I just got a new Gigabyte Brix machine (https://www.gigabyte.com/Mini-PcBarebone/GB-BKi5A-7200-rev-10#ov). It has an Intel HD 620 graphics chip.
I've been trying to install Linux on it but no luck. I'm unable to get X working.
I've tried Ubuntu (16.04LTS, 17.04 and 17.10) as well as lubuntu (same versions) and I've also tried the latest Fedora desktop. All of them behave the same, blank screen (no signal, the monitor goes into powersaving mode) after booting into them. I get the grub menu but if I let it pass to boot up the graphical installer the screen goes blank. I've tried this on three different monitors, two 4k monitors and one QHD (2560x1440). None of these combinations work out of the box.
I managed to get past this and into the graphical installer by modifying the boot parameters, adding
nomodeset, in the grub menu. This booted up the graphical user interface in 800x600 resolution. I managed to install the system that way but as soon as I booted into it I got the same problem, blank screen after the grub menu. I again got into it in low res with
nomodeset and (on Ubuntu 17.04) installed the Intel Graphics Update Tool (https://01.org/linuxgraphics/downloads/intel-graphics-update-tool-linux-os-v2.0.6). I updated the driver using this tool and rebooted but still no luck.
I'm running out of ideas here and I'm sad to say that I might end up installing Windows on this thing. I'd really like to avoid that so I'm hoping someone here can give me some idea of what more to try.
I've googled and found some similar questions but none of them seems to have a valid answer.
Update: here's a gist containing various log file and command outputs that may be relevant: https://gist.github.com/StFS/603a665a835967121a39da830ad55675