CSGO stuck at black screen

**Game information**

CSGO

**Distribution name and version where applicable**

Fedora 35 Workstation

**Flatpak info**

```
❯ flatpak --version

Flatpak 1.12.3
```
```
❯ flatpak --gl-drivers

default
host
```
**Problem description**

CSGO will not launch, and will be stuck on a black screen.

i think these logs might help, i ran steam using the cli:
```
(steam:145): LIBDBUSMENU-GLIB-WARNING **: 21:32:23.173: Trying to remove a child that doesn't believe we're it's parent.

(steam:145): LIBDBUSMENU-GLIB-WARNING **: 21:32:23.173: Trying to remove a child that doesn't believe we're it's parent.

(steam:145): LIBDBUSMENU-GLIB-WARNING **: 21:32:23.173: Trying to remove a child that doesn't believe we're it's parent.

(steam:145): LIBDBUSMENU-GLIB-WARNING **: 21:32:23.173: Trying to remove a child that doesn't believe we're it's parent.
Did not detect any valid joysticks.
Timed out waiting for game mapping!
RESZ NOT SUPPORTED!
INTZ NOT SUPPORTED!
RESZ NOT SUPPORTED!
INTZ NOT SUPPORTED!

##### swap interval = 0 swap limit = 1 #####
Filesystem successfully switched to safe whitelist mode
failed to dlopen /home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/bin/matchmaking_client.so error=/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/bin/matchmaking_client.so: wrong ELF class: ELFCLASS32
failed to dlopen /home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/bin/client_client.so error=/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/bin/client_client.so: wrong ELF class: ELFCLASS32
CClientSteamContext logged on = 1
failed to dlopen /home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/bin/server_client.so error=/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/bin/server_client.so: wrong ELF class: ELFCLASS32
Game.dll loaded for "Counter-Strike: Global Offensive"
failed to dlopen /home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/bin/soundemittersystem_client.so error=/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/bin/soundemittersystem_client.so: wrong ELF class: ELFCLASS32
failed to dlopen /home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/bin/scenefilecache_client.so error=/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/bin/scenefilecache_client.so: wrong ELF class: ELFCLASS32
CGameEventManager::AddListener: event 'server_pre_shutdown' unknown.
CGameEventManager::AddListener: event 'game_newmap' unknown.
CGameEventManager::AddListener: event 'finale_start' unknown.
CGameEventManager::AddListener: event 'round_start' unknown.
CGameEventManager::AddListener: event 'round_end' unknown.
CGameEventManager::AddListener: event 'difficulty_changed' unknown.
CGameEventManager::AddListener: event 'player_death' unknown.
CGameEventManager::AddListener: event 'hltv_replay' unknown.
CGameEventManager::AddListener: event 'player_connect' unknown.
CGameEventManager::AddListener: event 'player_disconnect' unknown.
GameTypes: missing mapgroupsSP entry for game type/mode (custom/custom).
GameTypes: missing mapgroupsSP entry for game type/mode (cooperative/cooperative).
GameTypes: missing mapgroupsSP entry for game type/mode (cooperative/coopmission).
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/conf.d/41-repl-os-win.conf", line 148: Having multiple values in isn't supported and may not work as expected
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/conf.d/41-repl-os-win.conf", line 160: Having multiple values in isn't supported and may not work as expected
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/fonts.conf", line 31: Use of ambiguous path in element. please add prefix="cwd" if current behavior is desired.
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/fonts.conf", line 38: unknown element "fontpattern"
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/fonts.conf", line 39: unknown element "fontpattern"
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/fonts.conf", line 40: unknown element "fontpattern"
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/fonts.conf", line 41: unknown element "fontpattern"
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/fonts.conf", line 42: unknown element "fontpattern"
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/conf.d/41-repl-os-win.conf", line 148: Having multiple values in isn't supported and may not work as expected
Fontconfig warning: "/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Counter-Strike Global Offensive/csgo/panorama/fonts/conf.d/41-repl-os-win.conf", line 160: Having multiple values in isn't supported and may not work as expected
[ALSOFT] (EE) Failed to set real-time priority for thread: Operation not permitted (1)
[ALSOFT] (EE) Failed to set real-time priority for thread: Operation not permitted (1)
```
**Does this issue reproduce with native Steam**

It's broken for a different reason. https://github.com/ValveSoftware/csgo-osx-linux/issues/2651
this fixed it on fedora https://github.com/ValveSoftware/csgo-osx-linux/issues/2651#issuecomment-966213816 / https://github.com/ValveSoftware/csgo-osx-linux/issues/2659#issuecomment-1081135949