Could not initialize graphics output. Exiting

Any of the recent (hrev51*) nightlies. Booting in qemu/kvm, I get
bfs: bfs_stat_index:2177: No such file or directory
Could not initialize graphics output. Exiting.

The qemu command:
qemu-system-x86_64 -machine accel=kvm -cpu host -smp 1 -drive if=ide,media=disk,cache=writeback,serial=1111,file=/kvm/vdisks/haiku5.img,index=0 -drive if=ide,media=cdrom,serial=1133,file=/kvm/isos/haiku-nightly-anyboot.iso,index=2 -drive if=ide,media=cdrom,serial=4444,file=/dev/sr0,index=3 -serial tcp:127.1.5.1:23,server,nowait,nodelay -net nic,vlan=1,macaddr=52:54:00:00:05:01,model=e1000 -net tap,vlan=1,ifname=tapGN0005,script=/etc/network/qemuGREENup,downscript=/etc/network/qemuGREENdown -chardev socket,id=mon_5,port=23,host=127.1.5.2,ipv4,server,nowait,telnet -mon chardev=mon_5 -vnc :5,share=ignore -device usb-ehci -usb -usbdevice tablet -nodefaults -name iso:Haiku5 -boot menu=on -m 2048 -vga std -rtc clock=vm,base=localtime

Older (like 50657) hrevs work OK.

Drat. Can’t upload the serial port log.

Any ideas? Clues?