title: open("/dev/i2c-1",O_RDWR) return -1, i2c-1 device couldnt open
body: <p>I have a little problem about my app.</p>
  
  <p>Firstly I install package i2c-tools,<br>
  I give all permission to all user for dev/i2c* files.<br>
  After, add the line <code>i2c-dev</code> in <code>etc/modules</code> file<br>
  i2c devices are exist in /dev/ directory. </p>
  
  <p>I guess problem is in my C code: <code>int fd = open("/dev/i2c-1", O_RDWR);</code> returns -1 value and it give <code>errno:2 No such file or directory.</code> </p>
  
  <p>Anyone has a suggestions, whats the problem I couldnt found?<br>
  Below i2cdetect, device and permission output.</p>
  
  <pre><code>root@arge16-HP-600B:/home/arge1-6# i2cdetect -y 1
       0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
  00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
  10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
  20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
  30: -- -- -- -- -- -- -- 37 -- -- -- -- -- -- -- -- 
  40: -- -- -- -- -- -- -- -- -- 49 -- -- -- -- -- -- 
  50: 50 -- -- -- -- -- -- -- -- 59 -- -- -- -- -- -- 
  60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
  70: -- -- -- -- -- -- -- --  
  root@arge16-HP-600B:/home/arge1-6# i2cdetect -l
  i2c-0   i2c         i915 gmbus ssc                      I2C adapter
  i2c-1   i2c         i915 gmbus vga                      I2C adapter
  i2c-2   i2c         i915 gmbus panel                    I2C adapter
  i2c-3   i2c         i915 gmbus dpc                      I2C adapter
  i2c-4   i2c         i915 gmbus dpb                      I2C adapter
  i2c-5   i2c         i915 gmbus dpd                      I2C adapter
  i2c-6   i2c         DPDDC-B                             I2C adapter
  root@arge16-HP-600B:/home/arge1-6# ls -l /dev/i2c*
  crw-rw-rw- 1 root i2c 89, 0 Oct  2 14:36 /dev/i2c-0
  crw-rw-rw- 1 root i2c 89, 1 Oct  2 14:36 /dev/i2c-1
  crw-rw-rw- 1 root i2c 89, 2 Oct  2 14:36 /dev/i2c-2
  crw-rw-rw- 1 root i2c 89, 3 Oct  2 14:36 /dev/i2c-3
  crw-rw-rw- 1 root i2c 89, 4 Oct  2 14:36 /dev/i2c-4
  crw-rw-rw- 1 root i2c 89, 5 Oct  2 14:36 /dev/i2c-5
  crw-rw-rw- 1 root i2c 89, 6 Oct  2 14:36 /dev/i2c-6
  
