execve("/usr/lib/systemd/systemd-backlight", ["/usr/lib/systemd/systemd-backlig"..., "load", "backlight:acpi_video0"], [/* 19 vars */]) = 0
brk(0)                                  = 0x7f48ebdca000
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=228812, ...}) = 0
mmap(NULL, 228812, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f48ea9f9000
close(3)                                = 0
open("/usr/lib/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300`\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=138242, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f48ea9f8000
mmap(NULL, 2208912, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f48ea5f4000
mprotect(0x7f48ea60b000, 2093056, PROT_NONE) = 0
mmap(0x7f48ea80a000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16000) = 0x7f48ea80a000
mmap(0x7f48ea80c000, 13456, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f48ea80c000
close(3)                                = 0
open("/usr/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\1\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1984416, ...}) = 0
mmap(NULL, 3813200, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f48ea251000
mprotect(0x7f48ea3ea000, 2097152, PROT_NONE) = 0
mmap(0x7f48ea5ea000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x199000) = 0x7f48ea5ea000
mmap(0x7f48ea5f0000, 16208, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f48ea5f0000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f48ea9f7000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f48ea9f5000
arch_prctl(ARCH_SET_FS, 0x7f48ea9f5740) = 0
mprotect(0x7f48ea5ea000, 16384, PROT_READ) = 0
mprotect(0x7f48ea80a000, 4096, PROT_READ) = 0
mprotect(0x7f48eaa41000, 4096, PROT_READ) = 0
mprotect(0x7f48eaa31000, 4096, PROT_READ) = 0
munmap(0x7f48ea9f9000, 228812)          = 0
set_tid_address(0x7f48ea9f5a10)         = 24269
set_robust_list(0x7f48ea9f5a20, 24)     = 0
rt_sigaction(SIGRTMIN, {0x7f48ea5f9b90, [], SA_RESTORER|SA_SIGINFO, 0x7f48ea604210}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x7f48ea5f9c20, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f48ea604210}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
access("/proc/vz", F_OK)                = -1 ENOENT (No such file or directory)
brk(0)                                  = 0x7f48ebdca000
brk(0x7f48ebdeb000)                     = 0x7f48ebdeb000
open("/run/systemd/container", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/proc/1/environ", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0400, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f48eaa30000
read(3, "TERM=linux\0", 1024)           = 11
read(3, "", 1024)                       = 0
close(3)                                = 0
munmap(0x7f48eaa30000, 4096)            = 0
open("/proc/cmdline", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f48eaa30000
read(3, "BOOT_IMAGE=/boot/vmlinuz-linux r"..., 1024) = 98
close(3)                                = 0
munmap(0x7f48eaa30000, 4096)            = 0
access("/etc/initrd-release", F_OK)     = -1 ENOENT (No such file or directory)
ioctl(2, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, 0x7fff3de23ea0) = -1 ENOTTY (Inappropriate ioctl for device)
socket(PF_LOCAL, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 3
getsockopt(3, SOL_SOCKET, SO_SNDBUF, [212992], [4]) = 0
setsockopt(3, SOL_SOCKET, 0x20 /* SO_??? */, [8388608], 4) = 0
setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\n\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16) = 0
connect(3, {sa_family=AF_LOCAL, sun_path="/run/systemd/journal/socket"}, 29) = 0
umask(022)                              = 022
stat("/var/lib/systemd", {st_mode=S_IFDIR|0755, st_size=94, ...}) = 0
mkdir("/var/lib/systemd/backlight", 0755) = -1 EEXIST (File exists)
stat("/var/lib/systemd/backlight", {st_mode=S_IFDIR|0755, st_size=240, ...}) = 0
open("/etc/udev/udev.conf", O_RDONLY|O_CLOEXEC) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=49, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f48eaa30000
read(4, "# see udev.conf(5) for details\n\n"..., 4096) = 49
read(4, "", 4096)                       = 0
close(4)                                = 0
munmap(0x7f48eaa30000, 4096)            = 0
stat("/sys/subsystem/backlight/devices/acpi_video0", 0x7fff3de23860) = -1 ENOENT (No such file or directory)
stat("/sys/bus/backlight/devices/acpi_video0", 0x7fff3de23860) = -1 ENOENT (No such file or directory)
stat("/sys/class/backlight/acpi_video0", 0x7fff3de23860) = -1 ENOENT (No such file or directory)
sendmsg(3, {msg_name(0)=NULL, msg_iov(4)=[{"PRIORITY=3\nSYSLOG_FACILITY=3\nCOD"..., 142}, {"MESSAGE=", 8}, {"Failed to get backlight or LED d"..., 88}, {"\n", 1}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 239
exit_group(1)                           = ?
+++ exited with 1 +++