View Full Version : Ubuntu 18.04 install black screen

August 22nd, 2018, 05:00 PM
Hi, Im having trouble getting Ubuntu install on my system. I am using an ati Radeon 5870 with 6 displayports. I have it connected via one of the displayports. When I tried to install via the usb, I get a black screen when I select either try Ubuntu or install. The monitor says out of sync, incorrect timing. My monitor is a dell u2718q. I can get it to install with options ro nomodeset vga=791. Once installed, I get the same black screen, monitor out of sync, incorrect timing. Also, I cant see the grub menu, try pressing shift, etc. the display says no signal. Any help?

August 22nd, 2018, 07:08 PM
In Windows 10, everything works fine. I also try other distro, such as Debian, elementary os, same error

August 24th, 2018, 01:00 AM
Nobody knows why? I get the same error on every distro.

August 24th, 2018, 01:01 AM
Does the open source driver support my card? Radeon hd 5870 eyefinity 6