Public bug reported:
listener function for opcode 4 of kde_output_device_mode_v2 is NULL
PID: 2613 (fastfetch)
UID: 1000 (mau)
GID: 1000 (mau)
Signal: 6 (ABRT)
Timestamp: Fri 2026-03-27 19:17:15 -03 (4s ago)
Command Line: fastfetch
Executable: /usr/bin/fastfetch
Control Group:
/user.slice/user-1000.slice/[email protected]/app.slice/app-org.kde.konsole-2574.scope/tab(2605).scope
Unit: [email protected]
User Unit: app-org.kde.konsole-2574.scope
Slice: user-1000.slice
Owner UID: 1000 (mau)
Boot ID: 91998aa4b1864a91a0ec9a50916af270
Machine ID: 8733193312ee4ddcbc3b2a3727fbf24e
Hostname: mau-mac2012
Storage:
/var/lib/systemd/coredump/core.fastfetch.1000.91998aa4b1864a91a0ec9a50916af270.2613.1774649835000000.zst
(present)
Size on Disk: 87.6K
Package: fastfetch/2.57.1+dfsg-1
build-id: 82865a16a0c9ac052beeb0c50305042c76507cb4
Message: Process 2613 (fastfetch) of user 1000 dumped core.
Module /usr/bin/fastfetch from deb fastfetch-2.57.1+dfsg-1.amd64
Module linux-vdso.so.1 from deb linux-7.0.0-10.10.amd64
Module libffi.so.8 from deb libffi-3.5.2-3.amd64
Module libwayland-client.so.0 from deb wayland-1.24.0-2.amd64
Module libzstd.so.1 from deb libzstd-1.5.7+dfsg-3.amd64
Module libz.so.1 from deb
zlib-1:1.3.dfsg+really1.3.1-1ubuntu3.amd64
Module libelf.so.1 from deb elfutils-0.194-4.amd64
Module libyyjson.so.0 from deb yyjson-0.12.0+ds-1.amd64
Stack trace of thread 2613:
#0 0x00007564170a648c __pthread_kill_implementation (libc.so.6
+ 0xa648c)
#1 0x0000756417045b7e __GI_raise (libc.so.6 + 0x45b7e)
#2 0x00007564170288ec __GI_abort (libc.so.6 + 0x288ec)
#3 0x000075641727e623 n/a (libwayland-client.so.0 + 0x7623)
#4 0x000075641727ea82 n/a (libwayland-client.so.0 + 0x7a82)
#5 0x000075641727f7c9 n/a (libwayland-client.so.0 + 0x87c9)
#6 0x000075641727fbc3 wl_display_dispatch_queue_pending
(libwayland-client.so.0 + 0x8bc3)
#7 0x000075641728333a wl_display_dispatch_queue_timeout
(libwayland-client.so.0 + 0xc33a)
#8 0x000075641728340f wl_display_dispatch_queue
(libwayland-client.so.0 + 0xc40f)
#9 0x00007564172834eb wl_display_roundtrip_queue
(libwayland-client.so.0 + 0xc4eb)
#10 0x0000576d34b30311 n/a (/usr/bin/fastfetch + 0xe3311)
#11 0x0000756417270056 n/a (libffi.so.8 + 0xa056)
#12 0x000075641726bd16 n/a (libffi.so.8 + 0x5d16)
#13 0x000075641726e7ae ffi_call (libffi.so.8 + 0x87ae)
#14 0x000075641727e98b n/a (libwayland-client.so.0 + 0x798b)
#15 0x000075641727f7c9 n/a (libwayland-client.so.0 + 0x87c9)
#16 0x000075641727fbc3 wl_display_dispatch_queue_pending
(libwayland-client.so.0 + 0x8bc3)
#17 0x00007564172833ab wl_display_dispatch_queue_timeout
(libwayland-client.so.0 + 0xc3ab)
#18 0x000075641728340f wl_display_dispatch_queue
(libwayland-client.so.0 + 0xc40f)
#19 0x00007564172834eb wl_display_roundtrip_queue
(libwayland-client.so.0 + 0xc4eb)
#20 0x0000576d34b304f9 n/a (/usr/bin/fastfetch + 0xe34f9)
#21 0x0000756417270056 n/a (libffi.so.8 + 0xa056)
#22 0x000075641726bd16 n/a (libffi.so.8 + 0x5d16)
#23 0x000075641726e7ae ffi_call (libffi.so.8 + 0x87ae)
#24 0x000075641727e98b n/a (libwayland-client.so.0 + 0x798b)
#25 0x000075641727f7c9 n/a (libwayland-client.so.0 + 0x87c9)
#26 0x000075641727fbc3 wl_display_dispatch_queue_pending
(libwayland-client.so.0 + 0x8bc3)
#27 0x000075641728333a wl_display_dispatch_queue_timeout
(libwayland-client.so.0 + 0xc33a)
#28 0x000075641728340f wl_display_dispatch_queue
(libwayland-client.so.0 + 0xc40f)
#29 0x00007564172834eb wl_display_roundtrip_queue
(libwayland-client.so.0 + 0xc4eb)
#30 0x0000576d34b32bdb n/a (/usr/bin/fastfetch + 0xe5bdb)
#31 0x0000576d34a8690e n/a (/usr/bin/fastfetch + 0x3990e)
#32 0x0000576d34aeb61d n/a (/usr/bin/fastfetch + 0x9e61d)
#33 0x0000576d34a74ffd n/a (/usr/bin/fastfetch + 0x27ffd)
#34 0x0000576d34a71c59 n/a (/usr/bin/fastfetch + 0x24c59)
#35 0x000075641702a601 __libc_start_call_main (libc.so.6 +
0x2a601)
#36 0x000075641702a718 __libc_start_main_impl (libc.so.6 +
0x2a718)
#37 0x0000576d34a72d45 n/a (/usr/bin/fastfetch + 0x25d45)
ELF object binary architecture: AMD x86-64
** Affects: fastfetch (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2146607
Title:
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