirt-qemu"). I found that line almost at the end of the list.

If you're having one more user account named "No value has been set" then clear the line below:
"<admin name>:x:1001:1002:No value has been set:/dev/null:/dev/null" (values may vary in your case)

And now I don't have these user accounts or any other issue after
removing those values: "libvirt qemu" and "No value has been set"

** Attachment added: "IMG_20170914_192319.jpg"
   https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1667113/+attachment/4950189/+files/IMG_20170914_192319.jpg

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https://bugs.launchpad.net/bugs/1667113

Title:
  System users appears in Ligthdm and user switcher (Accountsservice has
  no filter for shell types)

Status in accountsservice package in Ubuntu:
  Confirmed
Status in base-passwd package in Ubuntu:
  Invalid
Status in ceph package in Ubuntu:
  Confirmed
Status in ifmail package in Ubuntu:
  Confirmed
Status in libvirt package in Ubuntu:
  Confirmed
Status in lightdm package in Ubuntu:
  Confirmed
Status in netqmail package in Ubuntu:
  Confirmed
Status in sddm package in Ubuntu:
  Fix Released

Bug description:
  "Technical" user libvirt Qemu appears in the list of user in Ligthdm,
  among the real regular users. It probably shouldn't

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: libvirt-bin 2.5.0-3ubuntu2
  ProcVersionSignature: Ubuntu 4.9.0-15.16-generic 4.9.5
  Uname: Linux 4.9.0-15-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
  ApportVersion: 2.20.4-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity:Unity7
  Date: Wed Feb 22 22:09:24 2017
  InstallationDate: Installed on 2017-02-01 (21 days ago)
  InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Alpha amd64 (20170201)
  KernLog:
   
  SourcePackage: libvirt
  UpgradeStatus: No upgrade log present (probably fresh install)

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