I used to have OOM problems when attaching an external #LG 27UD68p-B monitor to my #Dell #XP15 #linux #laptop, but latest #drm #intel #i915 kernel changes (on drm-tip in git) _seem_ to have fixed this issue!

(this is the 'Direct Rendering Manager' DRM, not the 'Digital Rights/Restrictions Manager' DRM ;) )