I was afflicted by a similar rolling-ttm_validate hang, see bug#1434396 comment#25
Solution in my case was 'apt-get install pam-kwallet5'
If this helps here too, then it might be worth looking at how events from multiple displays are handled, when they're actually from a common all-displays client (like the lock screen)
I was afflicted by a similar rolling- ttm_validate hang, see bug#1434396 comment#25
Solution in my case was 'apt-get install pam-kwallet5'
If this helps here too, then it might be worth looking at how events from multiple displays are handled, when they're actually from a common all-displays client (like the lock screen)