Additional information:
premise:
p1) I made a test changing the owner and group of the /tmp/at-spi2/ folder with the user logged-in solve the problem. Maybe it was granted, but it tried anyway
p2) Evince seem to work fine, I never detected problems reading pdf file during normal work. This error does not seem to affect the entire program operation.
Based on of my knowledge I have tried to verify the requirements requested by Jamie Strandboge:
a1) the environment and /tmp/at-spi2/:
considering what I have discovered a way to change the environment connected to the '/tmp/at-spi2/' is to define XDG_RUNTIME_DIR, but this variable is not defined, the command env|grep XDG produce:
XDG_SESSION_COOKIE=023e99a7ae9aa1d1d49fde2300000008-1393614529.236409-511883369
XDG_CONFIG_DIRS=/etc/xdg/xdg-gnome-shell:/etc/xdg
XDG_DATA_DIRS=/usr/share/gnome-shell:/usr/share/gnome:/usr/local/share/:/usr/share/
XDG_CURRENT_DESKTOP=GNOME
This is certainly not exhaustive but that's what I was able to discover about this
a2) why is evince trying to chmod it?
I don't know the internal reasons of evince but this operation is always done even when it is launched from the command without opening a pdf file directly. I made an strace of evince launch from commnad line, a simple evince, and these are the interesting lines:
...
recvmsg(11, 0x7fff3dbbb490, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable)
eventfd2(0, O_NONBLOCK|O_CLOEXEC) = 12
write(12, "\1\0\0\0\0\0\0\0", 8) = 8
fstat(11, {st_mode=S_IFSOCK|0777, st_size=0, ...}) = 0
fcntl(11, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
write(4, "\1\0\0\0\0\0\0\0", 8) = 8
brk(0x7f6836ff0000) = 0x7f6836ff0000
brk(0x7f6836fef000) = 0x7f6836fef000
sendmsg(11, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\1\1Y\0\0\0\2\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 144}, {"T\0\0\0type='signal', interface='or"..., 89}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 233
sendmsg(11, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\1\1d\0\0\0\3\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 144}, {"_\0\0\0type='signal', interface='or"..., 100}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 244
sendmsg(11, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\0\0010\0\0\0\4\0\0\0\202\0\0\0\1\1o\0\37\0\0\0/org/a11"..., 152}, {"\5\0\0\0:1.38\0\0\0\37\0\0\0/org/a11y/atspi/"..., 48}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 200
* mkdir("/tmp/at-spi2/", 01777) = -1 EEXIST (File exists)
* chmod("/tmp/at-spi2/", 01777) = -1 EACCES (Permission denied)
socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC, 0) = 13
* stat("/tmp/at-spi2/socket-4587-1804289383", 0x7fff3dbbb550) = -1 ENOENT (No such file or directory)
setsockopt(13, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
* bind(13, {sa_family=AF_FILE, path="/tmp/at-spi2/socket-4587-1804289383"}, 37) = 0
listen(13, 30) = 0
fcntl(13, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(13, F_SETFL, O_RDWR|O_NONBLOCK) = 0
* chmod("/tmp/at-spi2/socket-4587-1804289383", 0777) = 0
open("/dev/urandom", O_RDONLY) = 14
read(14, "\320\262\323\266\243\246\206\214\331G\v\330", 12) = 12
close(14) = 0
fstat(13, {st_mode=S_IFSOCK|0777, st_size=0, ...}) = 0
fcntl(13, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
write(4, "\1\0\0\0\0\0\0\0", 8) = 8
openat(AT_FDCWD, "/usr/lib/evince/4/backends", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 14
getdents(14, /* 14 entries */, 32768) = 584
open("/usr/lib/evince/4/backends/dvidocument.evince-backend", O_RDONLY) = 15
...
only five lines marked with '*' contain a reference to /tmp/at-spi2 folder
That's all for now.
No one else who follows this bug has been dealing with a similar problem?
Additional information:
premise:
p1) I made a test changing the owner and group of the /tmp/at-spi2/ folder with the user logged-in solve the problem. Maybe it was granted, but it tried anyway
p2) Evince seem to work fine, I never detected problems reading pdf file during normal work. This error does not seem to affect the entire program operation.
