Lock-screen not retained when exit screensaver
On my 18.04, if I lock my session, when exit the screensaver, in particular conditions, my session is no longer locked and it is accessible without typing password. In terms of security, it's ugly. The lock-screen works fine, because if I lock my session, the password is required before the screensaver appears. As soon as the screensaver activates, then when exit screensaver, no more lock-screen. My display is a TV plugged in HDMI that I switch off after enabled lock-screen. Sometimes, the lock-screen is retained when exit screensaver. Could you help me to keep the lock-screen when exit the screensaver? I don't want to enable the lock-screen systematically when exit the screensaver, only if I enabled the lock-screen manually. Thank you in advance
Edit:
In my opinion, it's a critical security bug, because I can easily reproduce the problem. It seems to appears only with HDMI TV with the below conditions.
https://www.dropbox.com/s/jrh1pnln38uizi4/Ub-Mate-lock-screen-issue.mp4?dl=0
Steps to reproduce the issue :
- Enable the locks-creen
- Check it's locked
- Press Escape to blank the screen
- Switch off the TV HDMI
- Wait 10 s
- Press Ctrl to wake-up the lock-screen
- Switch on the TV
- The lock-screen is done!
- After, no way to enable the lock-screen immediatly
Edit:
$ apt-cache policy xscreensaver mate-screensaver gdm
xscreensaver:
Installé : (aucun)
Candidat : 5.36-1ubuntu1
Table de version :
5.36-1ubuntu1 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
mate-screensaver:
Installé : 1.20.0-1
Candidat : 1.20.0-1
Table de version :
*** 1.20.0-1 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
gdm:
Installé : (aucun)
Candidat : (aucun)
Table de version :
$
lock-screen screensaver
asked Dec 31 '18 at 16:39
NicolasSmithNicolasSmith
3891315
add a comment |
On my 18.04, if I lock my session, when exit the screensaver, in particular conditions, my session is no longer locked and it is accessible without typing password. In terms of security, it's ugly. The lock-screen works fine, because if I lock my session, the password is required before the screensaver appears. As soon as the screensaver activates, then when exit screensaver, no more lock-screen. My display is a TV plugged in HDMI that I switch off after enabled lock-screen. Sometimes, the lock-screen is retained when exit screensaver. Could you help me to keep the lock-screen when exit the screensaver? I don't want to enable the lock-screen systematically when exit the screensaver, only if I enabled the lock-screen manually. Thank you in advance
Edit:
In my opinion, it's a critical security bug, because I can easily reproduce the problem. It seems to appears only with HDMI TV with the below conditions.
https://www.dropbox.com/s/jrh1pnln38uizi4/Ub-Mate-lock-screen-issue.mp4?dl=0
Steps to reproduce the issue :
- Enable the locks-creen
- Check it's locked
- Press Escape to blank the screen
- Switch off the TV HDMI
- Wait 10 s
- Press Ctrl to wake-up the lock-screen
- Switch on the TV
- The lock-screen is done!
- After, no way to enable the lock-screen immediatly
Edit:
$ apt-cache policy xscreensaver mate-screensaver gdm
xscreensaver:
Installé : (aucun)
Candidat : 5.36-1ubuntu1
Table de version :
5.36-1ubuntu1 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
mate-screensaver:
Installé : 1.20.0-1
Candidat : 1.20.0-1
Table de version :
*** 1.20.0-1 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
gdm:
Installé : (aucun)
Candidat : (aucun)
Table de version :
$
lock-screen screensaver
asked Dec 31 '18 at 16:39
NicolasSmithNicolasSmith
3891315
It seems that you have two lock screens. Please add output ofapt-cache policy xscreensaver mate-screensaver gdmto the question.
– N0rbert
Dec 31 '18 at 17:12
@N0rbert: done. One screensaver it seems.
– NicolasSmith
Jan 1 at 10:07
I can't reproduce your issue on clean Ubuntu MATE 18.04 LTS installation. Please provide more details - package names, method of MATE installation, screencast and so on.
– N0rbert
Jan 1 at 10:22
Crossposted on Mate forum: ubuntu-mate.community/t/…
– NicolasSmith
Jan 1 at 18:51
add a comment |
On my 18.04, if I lock my session, when exit the screensaver, in particular conditions, my session is no longer locked and it is accessible without typing password. In terms of security, it's ugly. The lock-screen works fine, because if I lock my session, the password is required before the screensaver appears. As soon as the screensaver activates, then when exit screensaver, no more lock-screen. My display is a TV plugged in HDMI that I switch off after enabled lock-screen. Sometimes, the lock-screen is retained when exit screensaver. Could you help me to keep the lock-screen when exit the screensaver? I don't want to enable the lock-screen systematically when exit the screensaver, only if I enabled the lock-screen manually. Thank you in advance
Edit:
In my opinion, it's a critical security bug, because I can easily reproduce the problem. It seems to appears only with HDMI TV with the below conditions.
https://www.dropbox.com/s/jrh1pnln38uizi4/Ub-Mate-lock-screen-issue.mp4?dl=0
Steps to reproduce the issue :
- Enable the locks-creen
- Check it's locked
- Press Escape to blank the screen
- Switch off the TV HDMI
- Wait 10 s
- Press Ctrl to wake-up the lock-screen
- Switch on the TV
- The lock-screen is done!
