On 8/26/20 5:07 AM, Toni Casueps wrote: > None of these issues happened on Debian 9, and they seem related, so I'm > thinking that they may be caused by some single change or > misconfiguration. Graphics drivers seem to be fine, as 2D and 3D > acceleration both work perfectly: > > * When the PC is at sleep state, after waking up, the monitor shows > "no signal", and moving the mouse or pressing keys does not work. > Only Ctrl+Alt+F1 works, it goes to text mode where the monitor gets > signal, and then Ctrl+Alt+F7 works fine and shows the graphical > session. This does not happen with normal boot from shutdown > * Sometimes (very randomly) after correctly logging in and the desktop > shows up, after 1 second or so it goes back to the login screen, I > log in again and then it works fine (the session is not lost in this > case, programs are still there) > * If there is a TV connected to the HDMI port, after waking up from > suspend, the session is lost, it creates a new desktop session with > no programs, and after opening those programs they report they > crashed and prompt the user to try to recover documents or browser tabs > * If the laptop display is turned off so as to only use the external > one, then I shut down or suspend the PC, disconnect the external > display and try to use the laptop somewhere else without an external > monitor, the laptop display is blank for X sessions, only text mode > works. I managed to turn the laptop display on with xrandr, but I > think it should fallback to the internal display when it's the only > one available > > Are these related to Debian, LXDE, Openbox or LightDM? > Thanks > >
Could be related to Bug 870641 light-locker, lightdm: screen stays off after resume https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=870641
