Bug#870641: light-locker: screen stays black after closing and opening laptop lid
On 24.03.19 19:35, Udo Richter wrote:
I experience this behavior in most cases when light-locker kicks in as
screen saver. Closing the lid or suspending never triggers this. i965
driver on Sandybridge CPU. Ctrl-Alt-F6-F7 brings me to a
screen-is-locked display, and after some seconds, to the actual login
prompt. Bug appeared after upgrading from stretch a few months ago.
Some more infos after living with this bug for a year:
- The bug can be instantly triggered with xdg-screensaver lock
- One new workaround seems to be to use a backport kernel (atm thats
linux-image-5.4.0-0.bpo.2-amd64)
- The workaround with Ctrl-Alt-F7/F8 worked for me usually.
- You can also blindly type your password, and the screen will be back
after unlocking
- Be aware, if you're too fast after screen lock, the screen might
unlock without password prompt and without screen being back on. That
way I corrupted a password by typing it blindly into a messenger. ^^'
- If the screen is locked quite long (like >30min), screen may wake up
by mouse move again.
I'm now testing the backports kernel. First test looking good, I'll
report if I notice anything new.
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