DISPLAY=:20** (gdmXnestchooser:18481): WARNING **: Can't exec, trying XnestUnrecognized option: use: X [:<display>] [option]-a # mouse acceleration (pixels)-ac disable access control restrictions-audit int set audit trail level-auth file select authorization file-br create root window with black background+bs enable any backing store support-bs disable any backing store support-c turns off key-clickc # key-click volume (0-100)-cc int default color visual class-co file color database file-core generate core dump on fatal error-dpi int screen resolution in dots per inchdpms enables VESA DPMS monitor control-dpms disables VESA DPMS monitor control-deferglyphs [none|all|16] defer loading of [no|all|16-bit] glyphs-f # bell base (0-100)-fc string cursor font-fn string default font name-fp string default font path-help prints message with these options-I ignore all remaining arguments-ld int limit data space to N Kb-lf int limit number of open files to N-ls int limit stack space to N Kb-nolock disable the locking mechanism-logo enable logo in screen savernologo disable logo in screen saver-nolisten string don't listen on protocol-noreset don't reset after last client exists-reset reset after last client exists-p # screen-saver pattern duration (minutes)-pn accept failure to listen on all ports-nopn reject failure to listen on all ports-r turns off auto-repeatr turns on auto-repeat -render [default|mono|gray|color] set render color alloc policy-s # screen-saver timeout (minutes)-sp file security policy file-su disable any save under support-t # mouse threshold (pixels)-terminate terminate at server reset-to # connection time out-tst disable testing extensionsttyxx server started from init on /dev/ttyxxv video blanking for screen-saver-v screen-saver without video blanking-wm WhenMapped default backing-store-wr create root window with white background-x string loads named extension at init time -maxbigreqsize set maximal bigrequest size +xinerama Enable XINERAMA extension-xinerama Disable XINERAMA extension-dumbSched Disable smart scheduling, enable old behavior-schedInterval int Set scheduler interval in msec+extension name Enable extension-extension name Disable extension-query host-name contact named host for XDMCP-broadcast broadcast for XDMCP-multicast [addr [hops]] IPv6 multicast for XDMCP-indirect host-name contact named host for indirect XDMCP-port port-num UDP port number to send messages to-from local-address specify the local address to connect from-once Terminate server after one session-class display-class specify display class to send in manage-cookie xdm-auth-bits specify the magic cookie for XDMCP-displayID display-id manufacturer display ID for request-kb disable the X Keyboard Extension+kb enable the X Keyboard Extension[+-]accessx [ timeout [ timeout_mask [ feedback [ options_mask] ] ] ] enable/disable accessx key sequences-ardelay set XKB autorepeat delay-arinterval set XKB autorepeat interval-display string display name of the real server-sync sinchronize with the real server-full utilize full regeneration-class string default visual class-depth int default depth-sss use software screen saver-geometry WxH+X+Y window size and position-bw int window border width-name string window name-scrns int number of screens to generate-install instal colormaps directlyFatal server error:Unrecognized option: