+ uname -a
DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
+ ./sim
ysize=1 xsize=80 (latent)    vtb_size=80      final=1922      max=8666      min=6         ESCAPED (OOB writes)
ysize=1 xsize=80 corner      vtb_size=80      final=10086     max=14199     min=0         ESCAPED (OOB writes)
80x25 cursor mid             vtb_size=2000    final=1618      max=1998      min=0         in-bounds
80x25 corner 0,0             vtb_size=2000    final=1606      max=1998      min=0         in-bounds
80x25 corner 79,24           vtb_size=2000    final=1481      max=1999      min=1         in-bounds
132x60 cursor mid            vtb_size=7920    final=6910      max=7919      min=0         in-bounds
+ kldstat -v
+ grep -i snake
+ true
+ kldload /boot/kernel/snake_saver.ko
+ kldstat
+ grep snake
 4    1 0xffffffff82600000     c000 snake_saver.ko
+ ./snake_probe
[*] waiting 3s for snake to draw...
[*] sample1: 368 non-blank attr-0x07 cells
[*] sample2: 368 non-blank attr-0x07 cells
[-] VRAM static -- snake not running?
[*] issuing CONS_SET(M_VGA_C80x30) while blanked...
[*] CONS_SET -> rc=0 errno=0 after 0.012s
[+] GUARD: mode change completed cleanly (saver was stopped/restarted by sc_clean_up)
[*] restore CONS_SET(80x25) -> rc=0
[*] post-reblank sample: 0 attr-0x07 cells (fresh snake re-init expected)
[*] cleanup done; guest still alive: yes
RC=0
+ echo 'RC=0'
+ kldunload snake_saver
RUN_DONE
+ echo RUN_DONE