OpenSuSE 13.2 / ACER laptop - system goes to sleep

     I have a ACER laptop for quite some time (2009). Most of the time I use it as a desktop computer: the lid is closed and the image goes to a  external monitor. Of course, I disabled the lid-event in order to prevent the system to go to sleep. I never had any problems with that.

     However, this morning, after applying some updates, the system started to behave differently: it was going to sleep every 20 seconds or so, without any obvious reason. I checked all the settings and everything appeared to be normal. If I opened the lid, it was not going to sleep anymore, but when I closed it back, the same problem returned. Ok, I can stay with the lid open, but I don't like it that way.

     So, I have some possibilities:

          1) the system is too old and it's showing its age

          2) there is a new setting after the update and I cannot found it

          3) there is a bug in the update (either a driver or a setting)

     I don't have an answer, but after google-ing a while I have a solution (or, at least, a workaround): I forced the system to ignore the lid.

1) Open Dolphin a SuperUser (you need root access)

2) Edit the file /etc/systemd/logind.conf

3) Add (or modify if it already exists) the following line: HandleLidSwitch=ignore (also make shure it does not have the # character in front of it; this character marks a line as comment and it will be ignored)

4) Save and reboot