<div dir="ltr"><div>I solve the error. Thank you for question about output of vaapi. There are no permissions for /dev/dri/*. sonntex@work ~ $ vainfo error: failed to initialize display Aborted sonntex@work ~ $ strace vainfo execve("/usr/bin/vainfo", ["vainfo"], [/* 28 vars */]) = 0 brk(0) = 0x12d9000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb2aa417000 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=42981, ...}) = 0 mmap(NULL, 42981, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fb2aa40c000 close(3) = 0 open("/usr/lib64/libva.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0(\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=113040, ...}) = 0 mmap(NULL, 2210496, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb2a9fdb000 mprotect(0x7fb2a9ff6000, 2093056, PROT_NONE) = 0 mmap(0x7fb2aa1f5000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1a000) = 0x7fb2aa1f5000 close(3) = 0 open("/usr/lib64/libva-drm.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\n\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=10168, ...}) = 0 mmap(NULL, 2105512, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb2a9dd8000 mprotect(0x7fb2a9dda000, 2093056, PROT_NONE) = 0 mmap(0x7fb2a9fd9000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7fb2a9fd9000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb2aa40b000 open("/lib64/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@\7\2\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1681152, ...}) = 0 mmap(NULL, 3788376, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb2a9a3b000 mprotect(0x7fb2a9bce000, 2097152, PROT_NONE) = 0 mmap(0x7fb2a9dce000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x193000) = 0x7fb2a9dce000 mmap(0x7fb2a9dd4000, 15960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fb2a9dd4000 close(3) = 0 open("/lib64/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\16\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=14344, ...}) = 0 mmap(NULL, 2109712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb2a9837000 mprotect(0x7fb2a9839000, 2097152, PROT_NONE) = 0 mmap(0x7fb2a9a39000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fb2a9a39000 close(3) = 0 open("/usr/lib64/libdrm.so.2", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340=\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=59776, ...}) = 0 mmap(NULL, 2157840, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb2a9628000 mprotect(0x7fb2a9636000, 2093056, PROT_NONE) = 0 mmap(0x7fb2a9835000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xd000) = 0x7fb2a9835000 close(3) = 0 open("/lib64/libm.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 U\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1038448, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb2aa40a000 mmap(NULL, 3133784, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb2a932a000 mprotect(0x7fb2a9427000, 2093056, PROT_NONE) = 0 mmap(0x7fb2a9626000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xfc000) = 0x7fb2a9626000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb2aa409000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb2aa408000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb2aa407000 arch_prctl(ARCH_SET_FS, 0x7fb2aa408700) = 0 mprotect(0x7fb2a9dce000, 16384, PROT_READ) = 0 mprotect(0x7fb2a9626000, 4096, PROT_READ) = 0 mprotect(0x7fb2a9835000, 4096, PROT_READ) = 0 mprotect(0x7fb2a9a39000, 4096, PROT_READ) = 0 mprotect(0x7fb2a9fd9000, 4096, PROT_READ) = 0 mprotect(0x7fb2aa1f5000, 4096, PROT_READ) = 0 mprotect(0x601000, 4096, PROT_READ) = 0 mprotect(0x7fb2aa418000, 4096, PROT_READ) = 0 munmap(0x7fb2aa40c000, 42981) = 0 open("/dev/dri/renderD128", O_RDWR) = -1 EACCES (Permission denied) open("/dev/dri/card0", O_RDWR) = -1 EACCES (Permission denied) write(2, "error: failed to initialize disp"..., 35error: failed to initialize display) = 35 write(2, "\n", 1 ) = 1 rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0 gettid() = 5142 tgkill(5152, 5152, SIGABRT) = 0 --- SIGABRT {si_signo=SIGABRT, si_code=SI_TKILL, si_pid=5152, si_uid=1000} --- +++ killed by SIGABRT +++ Aborted sonntex@work ~ $ ls -l /dev/dri total 0 crw-rw---- 1 root video 226, 0 Apr 19 20:20 card0 crw-rw---- 1 root video 226, 64 Apr 19 20:20 controlD64 crw-rw---- 1 root video 226, 128 Apr 19 20:20 renderD128 </div>So, if I run gstreamer under sudo or root, all work fine. </div>