linuxmint / linuxmint/cinnamon

LM22.1 will not accept password when waking up and switching user

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BUG
Dominant language
JavaScript
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Distribution

LM22.1

Package version

cinnamon 6.4

Graphics hardware in use

intel

Frequency

Always

Bug description

I press the spacebar and the system comes back from sleep and I see my normal lock screen but I clicked on the switch user icon and then selected my user. After entering my password that is accepted, it then blanked the screen and popped up an authentication box and that dialog would not accept my password. I just had to hit reset on the PC.

Steps to reproduce

system in suspend and choose switch user icon

Expected behavior

switch user and allow normal login

Additional information
Jan 21 07:16:17 office-pc-amd systemd[1]: Failed to start fwupd-refresh.service - Refresh fwupd metadata and update motd.
Jan 21 07:16:17 office-pc-amd bluetoothd[973]: profiles/sap/server.c:sap_server_register() Sap driver initialization failed.
Jan 21 07:16:17 office-pc-amd bluetoothd[973]: sap-server: Operation not permitted (1)
Jan 21 07:16:17 office-pc-amd bluetoothd[973]: Failed to set mode: Failed (0x03)
Jan 21 07:16:28 office-pc-amd lightdm[28111]: gkr-pam: couldn't unlock the login keyring.
Jan 21 07:16:35 office-pc-amd lightdm[28239]: gkr-pam: unable to locate daemon control file
Jan 21 07:16:35 office-pc-amd cinnamon-screensaver-pam-helper[27767]: pam_unix(cinnamon-screensaver:auth): conversation failed
Jan 21 07:16:35 office-pc-amd cinnamon-screensaver-pam-helper[27767]: pam_unix(cinnamon-screensaver:auth): auth could not identify password for [jim]
Jan 21 07:16:55 office-pc-amd cinnamon-screensaver-pam-helper[27768]: pam_unix(cinnamon-screensaver:auth): conversation failed
Jan 21 07:16:55 office-pc-amd cinnamon-screensaver-pam-helper[27768]: pam_unix(cinnamon-screensaver:auth): auth could not identify password for [martha]

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the suspend, switch-user, and login sequence, then inspect the cinnamon-screensaver PAM helper and the LightDM log entries shown in the report. Compare the authentication flow with the listed conversation failures; done means switching users after resume accepts the password and reaches the desktop without requiring a reset.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, linux
Domain
authentication, desktop, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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