[SOLVED] Lxappearance - Segmentation Fault

Sv7n · 2021-03-22 10:00:41

Hello everyone,

I have recently made a switch to arch distro, and am using Awesome WM. I used to be able to change graphical appearance (mouse cursor etc.) via the use of lxappearance. However now I cannot turn it on and when i try to run it via terminal the only message I get is

[1]    24574 segmentation fault (core dumped)  lxappearance

The number itself varies from run to run. I tried to run it as sudo to see if it gives a different behavior and I get

** (lxappearance:24856): WARNING **: 09:58:39.420: lxappearance.c:67: Failed to connect to the session message bus: Using X11 for dbus-daemon autolaunch was disabled at compile time, set your DBUS_SESSION_BUS_ADDRESS instead
[1]    24846 segmentation fault  sudo lxappearance

I tried reinstalling lxappearance via pacman, I've also tried different versions via yay (gtk2 and gtk3) as well as tried to build it from the lxappearance website itself. I am guessing it's something stupid, thank you in advance for your time.

Last edited by Sv7n (2021-03-22 14:27:54)

seth · 2021-03-22 11:55:04

Likely last link in my signature.

Sv7n · 2021-03-22 12:29:54

Thank you for you response! I have .xinitrc file in my home dir it looks like this:

http://ix.io/2TJD

I've understood little from http://wiki.archlinux.org/index.php/Xinit#xinitrc, I'm guessing my monkey brain is to blame. As mentioned in a note one has to include the last if block from /etc/X11/xinit/xinitrc, in my .xinitrc this is the case. Other than that I'm not sure what I am meant to put in there.

Last edited by Sv7n (2021-03-22 12:45:23)

seth · 2021-03-22 12:38:31

That xinitrc has the session relevant bits, but won't start the awesome WM.
If that's not the entire file, please post the entire file.

echo $DBUS_SESSION_BUS_ADDRESS
loginctl session-status

Also please use code tags when posting shell IO or file contents.

Sv7n · 2021-03-22 12:52:17

That was the entire content of .xinitrc. For DBUS_SESSION_BUS_ADDRESS I get

unix:path=/run/user/1000/bus

while for loginctl session-status I get

http://ix.io/2TJE

Thank you for your help.

seth · 2021-03-22 12:55:36

You're getting an active session that you start w/ lightdm (your xinitrc is irrelevant) and DBUS_SESSION_BUS_ADDRESS is fine.
So the warning from lxappearance is bogus. Let's check the actual coredump, "man coredumpctl" & https://wiki.archlinux.org/index.php/Co … _core_dump

Sv7n · 2021-03-22 13:13:56

Oh wow, that makes more sense now. I ran

coredumpctl

list to get PID (5131) and then got the core dump with

coredumpctl info 5131

to get

http://ix.io/2TJN

But from that I understand little to nothing, libglib-2.0 looks a bit dodgy with these "n/a"'s but at this point I am just guessing.

seth · 2021-03-22 13:18:36

The symbol string is just not available in the library, that's "normal".
It crashes when trying to read some ini file, presumingly icon related.

strace

…
…

Sv7n wrote:

sudo lxappearance

Please just don't sudo it…?

manyroads · 2021-03-22 13:18:57

I am having the exact same error... I'll follow along to see what happens. Thanks!

FWIW... here's my coredump (most recent)

coredumpctl info 2801
           PID: 2801 (lxappearance)
           UID: 1000 (mark)
           GID: 1000 (mark)
        Signal: 11 (SEGV)
     Timestamp: Mon 2021-03-22 07:01:12 MDT (15min ago)
  Command Line: lxappearance
    Executable: /usr/bin/lxappearance
 Control Group: /user.slice/user-1000.slice/session-2.scope
          Unit: session-2.scope
         Slice: user-1000.slice
       Session: 2
     Owner UID: 1000 (mark)
       Boot ID: 9534c352a9894694a74bbe323515a613
    Machine ID: 644ee4914af140559c07b0163ffb9a66
      Hostname: ArchLinux
       Storage: /var/lib/systemd/coredump/core.lxappearance.1000.9534c352a9894694a74bbe3235>
       Message: Process 2801 (lxappearance) of user 1000 dumped core.
                
