With video-nvidia the whole system won’t boot at all. I have tried to reinstall the driver a couple of days ago, but there was no change there. After installing the legacy driver I still was able to launch Proton games, which is no longer the case.
Here is the terminal output of steam-runtime (launched the Windows version of Borderlands 2):
Running Steam on manjarolinux 21.0.6 64-bit
STEAM_RUNTIME is enabled automatically
Pins up-to-date!
Steam client's requirements are satisfied
WARNING: Using default/fallback debugger launch
/home/olk/.local/share/Steam/ubuntu12_32/steam
[2021-06-14 06:34:56] Startup - updater built Jun 8 2021 22:23:36
Installing breakpad exception handler for appid(steam)/version(1623193086)
[2021-06-14 06:34:57] Loading cached metrics from disk (/home/olk/.local/share/Steam/package/steam_client_metrics.bin)
[2021-06-14 06:34:57] Using the following download hosts for Public, Realm steamglobal
[2021-06-14 06:34:57] 1. https://cdn.cloudflare.steamstatic.com, /client/, Realm 'steamglobal', weight was 100, source = 'update_hosts_cached.vdf'
[2021-06-14 06:34:57] 2. https://cdn.akamai.steamstatic.com, /client/, Realm 'steamglobal', weight was 100, source = 'update_hosts_cached.vdf'
[2021-06-14 06:34:57] 3. http://media.steampowered.com, /client/, Realm 'steamglobal', weight was 1, source = 'baked in'
Installing breakpad exception handler for appid(steam)/version(1623193086)
[2021-06-14 06:34:57] Verifying installation...
[2021-06-14 06:34:57] Verification complete
Loaded SDL version 2.0.15-6501165
(steam:4643): Gtk-WARNING **: 06:34:57.433: Unable to locate theme engine in module_path: "adwaita",
/usr/share/themes/Matcha-sea/gtk-2.0/main.rc:1113: error: unexpected identifier 'direction', expected character '}'
/usr/share/themes/Matcha-sea/gtk-2.0/apps.rc:91: error: unexpected identifier 'direction', expected character '}'
Steam: An X Error occurred
X Error of failed request: BadAtom (invalid Atom parameter)
Major opcode of failed request: 20 (X_GetProperty)
Atom id in failed request: 0x0
Serial number of failed request: 12
xerror_handler: X failed, continuing
Steam: An X Error occurred
X Error of failed request: BadAtom (invalid Atom parameter)
Major opcode of failed request: 20 (X_GetProperty)
Atom id in failed request: 0x0
Serial number of failed request: 13
xerror_handler: X failed, continuing
Steam: An X Error occurred
X Error of failed request: BadAtom (invalid Atom parameter)
Major opcode of failed request: 20 (X_GetProperty)
Atom id in failed request: 0x0
Serial number of failed request: 14
xerror_handler: X failed, continuing
Installing breakpad exception handler for appid(steam)/version(1623193086)
STEAM_RUNTIME_HEAVY: ./steam-runtime-heavy
[0614/063457.850395:INFO:crash_reporting.cc(247)] Crash reporting enabled for process: browser
[0614/063457.885573:WARNING:crash_reporting.cc(286)] Failed to set crash key: UserID with value: 0
[0614/063457.885631:WARNING:crash_reporting.cc(286)] Failed to set crash key: BuildID with value: 1623191035
[0614/063457.885635:WARNING:crash_reporting.cc(286)] Failed to set crash key: SteamUniverse with value: Public
[0614/063457.885639:WARNING:crash_reporting.cc(286)] Failed to set crash key: Vendor with value: Valve
/usr/lib/gio/modules/libdconfsettings.so: undefined symbol: g_log_structured_standard
Failed to load module: /usr/lib/gio/modules/libdconfsettings.so
GLib-GIO-Message: Using the 'memory' GSettings backend. Your settings will not be saved or shared with other applications.
