MATE Multi Monitor Setup

[koin]

Hello,
I tried Mint with MATE for my work machine and I really like it, but there are a few things I'd like to optimize.

Setup: Lenovo T440p with Intel HD GPU (Not the Optimus version), newest Linux Mint MATE from HP.

Problems:

1. When I Boot with external Monitor conntected to the DP Port, Screens remain black.
   I'll have to login without seeing anything and then unplug and replug to make things work.
2. If I lock the screen it turns black with backlight still on, Id like to see the login form or a clock if possible while locked
3. keyboard backlight is on at startup automatically, I found a command to turn them off, but I can't run It as a Startup command, since it requires root

   Code: Select all

   echo 0 | sudo tee /sys/class/leds/xxx\:\:kbd_backlight/brightness
   

4. If I connect 2 external Displays and make a panel for them, unplug them to work on my notebook screen, it looks like a old browser with ask/google/yahoo toolbars installed, instead of 1 toolbar the 2 from the external Displays, also show on my single notebook screen, how can I fix this?

Thanks for your help
koin

[MartinX3]

Same problem at my side with Linux Mint 18.3 and Ubuntu Mate 17.10.

I have a T440P laptop (intel HD) and a Aspire E1-571G laptop (Intel HD).

I work in the company with 2 monitors connected to the laptop.
I shut down completely, disconnect the laptop and go home.
There I have also 2 Monitors to connect with different resolutions.
The login screen is fine,
but on the desktop the panels are messed up or
the desktop icons are at a single place and stacked over each other or
the monitor is rainbows up, which means that 2 screens are stacked which results in black unsuable fields on my screens and other weird, corrupt and buggy stuff.