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Bug#1050410: gcin: Can't access KDE after installing gcin and hime on Debian 12.

On 2023-08-24 18:22, zendas wrote:

Dear Gunnar Hjalmarsson,

Thank you for your prompt response regarding the GCIN error. I have
followed the instructions provided in your email and manually
executed the necessary steps. As a result, I have collected some log
and record information that might help in diagnosing the issue.

Please find the attached document which contains the detailed records
and logs. I hope this information will assist in resolving the GCIN
error swiftly.

I appreciate your continuous support and assistance. Please let me
know if you require any additional information or if there are
further steps I should take.

Thank you and looking forward to your feedback.
Thanks for the log snippets! While they might be useful, my technical skill is not sufficient to make sense of them. Hopefully some more experienced developer chimes in.
But in any case we should try to narrow the scope of this bug report. First, let's focus on gcin (which this bug was reported against) and leave hime aside for now.
As regards gcin I can trigger a segfault when playing around in Debian testing. It segfaults for me in Wayland sessions: 

$ env | grep -i type
XDG_SESSION_TYPE=wayland
$ gcin &
[1] 2567
$ ^C
[1]+  Segmentation fault      (core dumped) gcin
$

But not in X11 sessions:

$ env | grep -i type
XDG_SESSION_TYPE=x11
$ gcin &
[1] 2565
$ ^C
$

And rebuilding gcin does not help against the segfault on Wayland.
But I still do not understand how it prevents you from being able to log in to the session. 

So in the light of that I have some specific questions:

1. Is it in Plasma (Wayland) sessions you observe the issues?
2. Does gcin work as expected if you log in to a Plasma (X11) session instead? 

3. Which display manager do you use? (I used sddm when testing.)

--
Rgds,
Gunnar
(gcin:1283): GLib-GObject-WARNING **: 00:07:31.783: invalid cast from 'GdkWaylandDisplay' to 'GdkX11Display'
程式記憶體區段錯誤 (核心已傾印)

[    5.411281] kauditd_printk_skb: 14 callbacks suppressed
[    5.411284] audit: type=1400 audit(1692893581.151:25): apparmor="DENIED" operation="capable" profile="/usr/sbin/cupsd" pid=672 comm="cupsd" capability=12  capname="net_admin"
[    5.412992] NET: Registered PF_QIPCRTR protocol family
[    5.675424] e1000: ens33 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
[    5.684463] IPv6: ADDRCONF(NETDEV_CHANGE): ens33: link becomes ready
[    6.354811] vmwgfx 0000:00:0f.0: [drm] Using CursorMob mobid 3, max dimension 2048
[    6.358025] vmwgfx 0000:00:0f.0: [drm] Using CursorMob mobid 4, max dimension 2048
[   19.498707] input: VMware DnD UInput pointer as /devices/virtual/input/input7
[   30.495969] gcin[1279]: segfault at 55848f4a2970 ip 000055a83be06055 sp 00007ffc49ac6160 error 4 in gcin[55a83be04000+30000] likely on CPU 0 (core 0, socket 0)
[   30.495982] Code: 00 e8 ef e9 ff ff 48 89 c7 e8 e7 f5 ff ff 48 89 c2 48 89 05 e5 2b 04 00 48 63 80 e0 00 00 00 48 c1 e0 07 48 03 82 e8 00 00 00 <48> 8b 40 10 48 89 05 e8 2b 04 00 b8 00 00 00 00 e8 de fd ff ff e8

Hint: You are currently not seeing messages from other users and the system.
      Users in groups 'adm', 'systemd-journal' can see all messages.
      Pass -q to turn off this notice.
           PID: 1283 (gcin)
           UID: 1000 (zendas)
           GID: 1000 (zendas)
        Signal: 11 (SEGV)
     Timestamp: Fri 2023-08-25 00:07:31 CST (6min ago)
  Command Line: gcin
    Executable: /usr/bin/gcin
 Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-org.kde.konsole-086cf5af2cba4655a9e0bdc56020187d.scope
          Unit: user@1000.service
     User Unit: app-org.kde.konsole-086cf5af2cba4655a9e0bdc56020187d.scope
         Slice: user-1000.slice
     Owner UID: 1000 (zendas)
       Boot ID: 97ac1ee1e63340afb8897e43a2c9907c
    Machine ID: ebc50bcff6434971bf6f226dd3ff2113
      Hostname: debian
       Storage: /var/lib/systemd/coredump/core.gcin.1000.97ac1ee1e63340afb8897e43a2c9907c.1283.1692893251000000.zst (present)
  Size on Disk: 843.9K
       Message: Process 1283 (gcin) of user 1000 dumped core.

