Talos wan't start!

[vazquez]

Same as the demo.. Talos won't start at all, and there is no log file/folder.. Win10 22h2 - ok, SSD, RX560 -should be ok, 10GB RAM - ok, but my processor is old, Phenom II quad 960T, 3.2Ghz.. Devs did NOT answered.. WHY?
If my specs are ok, why the game is not working?? SHAME SUPPORT (or there is no support)..

[MASTAN]

It's hard to understand what exactly happens if there are not log files.
Have you tried running executable directly from windows explorer? It may show some error messagebox which Steam silently skips.

[vazquez]

Tried that, launching from Win explorer, but nothing..

[MASTAN]

What else could it be... if you tried to save on download size by copying demo files in the Talos2 folder then that also would cause problems as some people found out. Verifying files then wouldn't help, only clean reinstallation.

Besides that, no idea. If the game can't even get to the log creation part means it's happening quite early during startup. Could it be an unrecognized CPU instruction?

[vazquez]

No, it was clean install.. About CPU - that was my first thought, but I can't be sure until devs confirm..

[DEN [CT]]

To be honest, I don't know what could be the issue here. Mastan's guess about CPU is what I'm thinking as well. Sorry. :(

[Shpongled]

That CPU is from 2010.........

[Hamster]

Same issue here with AMD Phenom II X4 965 CPU...
I struggled to find logs to confirm it comes from an unrecognized CPU instruction.

Anything we can try besides changing motherboard + CPU ? :/

[MASTAN]

Phenom II does not support SSSE3 instructions(don't confuse them with SSE3).
I've used this method https://stackoverflow.com/questions/47878352/how-to-check-if-compiled-code-uses-sse-and-avx-instructions to find if main game executable(Talos2-Win64-Shipping.exe) has any and found quite a lot of them. Meaning Talos 2 requires CPU with at least SSSE3 support.

[DEN [CT]]

Come to think of it - our external testers actually ran the game on Phenoms, and it worked.
So, now I'm extra-confused! :/

[vazquez]

Originally posted by MASTAN:

Phenom II does not support SSSE3 instructions(don't confuse them with SSE3).
I've used this method https://stackoverflow.com/questions/47878352/how-to-check-if-compiled-code-uses-sse-and-avx-instructions to find if main game executable(Talos2-Win64-Shipping.exe) has any and found quite a lot of them. Meaning Talos 2 requires CPU with at least SSSE3 support.

I understand that, but Unreal 5 engine does NOT explicitly require SSSe3 instructions, other games using UE5 work flawlessly at Phenom II CPU..

Originally posted by DEN CT:

Come to think of it - our external testers actually ran the game on Phenoms, and it worked.
So, now I'm extra-confused! :/

I'm now extra confused even more!! How to know where is the problem? Is it possible to make some kind of patch for us using older, but still powerfull CPU (Talos2 is the ONLY game that wan't work at Phenom II)?

[MASTAN]

Originally posted by DEN CT:

Come to think of it - our external testers actually ran the game on Phenoms, and it worked.
So, now I'm extra-confused! :/

Maybe they tested pre-release version that had other compile flags than the release? Can they test it now?

Strictly speaking executable having SSSE3 instructions doesn't mean it always runs them. Could be e.g. optimized version of functions being used only when support is detected. So my above deduction is not conclusive.

[Hamster]

Originally posted by vazquez:

I'm now extra confused even more!! How to know where is the problem? Is it possible to make some kind of patch for us using older, but still powerfull CPU (Talos2 is the ONLY game that wan't work at Phenom II)?

Exactly the same here !

Is there a command to activate a debug trace (in Steam or in TTP2) so we could get more details on why the game closes ?

[Goblin]

Originally posted by Hamster:

Originally posted by vazquez:

I'm now extra confused even more!! How to know where is the problem? Is it possible to make some kind of patch for us using older, but still powerfull CPU (Talos2 is the ONLY game that wan't work at Phenom II)?

Exactly the same here !

Is there a command to activate a debug trace (in Steam or in TTP2) so we could get more details on why the game closes ?

In a browser, open the url steam://open/console and it'll reveal a hidden tab in steam, at the top where it says store library community and your name. When you try to run a game the console output goes there.

[Hamster]

Thanks for the tip!

Unfortunately the console does not help a lot :

GameAction [AppID 835960, ActionID 1] : LaunchApp changed task to SynchronizingCloud with ""
GameAction [AppID 835960, ActionID 1] : LaunchApp changed task to SynchronizingControllerConfig with ""
GameAction [AppID 835960, ActionID 1] : LaunchApp changed task to SiteLicenseSeatCheckout with ""
GameAction [AppID 835960, ActionID 1] : LaunchApp changed task to CreatingProcess with ""
GameAction [AppID 835960, ActionID 1] : LaunchApp waiting for user response to CreatingProcess ""
GameAction [AppID 835960, ActionID 1] : LaunchApp continues with user response "CreatingProcess"
Forced create of Win32Event but it already existed
Forced create of Win32Event but it already existed
Game process added : AppID 835960 ""D:\SteamLibrary\steamapps\common\The Talos Principle 2\Talos2.exe"", ProcID 11320, IP 0.0.0.0:0
GameAction [AppID 835960, ActionID 1] : LaunchApp changed task to WaitingGameWindow with ""
GameAction [AppID 835960, ActionID 1] : LaunchApp changed task to Completed with ""
Game process updated : AppID 835960 ""D:\SteamLibrary\steamapps\common\The Talos Principle 2\Talos2.exe"", ProcID 16840, IP 0.0.0.0:0
Game process removed: AppID 835960 ""D:\SteamLibrary\steamapps\common\The Talos Principle 2\Talos2.exe"", ProcID 16840

I also did a time travel debugging trace of Steam with WinDdg while opening TTP2 but I'm not sure what to look for. Looks like an exception is raised right before the game stops :

KERNELBASE!RaiseException (766bd920)

No idea what it means tho...

[Edit] Found a 3rd person who has the same issue with Phenom II CPU:
https://steamcommunity.com/app/835960/discussions/1/3936769163104276864/

Might be worth investigating if there's a workaround for us to launch our beloved game !

[MASTAN]

Originally posted by Hamster:

I also did a time travel debugging trace of Steam with WinDdg while opening TTP2 but I'm not sure what to look for. Looks like an exception is raised right before the game stops :

KERNELBASE!RaiseException (766bd920)

WinDbg can show exception details. Try these commands when the exception is raised:

.excr

and

!analyze

You can also check the disasm code, which CPU command exception happens on. It could be in another stack frame though.