https://github.com/ValveSoftware/steam-for-linux/issues/12405
I think those might be related
after some testing I've figured out that disabling open mic on party fixes the crash
That's the most insane thing I've ever heard... and it worked for me too, so thanks for that. The weird part is that I can still talk and hear in matches just fine.
WTF, why disabling open mic works? hahahaha
Idk, but thanks!
I have this same problem, also on Fedora 43. On my machine I had to not only disable party open mic but also enable team open mic. After I joined the party I could disable team open mic.
Same issue here. Steam aborts with the following signal:
Jul 09 00:54:41 bazzite steam[122228]: terminate called after throwing an instance of 'std::length_error'
Jul 09 00:54:41 bazzite steam[122228]: what(): basic_string::_S_create
Disabling open mic didn't work for me, never had it enabled. Will post when I learn more.
Turns out the microphone cannot have ANY audio going through it when you connect to a party.
Disabling the microphone with
amixer set Capture nocap
Join a party, wait a sec, then
amixer set Capture cap
makes the game work like normal again.
Nevermind, having the microphone on at all causes steam to eventually crash. Only way to play right now is to keep it muted at an OS level, disconnecting deadlock doesn't seem to help. Steam itself somehow is getting access to the microphone and crashing.
Even with all microphones manually disconnected from the computer, with a blank virtual audio source set to default so that there's no way to get any microphone audio-- steam still crashes when I press my PTT key... which is F24...
Not pressing F24 seems to have fixed it.. but I need more time to test to verify that this is indeed my issue.
I've found that it was due to me using push to talk with the F24 key. Generated with a configurable foot-pedal keyboard.
I fixed it by making it use a key other than F24. It's probable that there's an invalid set of keys that will crash Steam. I made a new issue as I'm not sure it's actually related to this crash.
Confirmed the bug. Just pressing the party chat button even while muted on the OS level crashes the game
Hyprland 0.56.0 built from branch v0.56.0 at commit 36b2e0cfe0c6094dbc47bd42a437431315bb3087 clean (version: bump to 0.56.0).
Date: Mon Jul 20 07:50:48 2026
Tag: v0.56.0, commits: 7625
Libraries:
Hyprgraphics: built against 0.5.1, system has 0.5.1
Hyprutils: built against 0.14.0, system has 0.14.0
Hyprcursor: built against 0.1.13, system has 0.1.13
Hyprlang: built against 0.6.8, system has 0.6.8
Aquamarine: built against 0.13.0, system has 0.13.0
Version ABI string: 36b2e0cfe0c6094dbc47bd42a437431315bb3087_aq_0.13_hu_0.14_hg_0.5_hc_0.1_hlg_0.6
no flags were set
Stack trace of thread 32157:
#0 0x00000000f7ee82ec __kernel_vsyscall (linux-gate.so.1 + 0x22ec)
#1 0x00000000f7bb0da7 n/a (/usr/lib32/libc.so.6 (deleted) + 0xb3da7)
ELF object binary architecture: Intel 80386
Hi
I have an issue on my Fedora 43 Linux system with joining to lobby with friends. When I join it or they join to me it crushes the whole steam and dies..... I've already tried to reinstall the game and to change proton versions but nothing helps. Any ideas what can I try also?
Running steam via terminal gives this:
launched the game
fsync: up and running.
chdir "/home/kirill/.local/share/Steam/steamapps/common/Deadlock"
ERROR: ld.so: object '/home/kirill/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/kirill/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
Game Recording - would start recording game 1422450, but recording for this game is disabled
Adding process 27567 for gameID 1422450
ERROR: ld.so: object '/home/kirill/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
ERROR: ld.so: object '/home/kirill/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/home/kirill/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
Adding process 27568 for gameID 1422450
Adding process 27569 for gameID 1422450
Adding process 27642 for gameID 1422450
Adding process 27643 for gameID 1422450
Adding process 27644 for gameID 1422450
fsync: up and running.
Adding process 27645 for gameID 1422450
Adding process 27648 for gameID 1422450
Adding process 27650 for gameID 1422450
Adding process 27653 for gameID 1422450
Adding process 27662 for gameID 1422450
Adding process 27667 for gameID 1422450
Adding process 27674 for gameID 1422450
Adding process 27697 for gameID 1422450
Adding process 27716 for gameID 1422450
Fossilize INFO: Overriding serialization path: "/home/kirill/.local/share/Steam/steamapps/shadercache/1422450/fozpipelinesv6/steamapprun_pipeline_cache".
01/21 23:18:57 minidumps folder is set to /tmp/dumps
01/21 23:18:57 Init: Installing breakpad exception handler for appid(gameoverlayui)/version(20251223004807)/tid(27808)
01/21 23:18:57 Init: Installing breakpad exception handler for appid(gameoverlayui)/version(1.0)/tid(27808)
01/21 23:19:02 minidumps folder is set to /tmp/dumps
imDefLkup.c,430: The application disposed a key event with 230 serial.
Joined the friend lobby
[2026-01-21 23:20:15] Background update loop checking for update. . .
[2026-01-21 23:20:15] Checking for available updates...
[2026-01-21 23:20:15] Downloading manifest: https://client-update.fastly.steamstatic.com/steam_client_ubuntu12
[2026-01-21 23:20:15] Manifest download: send request
[2026-01-21 23:20:15] Manifest download: waiting for download to finish
[2026-01-21 23:20:16] Manifest download: finished
[2026-01-21 23:20:16] Download skipped by HTTP 304 Not Modified
[2026-01-21 23:20:16] Nothing to do
src/clientdll/interfacemap_client.h (5583) : Assertion Failed: Fencepost deserialize mismatch in IClientNetworkingSocketsSerialized::SendP2PRendezvous
src/clientdll/interfacemap_client.h (5583) : Assertion Failed: Fencepost deserialize mismatch in IClientNetworkingSocketsSerialized::SendP2PRendezvous
assert_20260121232017_39.dmp[28138]: Uploading dump (out-of-process)
/tmp/dumps/assert_20260121232017_39.dmp
terminate called after throwing an instance of 'std::length_error'
what(): basic_string::_S_create
crash_20260121232017_40.dmp[28142]: Uploading dump (out-of-process)
/tmp/dumps/crash_20260121232017_40.dmp
assert_20260121232017_39.dmp[28138]: Finished uploading minidump (out-of-process): success = yes
assert_20260121232017_39.dmp[28138]: response: CrashID=bp-8f1817e2-9855-4694-a1e3-a92fa2260121
assert_20260121232017_39.dmp[28138]: file ''/tmp/dumps/assert_20260121232017_39.dmp'', upload yes: ''CrashID=bp-8f1817e2-9855-4694-a1e3-a92fa2260121''
/home/kirill/.local/share/Steam/steam.sh: line 928: 26534 Aborted (core dumped) "$STEAMROOT/$STEAMEXEPATH" "$@"
kirill@fedora:~$ crash_20260121232017_40.dmp[28142]: Finished uploading minidump (out-of-process): success = yes
crash_20260121232017_40.dmp[28142]: response: CrashID=bp-8653c9ee-b652-42d4-962d-419b22260121
crash_20260121232017_40.dmp[28142]: file ''/tmp/dumps/crash_20260121232017_40.dmp'', upload yes: ''CrashID=bp-8653c9ee-b652-42d4-962d-419b22260121''
My suggestion is that there are some troubles with network interaction of steam and the game but I'm not sure. Online matchmaking and training with bots launches normally.