Based on of my knowledge I have tried to verify the requirements requested by Jamie Strandboge: COOKIE= 023e99a7ae9aa1d 1d49fde23000000 08-1393614529. 236409- 511883369 DIRS=/etc/ xdg/xdg- gnome-shell: /etc/xdg DIRS=/usr/ share/gnome- shell:/ usr/share/ gnome:/ usr/local/ share/: /usr/share/ DESKTOP= GNOME
a1) the environment and /tmp/at-spi2/:
considering what I have discovered a way to change the environment connected to the '/tmp/at-spi2/' is to define XDG_RUNTIME_DIR, but this variable is not defined, the command env|grep XDG produce:
XDG_SESSION_
XDG_CONFIG_
XDG_DATA_
XDG_CURRENT_
This is certainly not exhaustive but that's what I was able to discover about this
a2) why is evince trying to chmod it? O_CLOEXEC) = 12 S_IFSOCK| 0777, st_size=0, ...}) = 0 f0000) = 0x7f6836ff0000 ef000) = 0x7f6836fef000 2)=[{"l\ 1\1\1Y\ 0\0\0\2\ 0\0\0\177\ 0\0\0\1\ 1o\0\25\ 0\0\0/org/ fre"... , 144}, {"T\0\0\ 0type=' signal' , interface='or"..., 89}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 233 2)=[{"l\ 1\1\1d\ 0\0\0\3\ 0\0\0\177\ 0\0\0\1\ 1o\0\25\ 0\0\0/org/ fre"... , 144}, {"_\0\0\ 0type=' signal' , interface='or"..., 100}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 244 2)=[{"l\ 1\0\0010\ 0\0\0\4\ 0\0\0\202\ 0\0\0\1\ 1o\0\37\ 0\0\0/org/ a11"... , 152}, {"\5\0\ 0\0:1.38\ 0\0\0\37\ 0\0\0/org/ a11y/atspi/ "..., 48}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 200 /tmp/at- spi2/", 01777) = -1 EEXIST (File exists) /tmp/at- spi2/", 01777) = -1 EACCES (Permission denied) SOCK_CLOEXEC, 0) = 13 tmp/at- spi2/socket- 4587-1804289383 ", 0x7fff3dbbb550) = -1 ENOENT (No such file or directory) tmp/at- spi2/socket- 4587-1804289383 "}, 37) = 0 /tmp/at- spi2/socket- 4587-1804289383 ", 0777) = 0 "/dev/urandom" , O_RDONLY) = 14 323\266\ 243\246\ 206\214\ 331G\v\ 330", 12) = 12 S_IFSOCK| 0777, st_size=0, ...}) = 0 evince/ 4/backends" , O_RDONLY| O_NONBLOCK| O_DIRECTORY| O_CLOEXEC) = 14 "/usr/lib/ evince/ 4/backends/ dvidocument. evince- backend" , O_RDONLY) = 15
I don't know the internal reasons of evince but this operation is always done even when it is launched from the command without opening a pdf file directly. I made an strace of evince launch from commnad line, a simple evince, and these are the interesting lines:
...
recvmsg(11, 0x7fff3dbbb490, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable)
eventfd2(0, O_NONBLOCK|
write(12, "\1\0\0\0\0\0\0\0", 8) = 8
fstat(11, {st_mode=
fcntl(11, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
write(4, "\1\0\0\0\0\0\0\0", 8) = 8
brk(0x7f6836f
brk(0x7f6836f
sendmsg(11, {msg_name(0)=NULL, msg_iov(
sendmsg(11, {msg_name(0)=NULL, msg_iov(
sendmsg(11, {msg_name(0)=NULL, msg_iov(
* mkdir("
* chmod("
socket(PF_FILE, SOCK_STREAM|
* stat("/
setsockopt(13, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
* bind(13, {sa_family=AF_FILE, path="/
listen(13, 30) = 0
fcntl(13, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(13, F_SETFL, O_RDWR|O_NONBLOCK) = 0
* chmod("
open(
read(14, "\320\262\
close(14) = 0
fstat(13, {st_mode=
fcntl(13, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
write(4, "\1\0\0\0\0\0\0\0", 8) = 8
openat(AT_FDCWD, "/usr/lib/
getdents(14, /* 14 entries */, 32768) = 584
open(
...
only five lines marked with '*' contain a reference to /tmp/at-spi2 folder
That's all for now.
No one else who follows this bug has been dealing with a similar problem?
Many thanks to all !!!