- After, no way to enable the lock-screen immediatly
Edit:
$ apt-cache policy xscreensaver mate-screensaver gdm
xscreensaver:
Installé : (aucun)
Candidat : 5.36-1ubuntu1
Table de version :
5.36-1ubuntu1 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
mate-screensaver:
Installé : 1.20.0-1
Candidat : 1.20.0-1
Table de version :
*** 1.20.0-1 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
gdm:
Installé : (aucun)
Candidat : (aucun)
Table de version :
$
lock-screen screensaver
asked Dec 31 '18 at 16:39
NicolasSmithNicolasSmith
3891315
On my 18.04, if I lock my session, when exit the screensaver, in particular conditions, my session is no longer locked and it is accessible without typing password. In terms of security, it's ugly. The lock-screen works fine, because if I lock my session, the password is required before the screensaver appears. As soon as the screensaver activates, then when exit screensaver, no more lock-screen. My display is a TV plugged in HDMI that I switch off after enabled lock-screen. Sometimes, the lock-screen is retained when exit screensaver. Could you help me to keep the lock-screen when exit the screensaver? I don't want to enable the lock-screen systematically when exit the screensaver, only if I enabled the lock-screen manually. Thank you in advance
Edit:
In my opinion, it's a critical security bug, because I can easily reproduce the problem. It seems to appears only with HDMI TV with the below conditions.
https://www.dropbox.com/s/jrh1pnln38uizi4/Ub-Mate-lock-screen-issue.mp4?dl=0
Steps to reproduce the issue :
- Enable the locks-creen
- Check it's locked
- Press Escape to blank the screen
- Switch off the TV HDMI
- Wait 10 s
- Press Ctrl to wake-up the lock-screen
- Switch on the TV
- The lock-screen is done!
- After, no way to enable the lock-screen immediatly
Edit:
$ apt-cache policy xscreensaver mate-screensaver gdm
xscreensaver:
Installé : (aucun)
Candidat : 5.36-1ubuntu1
Table de version :
5.36-1ubuntu1 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
mate-screensaver:
Installé : 1.20.0-1
Candidat : 1.20.0-1
Table de version :
*** 1.20.0-1 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
gdm:
Installé : (aucun)
Candidat : (aucun)
Table de version :
$
lock-screen screensaver
lock-screen screensaver
asked Dec 31 '18 at 16:39
NicolasSmithNicolasSmith
3891315
asked Dec 31 '18 at 16:39
NicolasSmithNicolasSmith
3891315
edited Jan 2 at 8:12
NicolasSmith
asked Dec 31 '18 at 16:39
NicolasSmithNicolasSmith
3891315
asked Dec 31 '18 at 16:39
NicolasSmithNicolasSmith
3891315
asked Dec 31 '18 at 16:39
NicolasSmithNicolasSmith
3891315
3891315
It seems that you have two lock screens. Please add output ofapt-cache policy xscreensaver mate-screensaver gdmto the question.
– N0rbert
Dec 31 '18 at 17:12
@N0rbert: done. One screensaver it seems.
– NicolasSmith
Jan 1 at 10:07
I can't reproduce your issue on clean Ubuntu MATE 18.04 LTS installation. Please provide more details - package names, method of MATE installation, screencast and so on.
– N0rbert
Jan 1 at 10:22
Crossposted on Mate forum: ubuntu-mate.community/t/…
– NicolasSmith
Jan 1 at 18:51
add a comment |
It seems that you have two lock screens. Please add output ofapt-cache policy xscreensaver mate-screensaver gdmto the question.
– N0rbert
Dec 31 '18 at 17:12
@N0rbert: done. One screensaver it seems.
– NicolasSmith
Jan 1 at 10:07
I can't reproduce your issue on clean Ubuntu MATE 18.04 LTS installation. Please provide more details - package names, method of MATE installation, screencast and so on.
– N0rbert
Jan 1 at 10:22
Crossposted on Mate forum: ubuntu-mate.community/t/…
– NicolasSmith
Jan 1 at 18:51
It seems that you have two lock screens. Please add output of
apt-cache policy xscreensaver mate-screensaver gdm to the question.– N0rbert
Dec 31 '18 at 17:12
It seems that you have two lock screens. Please add output of
apt-cache policy xscreensaver mate-screensaver gdm to the question.– N0rbert
Dec 31 '18 at 17:12
@N0rbert: done. One screensaver it seems.
– NicolasSmith
Jan 1 at 10:07
@N0rbert: done. One screensaver it seems.
– NicolasSmith
Jan 1 at 10:07
I can't reproduce your issue on clean Ubuntu MATE 18.04 LTS installation. Please provide more details - package names, method of MATE installation, screencast and so on.
– N0rbert
Jan 1 at 10:22
I can't reproduce your issue on clean Ubuntu MATE 18.04 LTS installation. Please provide more details - package names, method of MATE installation, screencast and so on.
– N0rbert
Jan 1 at 10:22
Crossposted on Mate forum: ubuntu-mate.community/t/…
– NicolasSmith
Jan 1 at 18:51
Crossposted on Mate forum: ubuntu-mate.community/t/…
– NicolasSmith
Jan 1 at 18:51
add a comment |
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It seems that you have two lock screens. Please add output of
apt-cache policy xscreensaver mate-screensaver gdmto the question.– N0rbert
Dec 31 '18 at 17:12
@N0rbert: done. One screensaver it seems.
– NicolasSmith
Jan 1 at 10:07
I can't reproduce your issue on clean Ubuntu MATE 18.04 LTS installation. Please provide more details - package names, method of MATE installation, screencast and so on.
– N0rbert
Jan 1 at 10:22
Crossposted on Mate forum: ubuntu-mate.community/t/…
– NicolasSmith
Jan 1 at 18:51