[0614/063457.986801:WARNING:crash_reporting.cc(286)] Failed to set crash key: UserID with value: 0
[0614/063457.986867:WARNING:crash_reporting.cc(286)] Failed to set crash key: BuildID with value: 1623191035
[0614/063457.986871:WARNING:crash_reporting.cc(286)] Failed to set crash key: SteamUniverse with value: Public
[0614/063457.986875:WARNING:crash_reporting.cc(286)] Failed to set crash key: Vendor with value: Valve
[0614/063457.987510:INFO:crash_reporting.cc(247)] Crash reporting enabled for process: gpu-process
[0614/063458.186211:WARNING:crash_reporting.cc(286)] Failed to set crash key: UserID with value: 0
[0614/063458.186267:WARNING:crash_reporting.cc(286)] Failed to set crash key: BuildID with value: 1623191035
[0614/063458.186271:WARNING:crash_reporting.cc(286)] Failed to set crash key: SteamUniverse with value: Public
[0614/063458.186275:WARNING:crash_reporting.cc(286)] Failed to set crash key: Vendor with value: Valve
[0614/063458.187341:INFO:crash_reporting.cc(247)] Crash reporting enabled for process: utility
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
CAppInfoCacheReadFromDiskThread took 124 milliseconds to initialize
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
CApplicationManagerPopulateThread took 169 milliseconds to initialize (will have waited on CAppInfoCacheReadFromDiskThread)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Proceed to auto login
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Opted-in Controller Mask for AppId 0: 0
(steam:4643): Gtk-WARNING **: 06:34:59.073: gtk_disable_setlocale() must be called before gtk_init()
local (potentially out of sync) copy of roaming config loaded - 11921 bytes.
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
roaming config store loaded successfully - 11921 bytes.
migrating temporary roaming config store
BRefreshApplicationsInLibrary 1: 14ms
[0614/063500.540226:INFO:crash_reporting.cc(270)] Crash reporting enabled for process: renderer
Installing breakpad exception handler for appid(steam)/version(1623193086)
[0614/063500.642736:INFO:crash_reporting.cc(270)] Crash reporting enabled for process: renderer
[0614/063500.764075:INFO:crash_reporting.cc(270)] Crash reporting enabled for process: renderer
Installing breakpad exception handler for appid(steam)/version(1623193086)
Failed to init SteamVR because it isn't installed
ExecCommandLine: "'/home/olk/.local/share/Steam/ubuntu12_32/steam'"
System startup time: 4.13 seconds
[0614/063501.503368:INFO:crash_reporting.cc(270)] Crash reporting enabled for process: renderer
[0614/063501.518097:INFO:crash_reporting.cc(270)] Crash reporting enabled for process: renderer
Installing breakpad exception handler for appid(steam)/version(1623193086)
BuildCompleteAppOverviewChange: 266
RegisterForAppOverview 1: 11ms
RegisterForAppOverview 2: 11ms
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
[0614/063505.999740:ERROR:frame_sink_video_capturer_impl.cc(206)] Invalid resolutions constraints: 0x0 must not be greater than 0x0; and also within media::limits.
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
[0614/063508.398309:ERROR:frame_sink_video_capturer_impl.cc(206)] Invalid resolutions constraints: 0x0 must not be greater than 0x0; and also within media::limits.
[0614/063508.415640:ERROR:frame_sink_video_capturer_impl.cc(206)] Invalid resolutions constraints: 0x0 must not be greater than 0x0; and also within media::limits.
[49520]Non-Steam Controller Configs Enabled: 1
Installing breakpad exception handler for appid(steam)/version(1623193086)
Installing breakpad exception handler for appid(steam)/version(1623193086)
Opted-in Controller Mask for AppId 49520: 0
GameAction [AppID 49520, ActionID 1] : LaunchApp changed task to ProcessingInstallScript with ""
Installing breakpad exception handler for appid(steam)/version(1623193086)
fsync: up and running.
*** stack smashing detected ***: terminated
wine: Unhandled page fault on read access to FFFFFFFFFFFFFFFF at address 00007FB2E16B5335 (thread 00c0), starting debugger...