Thanks for the logs. They aren’t debug logs so there’s a limited amount of information, but a couple of things:
15:38:50.980 T:3479171840 ERROR: CCurlFile::Open failed with code 0 for http://download.osmc.tv/kodi/addons/krypton/addons.xml.gz.md5
15:38:50.980 T:3479171840 ERROR: Open - failed to open source <http://download.osmc.tv/kodi/addons/krypton/addons.xml.gz.md5>
15:38:50.980 T:3479171840 ERROR: CRepository: failed read 'http://download.osmc.tv/kodi/addons/krypton/addons.xml.gz.md5'
There seems to be a network issue here preventing Kodi from checking for add-on updates via the Kodi repository.
From your log, during playback there seem to be buffer issues, and also:
18:37:33.041 T:4074721872 NOTICE: VideoPlayer: OnLostDisplay received
I’d try / check your HDMI cable. If you have an AVR, try directly to the display temporarily. Supported by:
[173343.665643] vout_serve: vmode set to null
[173343.665673] vout_serve: disable HDMI PHY as soon as possible
[173343.665681] fb: current vmode=2160p24hz, cmd: 0x50000
[173343.665687] tv_vout: tv_set_current_vmodefps_target_mode=59
[173343.665693] tv_vout: mode is 59,sync_duration_den=1,sync_duration_num=60
[173343.665705] tv_vout: 3Invalid video output modes.
I’d enable HPD Lock under Settings -> Display and reboot. It might help.