  root@arge16-HP-600B:/home/arge1-6/Desktop/ekrem/adt/workspaceEkrem/DIP40/IpIntercomDIP40# strace i2cdetect -y 1
  execve("/usr/sbin/i2cdetect", ["i2cdetect", "-y", "1"], [/* 28 vars */]) = 0
  brk(0)                                  = 0xf1a000
  access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
  mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f53bc733000
  access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
  open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
  fstat(3, {st_mode=S_IFREG|0644, st_size=125548, ...}) = 0
  mmap(NULL, 125548, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f53bc714000
  close(3)                                = 0
  access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
  open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0&gt;\0\1\0\0\0\360\36\2\0\0\0\0\0"..., 832) = 832
  fstat(3, {st_mode=S_IFREG|0755, st_size=1853400, ...}) = 0
  mmap(NULL, 3961912, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f53bc14b000
  mprotect(0x7f53bc308000, 2097152, PROT_NONE) = 0
  mmap(0x7f53bc508000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1bd000) = 0x7f53bc508000
  mmap(0x7f53bc50e000, 17464, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f53bc50e000
  close(3)                                = 0
  mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f53bc713000
  mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f53bc711000
  arch_prctl(ARCH_SET_FS, 0x7f53bc711740) = 0
  mprotect(0x7f53bc508000, 16384, PROT_READ) = 0
  mprotect(0x603000, 4096, PROT_READ)     = 0
  mprotect(0x7f53bc735000, 4096, PROT_READ) = 0
  munmap(0x7f53bc714000, 125548)          = 0
  open("/dev/i2c/1", O_RDWR)              = -1 ENOENT (No such file or directory)
  open("/dev/i2c-1", O_RDWR)              = 3
  ioctl(3, 0x705, 0x7fff039b01d8)         = 0
  fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
  mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f53bc732000
  write(1, "     0  1  2  3  4  5  6  7  8  "..., 52     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
  ) = 52
  write(1, "00: ", 400: )                     = 4
  write(1, "   ", 3   )                      = 3
  write(1, "   ", 3   )                      = 3
  write(1, "   ", 3   )                      = 3
  ioctl(3, 0x703, 0x3)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x4)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x5)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x6)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x7)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x8)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x9)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0xa)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0xb)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0xc)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0xd)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0xe)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0xf)                    = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- \n", 4-- 
  )                    = 4
  write(1, "10: ", 410: )                     = 4
  ioctl(3, 0x703, 0x10)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x11)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x12)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x13)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x14)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x15)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x16)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x17)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x18)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x19)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x1a)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x1b)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x1c)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x1d)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x1e)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x1f)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- \n", 4-- 
  )                    = 4
  write(1, "20: ", 420: )                     = 4
  ioctl(3, 0x703, 0x20)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x21)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x22)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x23)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x24)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x25)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x26)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x27)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x28)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x29)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x2a)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x2b)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x2c)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x2d)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x2e)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x2f)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- \n", 4-- 
  )                    = 4
  write(1, "30: ", 430: )                     = 4
  ioctl(3, 0x703, 0x30)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x31)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x32)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x33)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x34)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x35)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x36)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x37)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = 0
  write(1, "37 ", 337 )                      = 3
  ioctl(3, 0x703, 0x38)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x39)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x3a)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x3b)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x3c)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x3d)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x3e)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x3f)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- \n", 4-- 
  )                    = 4
  write(1, "40: ", 440: )                     = 4
  ioctl(3, 0x703, 0x40)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x41)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x42)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x43)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x44)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x45)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x46)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x47)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x48)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x49)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = 0
  write(1, "49 ", 349 )                      = 3
  ioctl(3, 0x703, 0x4a)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x4b)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x4c)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x4d)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x4e)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x4f)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- \n", 4-- 
  )                    = 4
  write(1, "50: ", 450: )                     = 4
  ioctl(3, 0x703, 0x50)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = 0
  write(1, "50 ", 350 )                      = 3
  ioctl(3, 0x703, 0x51)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x52)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x53)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x54)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x55)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x56)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x57)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x58)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x59)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = 0
  write(1, "59 ", 359 )                      = 3
  ioctl(3, 0x703, 0x5a)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x5b)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x5c)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x5d)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x5e)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x5f)                   = 0
  ioctl(3, 0x720, 0x7fff039b00f0)         = -1 ENXIO (No such device or address)
  write(1, "-- \n", 4-- 
  )                    = 4
  write(1, "60: ", 460: )                     = 4
  ioctl(3, 0x703, 0x60)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x61)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x62)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x63)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x64)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x65)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x66)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x67)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x68)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x69)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x6a)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x6b)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x6c)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x6d)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x6e)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x6f)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- \n", 4-- 
  )                    = 4
  write(1, "70: ", 470: )                     = 4
  ioctl(3, 0x703, 0x70)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x71)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x72)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x73)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x74)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x75)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x76)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  ioctl(3, 0x703, 0x77)                   = 0
  ioctl(3, 0x720, 0x7fff039b0120)         = -1 ENXIO (No such device or address)
  write(1, "-- ", 3-- )                      = 3
  write(1, "   ", 3   )                      = 3
  write(1, "   ", 3   )                      = 3
  write(1, "   ", 3   )                      = 3
  write(1, "   ", 3   )                      = 3
  write(1, "   ", 3   )                      = 3
  write(1, "   ", 3   )                      = 3
  write(1, "   ", 3   )                      = 3
  write(1, "   \n", 4   
  )                    = 4
  close(3)                                = 0
  exit_group(0)                           = ?
  +++ exited with 0 +++
  </code></pre>