black screen on wake up for acer 5535
Hello Ubuntu community.
I have an acer aspire 5535. when it goes into suspension and after i try to wake up , it doesn't seem to show signs of life ( black screen)..
I did a search and found many other cases similar to mine, but none of the solutions / workarounds are compatible with my problem
(I tried to kill the xserver, change the screen mode with FN + F4, type the user password and press enter ..but nothing... the problem is that as soon as i press a button to wake up, it seems to read the harddisk for 2 seconds and then it doesn't responds to anything except forced poweroff, pressing power button for 3 secs)