                Stack trace of thread 2801:
                #0  0x00007fddb24d0102 n/a (libglib-2.0.so.0 + 0x4c102)
                #1  0x00007fddb24d0673 n/a (libglib-2.0.so.0 + 0x4c673)
                #2  0x00007fddb24d08e1 n/a (libglib-2.0.so.0 + 0x4c8e1)
                #3  0x00007fddb24d09c6 g_key_file_load_from_file (libglib-2.0.so.0 + 0x4c9c>
                #4  0x00005597c33fc910 load_icon_themes_from_dir (lxappearance + 0x7910)
                #5  0x00005597c33fcc5a icon_theme_init (lxappearance + 0x7c5a)
                #6  0x00005597c33fa337 main (lxappearance + 0x5337)
                #7  0x00007fddb2141b25 __libc_start_main (libc.so.6 + 0x27b25)
                #8  0x00005597c33fa67e _start (lxappearance + 0x567e)
                
                Stack trace of thread 2802:
                #0  0x00007fddb220e37f __poll (libc.so.6 + 0xf437f)
                #1  0x00007fddb252ddef n/a (libglib-2.0.so.0 + 0xa9def)
                #2  0x00007fddb24d56d1 g_main_context_iteration (libglib-2.0.so.0 + 0x516d1)
                #3  0x00007fddb24d5722 n/a (libglib-2.0.so.0 + 0x51722)
                #4  0x00007fddb2506241 n/a (libglib-2.0.so.0 + 0x82241)
                #5  0x00007fddb187d299 start_thread (libpthread.so.0 + 0x9299)
                #6  0x00007fddb2219053 __clone (libc.so.6 + 0xff053)
                
                Stack trace of thread 2806:
           PID: 2801 (lxappearance)
           UID: 1000 (mark)
           GID: 1000 (mark)
        Signal: 11 (SEGV)
     Timestamp: Mon 2021-03-22 07:01:12 MDT (15min ago)
  Command Line: lxappearance
    Executable: /usr/bin/lxappearance
 Control Group: /user.slice/user-1000.slice/session-2.scope
          Unit: session-2.scope
         Slice: user-1000.slice
       Session: 2
     Owner UID: 1000 (mark)
       Boot ID: 9534c352a9894694a74bbe323515a613
    Machine ID: 644ee4914af140559c07b0163ffb9a66
      Hostname: ArchLinux
       Storage: /var/lib/systemd/coredump/core.lxappearance.1000.9534c352a9894694a74bbe3235>
       Message: Process 2801 (lxappearance) of user 1000 dumped core.
                
                Stack trace of thread 2801:
                #0  0x00007fddb24d0102 n/a (libglib-2.0.so.0 + 0x4c102)
                #1  0x00007fddb24d0673 n/a (libglib-2.0.so.0 + 0x4c673)
                #2  0x00007fddb24d08e1 n/a (libglib-2.0.so.0 + 0x4c8e1)
                #3  0x00007fddb24d09c6 g_key_file_load_from_file (libglib-2.0.so.0 + 0x4c9c>
                #4  0x00005597c33fc910 load_icon_themes_from_dir (lxappearance + 0x7910)
                #5  0x00005597c33fcc5a icon_theme_init (lxappearance + 0x7c5a)
                #6  0x00005597c33fa337 main (lxappearance + 0x5337)
                #7  0x00007fddb2141b25 __libc_start_main (libc.so.6 + 0x27b25)
                #8  0x00005597c33fa67e _start (lxappearance + 0x567e)
                
                Stack trace of thread 2802:
                #0  0x00007fddb220e37f __poll (libc.so.6 + 0xf437f)
                #1  0x00007fddb252ddef n/a (libglib-2.0.so.0 + 0xa9def)
                #2  0x00007fddb24d56d1 g_main_context_iteration (libglib-2.0.so.0 + 0x516d1)
                #3  0x00007fddb24d5722 n/a (libglib-2.0.so.0 + 0x51722)
lines 1-34/73 43%

Feell free to ignore this, unless you need a reference re: commonality.

seth · 2021-03-22 13:22:13

'key - let's assume it's not just sudo, it really crashes and the sudo+session error was already a mitigation effort:

strace lxappearance > /tmp/lxappearance.strace 2>&1

and post that file.

https://xkcd.com/149/

Sv7n · 2021-03-22 13:29:53

I thought using sudo on it was not the right way to go, I got desperate and though "hey maybe this is it", it was giving me seg faults before I tried sudo. After running

 strace lxappearance > /tmp/lxappearance.strace 2>&1

i got

http://ix.io/2TJS

I can see

 access("/usr/share/icons", W_OK)        = -1 EACCES (Permission denied)

this looks bad.

seth · 2021-03-22 13:34:29

No, it just checks wether it can write. The crash happens when reading /usr/share/icons/Bibata-Modern-Classic/index.theme, so please upload that file (do NOT copy and paste it from a text editor)

Sv7n · 2021-03-22 13:42:59

I'm guessing by upload u mean

 curl -F 'f:1=<-' ix.io < index.theme

this is what i get

http://ix.io/2TJX

I have a gb keyboard which I set a while ago via

 sudo setxkbmap -layout gb

Last edited by Sv7n (2021-03-22 13:47:52)

seth · 2021-03-22 13:54:14

There's as tray blank in the [ar] line and a weird "sr@Lat"

To pre-check, what if you move away all "/usr/share/icons/Bibata-*" directories (you don't have to delete them, but get them out of /usr/share/icons)