                Module libsystemd.so.0 from deb systemd-252.12-1~deb12u1.amd64
                Stack trace of thread 1283:
                #0  0x0000562d5c4e3055 n/a (gcin + 0xd055)
                #1  0x00007f60ae96a1ca n/a (libc.so.6 + 0x271ca)
                #2  0x00007f60ae96a285 __libc_start_main (libc.so.6 + 0x27285)
                #3  0x0000562d5c4e2731 n/a (gcin + 0xc731)

                Stack trace of thread 1284:
                #0  0x00007f60aea3f03f __poll (libc.so.6 + 0xfc03f)
                #1  0x00007f60aed999ae n/a (libglib-2.0.so.0 + 0x549ae)
                #2  0x00007f60aed99acc g_main_context_iteration (libglib-2.0.so.0 + 0x54acc)
                #3  0x00007f60aed99b11 n/a (libglib-2.0.so.0 + 0x54b11)
                #4  0x00007f60aedc3cfd n/a (libglib-2.0.so.0 + 0x7ecfd)
                #5  0x00007f60ae9cc044 n/a (libc.so.6 + 0x89044)
                #6  0x00007f60aea4c5fc n/a (libc.so.6 + 0x1095fc)

                Stack trace of thread 1285:
                #0  0x00007f60aea44539 syscall (libc.so.6 + 0x101539)
                #1  0x00007f60aedee50c g_cond_wait_until (libglib-2.0.so.0 + 0xa950c)
                #2  0x00007f60aed67881 n/a (libglib-2.0.so.0 + 0x22881)
                #3  0x00007f60aedc4722 n/a (libglib-2.0.so.0 + 0x7f722)
                #4  0x00007f60aedc3cfd n/a (libglib-2.0.so.0 + 0x7ecfd)
                #5  0x00007f60ae9cc044 n/a (libc.so.6 + 0x89044)
                #6  0x00007f60aea4c5fc n/a (libc.so.6 + 0x1095fc)

                Stack trace of thread 1286:
                #0  0x00007f60aea3f03f __poll (libc.so.6 + 0xfc03f)
                #1  0x00007f60aed999ae n/a (libglib-2.0.so.0 + 0x549ae)
                #2  0x00007f60aed99acc g_main_context_iteration (libglib-2.0.so.0 + 0x54acc)
                #3  0x00007f60ad7f54bd n/a (libdconfsettings.so + 0xb4bd)
                #4  0x00007f60aedc3cfd n/a (libglib-2.0.so.0 + 0x7ecfd)
                #5  0x00007f60ae9cc044 n/a (libc.so.6 + 0x89044)
                #6  0x00007f60aea4c5fc n/a (libc.so.6 + 0x1095fc)

                Stack trace of thread 1287:
                #0  0x00007f60aea3f03f __poll (libc.so.6 + 0xfc03f)
                #1  0x00007f60aed999ae n/a (libglib-2.0.so.0 + 0x549ae)
                #2  0x00007f60aed99cef g_main_loop_run (libglib-2.0.so.0 + 0x54cef)
                #3  0x00007f60ae87d8f6 n/a (libgio-2.0.so.0 + 0x1188f6)
                #4  0x00007f60aedc3cfd n/a (libglib-2.0.so.0 + 0x7ecfd)
                #5  0x00007f60ae9cc044 n/a (libc.so.6 + 0x89044)
                #6  0x00007f60aea4c5fc n/a (libc.so.6 + 0x1095fc)
                ELF object binary architecture: AMD x86-64

(hime:1282): Gtk-WARNING **: 00:11:17.927: 無法在 module_path 中找出佈景主題引擎：‘adwaita’，/usr/share/hime/script/hime-user-setup: 8: pushd: not found
/usr/share/hime/script/hime-user-setup: 22: pushd: not found
/usr/share/hime/script/hime-user-setup: 37: popd: not found
/usr/share/hime/script/hime-user-setup: 38: popd: not found
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