Thank you for the suggestion.
Originally Posted by malekmustaq
I have experienced the same frustration. I have even tried written a script and placed it at /etc/rc.d/rc4.d (or even ini.d/) folders hoping init to catch it before loading the login screen but probably I needed more readings to have it work.
Having no such time I conceded to do it the dirty way by adding the lines into the /etc/profile, a place where slackware habitually goes after login. If your system has none you may try create one /etc/profile and get the luck if it is read after login.
The login screen is a bit ugly but when X loads the resolution is corrected to a pretty one. I did not want to put it ~/ because I wanted other users to enjoy the same resolution after the login.
Hope that helps.
My problem's been solved but I don't know how
I have put xrandr setting in ~/.xprofile and, yes dropped a line in .bash_profile.
It's suddenly started working.
According to general opinions that are available on W3, xrandr should go on .xprofile and let all the users set/customize it accordingly.