Black screen after reboot when switching to intel

[GReimche]

Hi, I'm running Manjaro kde 20.1 Kernel 5.7, nvidia GF310M
I followed you instructions and after reboot nvidia driver works fine. But after sudo set-intel.sh and reboot I got a black screen before login, I enter tty and switch to nvidia and reboot normal. I believe its something related to the integrated graphics drivers, before installation I had MESA DRI installed (I don't know the driver name related, I thing it should be the modesetting), and following your scripts it installed the xf86-video-intel gitreplacing my default. I try hard to replace the code following you instructions on reddit with no success. I had to remove optimus-swich-sddm, and I'm will reinstall Opt Switch.
Would you be kind showing the steps and were do edit before install optimus-switch-sddm, so that I can use the MESA DRI driver in intel mode, without needing to install xf86-video-intel git? Thank you in advance.