PS: the setup docs mention mem=1536m to get it to boot, presumably because the kernel isn't properly detecting the memory available to it. When I tried mem=2g, it dumped core. When I tried mem=1920m (2G - 128M) it worked fine. I *think* this matters, because "free -m" reports more memory that way. I can't work out how much RAM the GPU is *expected* to steal. It ships with a "Celeron 2955U", which is listed https://en.wikipedia.org/wiki/Chromebook#Acer_C720 => https://en.wikipedia.org/wiki/Celeron_2955U#.22Haswell-ULT.22_.28SiP.2C_22_n... => https://en.wikipedia.org/wiki/Intel_HD_and_Iris_Graphics#Haswell Which STILL doesn't say. OTOH, I've noticed a weird artefact where sometimes -- especially just after booting? -- the screen's blank areas aren't cleared properly. e.g. doing dmesg then ^L in xterm, the dmesg output is still there except at the very top and bottom. Or unmapping the xterm, and the xterm is still there until I make ratpoison popup a dialog in the corner. I tried running compton as well (with default settings), but that just made the whole display stop responding until I hit ^C. Same behaviour with typing my passphrase blind into ssh-askpass-fullscreen, though ssh-askpass-gnome and ssh-askpass (xlib) worked. WEIRD. *Pretty* sure that all started before I added mem=1920m, too.