Hi, i have the same issue, “unable to initialize libusb: -99” and no /dev/bus/
But it only occurs if trying to boot with usb3.0. If i set usb_port_owner_info=0, usb is fully working (2.0 of course)
I’m running The Grinch with L4T21.1
# ltrace lsusb
__libc_start_main(0x9429, 1, 0xbe4d4854, 0x13195PTRACE_SINGLESTEP: Input/output error
4643 couldn't continue when handling __libc_start_main (0x9270) at 0x9270
# ltrace --library='libusb*' lsusb
lsusb->libusb_init(0xbe0d66d4, 0xb66c8518, 0, 1PTRACE_SINGLESTEP: Input/output error
3170 couldn't continue when handling libusb_init (0x938c) at 0x938c
#strace -olog.txt lsusb
...
openat(AT_FDCWD, "/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/proc/bus/usb", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/dev", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = 3
fcntl64(3, F_GETFD) = 0x1 (flags FD_CLOEXEC)
getdents(3, /* 200 entries */, 32768) = 4120
getdents(3, /* 0 entries */, 32768) = 0
close(3) = 0
write(2, "unable to initialize libusb: -99"..., 33) = 33
exit_group(1) = ?
+++ exited with 1 +++
Seems like lsusb fails, because no usb controller is found http://superuser.com/a/698010