Hi,
Same here on Archlinux, Editor crash during loading at startup on a new “3d project” created using the UnityHub GUI.
A detailed report with gdb trace etc → [Linux] Unity Startup Crash · GitHub
$ gdb --args $HOME/Unity/Hub/Editor/2020.2.0a8/Editor/Unity -projectpath /home/mizux/Downloads/Unity/Foo
(gdb) run
...
(gdb) bt
#0 0x0000555559f9a578 in AtomicStack::Pop() ()
#1 0x00005555591f68f7 in BucketAllocator::Allocate(unsigned long, int) ()
#2 0x00005555591f7679 in DualThreadAllocator<DynamicHeapAllocator>::Allocate(unsigned long, int) ()
#3 0x00005555591e386b in MemoryManager::Allocate(unsigned long, unsigned long, MemLabelId const&, AllocateOptions, char const*, int) ()
#4 0x00005555591dd4a1 in malloc_internal(unsigned long, unsigned long, MemLabelId const&, AllocateOptions, char const*, int) ()
#5 0x000055555a5ad883 in FMODMemoryAlloc(unsigned int, unsigned int, char const*) ()
#6 0x000055555d106df5 in FMOD::MemPool::alloc(int, char const*, int, unsigned int, bool) ()
#7 0x000055555d1a952b in FMOD::OutputALSA::addALSADriver(char const*) ()
#8 0x000055555d1a987e in FMOD::OutputALSA::getALSANameHintDrivers() ()
#9 0x000055555d1a99f8 in FMOD::OutputALSA::enumerate() ()
#10 0x000055555d1a9b94 in FMOD::OutputALSA::init(int, unsigned int, int*, int, FMOD_SOUND_FORMAT*, int, int, void*) ()
#11 0x000055555d12e588 in FMOD::SystemI::init(int, unsigned int, void*) ()
#12 0x000055555d12391e in FMOD::System::init(int, unsigned int, void*) ()
#13 0x000055555a5b09d5 in AudioManager::InitNormal(bool, FMOD_OUTPUTTYPE) ()
#14 0x000055555a5afb1f in AudioManager::InitFMOD(FMOD_OUTPUTTYPE) ()
#15 0x000055555a5b2c6e in AudioManager::AwakeFromLoad(AwakeFromLoadMode) ()
#16 0x000055555a2ea88d in AwakeFromLoadQueue::InvokePersistentManagerAwake(AwakeFromLoadQueue::Item*, unsigned int, AwakeFromLoadMode, bool) ()
#17 0x000055555a2e9f3a in AwakeFromLoadQueue::PersistentManagerAwakeFromLoad() ()
#18 0x000055555a26b46f in PersistentManager::IntegrateAllThreadedObjects() ()
#19 0x000055555a26c18b in PersistentManager::LoadAndIntegrateAllPreallocatedObjects(PersistentManager::LockFlags) ()
#20 0x000055555a26ab32 in PersistentManager::ReadObject(int, AwakeFromLoadMode) ()
#21 0x00005555587e7bc1 in PPtr<Object>::operator Object*() const ()
#22 0x000055555ba18bdc in AssetDatabase::ProduceSingletonAsset(core::basic_string<char, core::StringStorageDefault<char> > const&, core::basic_string<char, core::StringStorageDefault<char> > const&, bool) ()
#23 0x000055555ba18733 in AssetDatabase::ReloadSingletonAssets() ()
#24 0x000055555b038c99 in ModuleMetadata::GetModules() ()
#25 0x000055555b038639 in ModuleMetadata::PackageManagerResolve(dynamic_array<PackageManager::UpmPackageInfo, 0ul> const*) ()
#26 0x000055555bd7bf65 in PackageManager::PackageAssets::RegisterPackages(dynamic_array<PackageManager::UpmPackageInfo, 0ul> const&) ()
#27 0x000055555bd7ce91 in PackageManager::PackageAssets::ResolvePackages() ()
#28 0x000055555bd3033b in PackageManager::Project::Resolve() ()
#29 0x000055555bd2fa47 in PackageManager::Project::Init(core::basic_string<char, core::StringStorageDefault<char> > const&, core::basic_string<char, core::StringStorageDefault<char> > const&) ()
#30 0x000055555bd30735 in PackageManager::Project::Refresh(bool) ()
#31 0x000055555bd9f83a in PackageManager::Api::Refresh() ()
#32 0x000055555baad371 in CallbackArray1<AssetDatabase::UpdateAssetOptions>::Invoke(AssetDatabase::UpdateAssetOptions) ()
#33 0x000055555baac4a8 in InitializeAssetDatabaseV2(bool, bool, bool, int*) ()
#34 0x000055555ba31e45 in AssetDatabase::InitializeAssetDatabase(bool, bool, bool, int*) ()
#35 0x000055555ae995d0 in Application::InitializeProject() ()
#36 0x000055555b99f44b in InitializeUnity(void*) ()
#37 0x00007ffff0a48c04 in () at /usr/lib/libglib-2.0.so.0
#38 0x00007ffff0a4958f in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#39 0x00007ffff0a4b531 in () at /usr/lib/libglib-2.0.so.0
#40 0x00007ffff0a4b571 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#41 0x00007ffff10bda93 in gtk_main_iteration_do () at /usr/lib/libgtk-3.so.0
#42 0x000055555b9a1096 in PumpGtkMainloop(bool) ()
#43 0x000055555b99f7b0 in CheckFocus(void*) ()
#44 0x00007ffff0a4958f in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#45 0x00007ffff0a4b531 in () at /usr/lib/libglib-2.0.so.0
#46 0x00007ffff0a4c543 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0
#47 0x00007ffff10bdbff in gtk_main () at /usr/lib/libgtk-3.so.0
#48 0x000055555b99edb8 in main ()