These two questions have been encountered many times, and today I finally understand.
1. If an error is an error loading keymap /var/tmp/server-0.xkm COULDN'T load xkb keymap, falling back to pre-xkb keymap Description Hard disk full, no place to write / TMP temporary file, idiot Haha
2. If an error is unable to find a valid framebuff device find / etc / x11 / xf86config-4, there is an option "usefbdev" YES "changed to NO, no FrameBuffer is OK.
