I have been running Kodi in Openelec 6.0.3 with an Intel i3 540/Intel H55 chipset motherboard. It's connected to my AVR by HDMI. I just did a migration to LibreElec 7.0.2 by doing a manual update in the /storage/updates directory. Everything updated fine but when it restarted I lost the video. I connected a second VGA monitor to see what had happened. The video output was still set at HDMI 1080p/24 but I wasn't getting any output (the TV displayed "signal out of range"). I tried 1080p at 30 and 60 but still no picture. I finally brought it down to a lower resolution and it works ok at 1280 x 720p/60. Is this just a bug in LibreElec presently? The 1080p24 was running fine in Openelec.
debug log: RjIQ
GPU: Mesa DRI Intel Ironlake Desktop