Sv7n · 2021-03-22 14:05:24

I moved all Bibata-* directories to ~/dodgyicons for now. lxappearence still gives seg fault (with coredump), running coredumpctl on that PID gives me

http://ix.io/2TK1

from

 strace lxappearance > /tmp/lxappearance.strace 2>&1

i get

http://ix.io/2TK4

seth · 2021-03-22 14:13:33

Just crashes at the breeze icons, so the bug is probably somehwere before any of this and only causes and overflow here.
I'd start by moving all but hi/locolor icons away. If it starts, re-add your icons gradually.
You can bisect this by re-adding half the themes, if good, re-add haf of the rest, otherwise remove half of the themes you just added to figure which half holds the bad theme (if there's a bad theme)

Sv7n · 2021-03-22 14:22:59

It works, thank you a lot!

I've removed everything then it worked (but no icons obviously), then tried re-adding everything except Bibata-* and breeze* and it worked. I tried to see if its Bibata or breeeze but if I add either it stops working so its both. Thank you for investigating this with me, I've learned a lot !

seth · 2021-03-22 14:26:03

To see whether this is a memory issue, remove something (maybe two or three themes) else and re-add one of the breeze themes.
If it still fails, it's something about the theme, otherwise you encounter a more general memory violation.

In any event, crashing is not a good way to deal with garbage input, so you most certainly want to file a bug against lxde/lxappearance.

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

xircon · 2021-03-22 20:58:22

It is none of the above, it is the glib2 update, downgraded and all is now working.

seth · 2021-03-22 21:28:25

Possible.
Though the commit is 2 months old, https://gitlab.gnome.org/GNOME/glib/-/c … 63c93c7f61 looks like a good contender.
"gboolean" is "gint" is bulls… I mean regular-ass-C int, so the flow relies on an un-initialized integer and the 2.68 build added "-D glib_debug=disabled" which might result in the loss of "implicit" initialization.

Does anyone here have a gnome gitlab account to file a bug?

xircon · 2021-03-22 21:52:04

Nope, I haven't. Another thing I noticed is it affects the right click menu in my browser (vivaldi). The fonts where all small.

seth · 2021-03-22 23:12:25

https://bugs.archlinux.org/task/70131 - let's hope somebody there is allowed to file gnome bugs.

manyroads · 2021-03-23 00:23:42

FWIW: I fixed my issues by removing questionable themes, all lx related apps and performing reinstalls of essential components. Now everything is hunky-dorey.

xircon · 2021-03-23 20:28:08

glib2 2.68.0-4 has been rolled out and seems to fix the problem.

Arch Linux

#1 2021-03-22 10:00:41

[SOLVED] Lxappearance - Segmentation Fault

#2 2021-03-22 11:55:04

Re: [SOLVED] Lxappearance - Segmentation Fault

#3 2021-03-22 12:29:54

Re: [SOLVED] Lxappearance - Segmentation Fault

#4 2021-03-22 12:38:31

Re: [SOLVED] Lxappearance - Segmentation Fault

#5 2021-03-22 12:52:17

Re: [SOLVED] Lxappearance - Segmentation Fault

#6 2021-03-22 12:55:36

Re: [SOLVED] Lxappearance - Segmentation Fault

#7 2021-03-22 13:13:56

Re: [SOLVED] Lxappearance - Segmentation Fault

#8 2021-03-22 13:18:36

Re: [SOLVED] Lxappearance - Segmentation Fault

#9 2021-03-22 13:18:57

Re: [SOLVED] Lxappearance - Segmentation Fault

#10 2021-03-22 13:22:13

Re: [SOLVED] Lxappearance - Segmentation Fault

#11 2021-03-22 13:29:53

Re: [SOLVED] Lxappearance - Segmentation Fault

#12 2021-03-22 13:34:29

Re: [SOLVED] Lxappearance - Segmentation Fault

#13 2021-03-22 13:42:59

Re: [SOLVED] Lxappearance - Segmentation Fault

#14 2021-03-22 13:54:14

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#15 2021-03-22 14:05:24

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#16 2021-03-22 14:13:33

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#17 2021-03-22 14:22:59

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#18 2021-03-22 14:26:03

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#19 2021-03-22 20:58:22

Re: [SOLVED] Lxappearance - Segmentation Fault

#20 2021-03-22 21:28:25

Re: [SOLVED] Lxappearance - Segmentation Fault

#21 2021-03-22 21:52:04

Re: [SOLVED] Lxappearance - Segmentation Fault

#22 2021-03-22 23:12:25

Re: [SOLVED] Lxappearance - Segmentation Fault

#23 2021-03-23 00:23:42

Re: [SOLVED] Lxappearance - Segmentation Fault

#24 2021-03-23 20:28:08

Re: [SOLVED] Lxappearance - Segmentation Fault

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