xfdesktop crashes on bootup

[Jim Gifford]

On boot-up desktop flashes on then I get a gray screen. No commands on the desktop can be seen since the entire desktop is gray except for the top bar. When you click on the App Launcher additional errors show up in dmesg.

Upon startup xfdesktop shows these errors in dmesg.

[ 507.576863] xfdesktop[4817]: segfault at 0 ip 00007fc360eb7208 sp 00007fff73620aa0 error 4 in libglib-2.0.so.0.3200.3[7fc360e46000+f2000]
[ 508.500681] xfdesktop[4822]: segfault at 0 ip 00007f64bb8a5208 sp 00007fffe608ba20 error 4 in libglib-2.0.so.0.3200.3[7f64bb834000+f2000]
[ 509.422549] xfdesktop[4827]: segfault at 0 ip 00007fef9d60d208 sp 00007fff98661300 error 4 in libglib-2.0.so.0.3200.3[7fef9d59c000+f2000]
[ 510.348673] xfdesktop[4832]: segfault at 0 ip 00007f4adaf1a208 sp 00007fff94b86e10 error 4 in libglib-2.0.so.0.3200.3[7f4adaea9000+f2000]
[ 511.279221] xfdesktop[4837]: segfault at 0 ip 00007f6afa2a6208 sp 00007fff68dce090 error 4 in libglib-2.0.so.0.3200.3[7f6afa235000+f2000]

Additional dmesg error when clicking on app launcher
[ 1287.719337] xfce4-panel[2232]: segfault at 0 ip 00007f83e69da208 sp 00007fff74612b60 error 4 in libglib-2.0.so.0.3200.3[7f83e6969000+f2000]

More Details

game@GAME:~$ lsb_release -rd
Description: Ubuntu 12.04.1 LTS
Release: 12.04

game@GAME:~$ sudo apt-cache policy xubuntu-desktop
xubuntu-desktop:
  Installed: 2.152
  Candidate: 2.152
  Version table:
 *** 2.152 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages
        100 /var/lib/dpkg/status

Backtrace infor

Reading symbols from /usr/bin/xfdesktop...(no debugging symbols found)...done.
(gdb) handle SIG33 pass nostop nprint
Signal Stop Print Pass to program Description
SIG33 No No Yes Real-time event 33
(gdb) set pagiation 0
(gdb) run
Starting program: /usr/bin/xfdesktop
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
xfdesktop[4798]: starting up
[New Thread 0x7fffed855700 (LWP 4805)]

