I installed Zorin Pro 17.2 on my MacBook Pro 2015 w/ extra AMD Radeon R9 M370X discrete graphics card, which goes fine, IF I use the DO NOT INSTALL 3RD PARTY SOFTWARE (ie. graphics hardware).
If I DO use the 3rd party install, the installation seems to be working, the system restarts and it reboots to a WHITE SCREEN.
That's it...
Anyone having an idea what I could do to fix this?
Welcome to the forum!
For a bit of clarification, what do you mean when you say 3rd party install? Perhaps a screenshot might help as well to clarify what this means. If this is in regards to using AMDs pro drivers, I would recommend against using them and just using the default open source ones (as they are often times better anyway). There may be a rare case where those pro drivers are required, but nowadays those reasons are less and less.
Does your screen look like this one?
There the solution is suggested to add
intel_iommu=igfx_off
to etc/default/grub.
Welcome to the Forum!
Maybe there is some Installation or Update of one or several Packages during the Installation Process which may have an Issue in this Form. But You can install the System first without it and update and/or install it after the Installation in the ''Additional Drivers'' Tab in Software & Updates. So, when the Installation works without it, I would suggest to install it without it.
Hi there! Thanks for your response. That option is a standard option on the Zorin installation screen. It's checked by default.
In the mean time, I'm a step further down the path and found out that if I change the GRUB and add the linux startup option "nomodeset", the system starts up properly.
Later, I found something on AskUbuntu, which supports my actions:
The newest kernels have moved the video mode setting into the kernel. So all the programming of the hardware specific clock rates and registers on the video card happen in the kernel rather than in the X driver when the X server starts.. This makes it possible to have high resolution nice looking splash (boot) screens and flicker free transitions from boot splash to login screen. Unfortunately, on some cards this doesnt work properly and you end up with a black screen. Adding the nomodeset parameter instructs the kernel to not load video drivers and use BIOS modes instead until X is loaded.
Thanks for your reply. I went to askubuntu and indeed, this has been discussed there already. For me, adding a simple 'nomodeset' did the trick.
Thanks! What I wrote about unchecking that 3rd party drivers installation, happens to have been purely coincidental. Adding 'nomodeset' to grub did the trick.
I am not sure but as far as I know, adding nomodeset is not a good solution for permanent use.
It is a workaround, but not a harmful one. It mostly implies that developer-side needs a fix, rather than it leading to breakage.
Wayland requires modesetting, so using nomodeset can prevent the user from using Wayland. It also can result in not utilizing GPU graphics acceleration. So in gaming, it can cause the user to take a performance hit.