Hello. I posted a thread about a similar problem to this one, and found that the solution was to install some packages according to a guide on the Internet. It turns out that Steam working after that was merely a coincidence. I am now randomly experiencing the problem, and I am yet again lost. Steam does not report any errors, nor does any other application on my computer when launching Steam, it just boots up to the login manager and immediately quits prematurely. I cannot play my games until I find out what is causing Steam to quit.
Code:
Running Steam on arch rolling 64-bit
STEAM_RUNTIME is enabled automatically
Pins up-to-date!
Steam client's requirements are satisfied
/home/lonefox256/.local/share/Steam/ubuntu12_32/steam
[2020-12-03 13:53:16] Startup - updater built Dec 2 2020 00:26:37
[2020-12-03 13:53:17] Opted in to client beta 'publicbeta' via beta file
You are in the 'publicbeta' client beta.
Installing breakpad exception handler for appid(steam)/version(1606876649)
[2020-12-03 13:53:19] Loading cached metrics from disk (/home/lonefox256/.local/share/Steam/package/steam_client_metrics.bin)
[2020-12-03 13:53:19] Using the following download hosts for Public, Realm steamglobal
[2020-12-03 13:53:19] 1. http://media4.steampowered.com, /client/, Realm 'steamglobal', weight was 100, source = 'update_hosts_cached.vdf'
Installing breakpad exception handler for appid(steam)/version(1606876649)
[2020-12-03 13:53:19] Verifying installation...
[2020-12-03 13:53:20] Verification complete
Loaded SDL version 2.0.13-6234804
Installing breakpad exception handler for appid(steam)/version(1606876649)
STEAM_RUNTIME_HEAVY: ./steam-runtime-heavy
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
CAppInfoCacheReadFromDiskThread took 250 milliseconds to initialize
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
[1203/135332.016470:INFO:crash_reporting.cc(247)] Crash reporting enabled for process: browser
[1203/135332.857552:WARNING:crash_reporting.cc(286)] Failed to set crash key: UserID with value: 0
[1203/135332.857635:WARNING:crash_reporting.cc(286)] Failed to set crash key: BuildID with value: 1606868822
[1203/135332.857640:WARNING:crash_reporting.cc(286)] Failed to set crash key: SteamUniverse with value: Public
[1203/135332.857645:WARNING:crash_reporting.cc(286)] Failed to set crash key: Vendor with value: Valve
CApplicationManagerPopulateThread took 6993 milliseconds to initialize (will have waited on CAppInfoCacheReadFromDiskThread)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Installing breakpad exception handler for appid(steam)/version(1606876649)
Proceed to auto login
No cached credentials
[1203/135338.908108:WARNING:crash_reporting.cc(286)] Failed to set crash key: UserID with value: 0
[1203/135338.908352:WARNING:crash_reporting.cc(286)] Failed to set crash key: BuildID with value: 1606868822
[1203/135338.908389:WARNING:crash_reporting.cc(286)] Failed to set crash key: SteamUniverse with value: Public
[1203/135338.908412:WARNING:crash_reporting.cc(286)] Failed to set crash key: Vendor with value: Valve
[1203/135338.910722:INFO:crash_reporting.cc(247)] Crash reporting enabled for process: gpu-process
[1203/135339.858744:ERROR:sandbox_linux.cc(372)] InitializeSandbox() called with multiple threads in process gpu-process.
[1203/135341.532444:WARNING:crash_reporting.cc(286)] Failed to set crash key: UserID with value: 0
[1203/135341.532522:WARNING:crash_reporting.cc(286)] Failed to set crash key: BuildID with value: 1606868822
[1203/135341.532528:WARNING:crash_reporting.cc(286)] Failed to set crash key: SteamUniverse with value: Public
[1203/135341.532532:WARNING:crash_reporting.cc(286)] Failed to set crash key: Vendor with value: Valve
[1203/135341.559677:INFO:crash_reporting.cc(247)] Crash reporting enabled for process: utility
INTEL-MESA: warning: Performance support disabled, consider sysctl dev.i915.perf_stream_paranoid=0
Exiting workitem thread
[2020-12-03 13:53:46] Shutdown