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff48fc208 in g_utf8_validate () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) backtrace full
#0 0x00007ffff48fc208 in g_utf8_validate () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#1 0x00007ffff70248a1 in garcon_menu_directory_set_name () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
No symbol table info available.
#2 0x00007ffff4b96924 in g_object_newv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#3 0x00007ffff4b96ec6 in g_object_new_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#4 0x00007ffff4b971d4 in g_object_new () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#5 0x00007ffff70246b4 in garcon_menu_directory_new () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
No symbol table info available.
#6 0x00007ffff70269b1 in ?? () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
No symbol table info available.
#7 0x00007ffff7026a2f in ?? () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
No symbol table info available.
#8 0x00007ffff702907d in garcon_menu_load () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
No symbol table info available.
#9 0x000055555556e8d8 in ?? ()
No symbol table info available.
#10 0x000055555556e98e in ?? ()
No symbol table info available.
#11 0x00007ffff48d2d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#12 0x00007ffff48d30a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#13 0x00007ffff48d349a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#14 0x00007ffff62b32f7 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
No symbol table info available.
#15 0x00005555555673cd in main ()
No symbol table info available.
(gdb) info registers
rax 0x5555557e0f80 93824994905984
rbx 0x5555558e3120 93824995963168
rcx 0x1 1
rdx 0x0 0
rsi 0xffffffffffffffff -1
rdi 0x0 0
rbp 0x0 0x0
rsp 0x7fffffffd6a0 0x7fffffffd6a0
r8 0x5555557e0f80 93824994905984
r9 0x5555557e0f80 93824994905984
r10 0x10 16
r11 0x54 84
r12 0x55555583f7e0 93824995293152
r13 0x55555593f318 93824996340504
r14 0x555555938d50 93824996314448
r15 0x2 2
rip 0x7ffff48fc208 0x7ffff48fc208 <g_utf8_validate+488>
eflags 0x10286 [ PF SF IF RF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
(gdb) x/161 $pc
0x7ffff48fc208 <g_utf8_validate+488>: 129371972 1173915976 511033476 -88087
0x7ffff48fc218 <g_utf8_validate+504>: -2145447937 0 1102450500 1099778049
0x7ffff48fc228 <g_utf8_validate+520>: -1065073407 -24214513 -2075787265 -1240513344
0x7ffff48fc238 <g_utf8_validate+536>: -1047967736 256238201 -1991915082 -528399928
0x7ffff48fc248 <g_utf8_validate+552>: 224 -1057455807 251658240 65412
0x7ffff48fc258 <g_utf8_validate+568>: -913751040 15786369 -108986368 224
0x7ffff48fc268 <g_utf8_validate+584>: 18514959 -1992032256 -119438903 -2130706432
0x7ffff48fc278 <g_utf8_validate+600>: 61689 1032130304 1157627902 21018127
0x7ffff48fc288 <g_utf8_validate+616>: -2118022844 49377 -2134801664 -31030001
0x7ffff48fc298 <g_utf8_validate+632>: -2092826625 -2092890143 -1924644896 -1052704440
0x7ffff48fc2a8 <g_utf8_validate+648>: -1153366303 65536 1153501509 21083663
0x7ffff48fc2b8 <g_utf8_validate+664>: 1103268165 12640897 -2092892160 -2062581566
0x7ffff48fc2c8 <g_utf8_validate+680>: -524 1370885956 -745978878 12641153
0x7ffff48fc2d8 <g_utf8_validate+696>: -1014824960 -578482304 1107296253 1090970049
0x7ffff48fc2e8 <g_utf8_validate+712>: 1094705283 1161814659 -1052653559 155518688
0x7ffff48fc2f8 <g_utf8_validate+728>: -667335216 -37846513 -2126381057 285212664
0x7ffff48fc308 <g_utf8_validate+744>: -1316548864 1174405117 -2126397047 -524063
0x7ffff48fc318 <g_utf8_validate+760>: -108969473 55296 -40205297 -1924792321
0x7ffff48fc328 <g_utf8_validate+776>: -16633720 -108838401 -1987703009 1107296253
0x7ffff48fc338 <g_utf8_validate+792>: -73599 -2126446592 16776952 1971588864
0x7ffff48fc348 <g_utf8_validate+808>: 1224736765 -385695357 -308 4202255
0x7ffff48fc358 <g_utf8_validate+824>: 518095681 -44137457 256180223 1090601142
0x7ffff48fc368 <g_utf8_validate+840>: 12640385 -2092892160 -2062581568 -696
0x7ffff48fc378 <g_utf8_validate+856>: 29459272 -90135 -2145447937 0
0x7ffff48fc388 <g_utf8_validate+872>: 266437441 1103202632 524475 -15079168
0x7ffff48fc398 <g_utf8_validate+888>: 258408447 17439 1526741120 264279055
0x7ffff48fc3a8 <g_utf8_validate+904>: 1220788406 233437321 1728053245 778462822
0x7ffff48fc3b8: 8658703 0 -8273871 1114111
0x7ffff48fc3c8 <g_unichar_validate+8>: -91670921 -134159743 -92143617 55296
0x7ffff48fc3d8 <g_unichar_validate+24>: -1752357260 -64976 1981807235 -18382565
0x7ffff48fc3e8 <g_unichar_validate+40>: 822083839 -16809536 251658495 778485909
0x7ffff48fc3f8 <g_unichar_validate+56>: 8658703 0 1718010867 778462822
0x7ffff48fc408: 8658703 0 -175552427 -74889133
0x7ffff48fc418 <g_utf8_strreverse+8>: 149717832 2029421896 2106411135 -969480191
0x7ffff48fc428 <g_utf8_strreverse+24>: 21561341 -398899003 -1991745933 1032669417
0x7ffff48fc438 <g_utf8_strreverse+40>: 242372 -1872361493 1942501704 330698571
0x7ffff48fc448 <g_utf8_strreverse+56>: 387233295 -222425272 -2064570040 1156150482
0x7ffff48fc458 <g_utf8_strreverse+72>: 838814349 -1240513034 -1048360503 -1240513535
0x7ffff48fc468 <g_utf8_strreverse+88>: -2008796412 -2092420860 961282502 -2081524274
0x7ffff48fc478 <g_utf8_strreverse+104>: 961020394 -759820344 324832584 1723757057
0x7ffff48fc488 <g_utf8_strreverse+120>: 8658703
(gdb) thread apply all backtrace

Thread 2 (Thread 0x7fffed855700 (LWP 4805)):
#0 0x00007ffff4ddb0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1 0x00007ffff490e925 in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007ffff48a91c1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007ffff48f526a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007ffff48f49e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007ffff4dd6e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6 0x00007ffff45bfcbd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffff7fcb980 (LWP 4798)):
#0 0x00007ffff48fc208 in g_utf8_validate () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007ffff70248a1 in garcon_menu_directory_set_name () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
#2 0x00007ffff4b96924 in g_object_newv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#3 0x00007ffff4b96ec6 in g_object_new_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4 0x00007ffff4b971d4 in g_object_new () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5 0x00007ffff70246b4 in garcon_menu_directory_new () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
#6 0x00007ffff70269b1 in ?? () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
#7 0x00007ffff7026a2f in ?? () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
#8 0x00007ffff702907d in garcon_menu_load () from /usr/lib/x86_64-linux-gnu/libgarcon-1.so.0
#9 0x000055555556e8d8 in ?? ()
#10 0x000055555556e98e in ?? ()
#11 0x00007ffff48d2d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ffff48d30a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007ffff48d349a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007ffff62b32f7 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#15 0x00005555555673cd in main ()

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1080139/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Jim Gifford (giffordj)]

Based on information comparing the dependencies of both programs. The most likely cause of this issue is libglib2.0.

Other possible causes could be exo-utils libatk1.0-0 libc6 libcairo2 libdbus-1-3 libdbus-glib-1-2 libexo-1-0
libgarcon-1-0 libgdk-pixbuf2.0-0 libgtk2.0-0 libpango1.0-0 libwnck22 libx11-6 libxext6 libxfce4ui-1-0
libxfce4util4 libxfconf-0-2

Still going through the data.