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timerift9's avatar
timerift9
9 months ago

BSOD during EAC splash screen (DX12 beta)

Product: Apex Legends
Platform:Steam-PC
Please specify your platform model. PC
AMD or Nvidia Model Number ROG-STRIX-RXVEGA56-O8G-GAMING
Enter RAM memory size in GB 32
What is your gamertag/PSN ID/EA Account name? timerift_
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible.
Are you using any software with an overlay? No
Which Legend were you playing (if applicable)?
Which Legends were your squad mates using (if applicable)?
Where did the issue occur? In the lobby (waiting area before the match)
Which part of the map or menu were you in? If you don't remember the exact name, please describe the area or what you were trying to do in the menu. Easy Anti-Cheat loading screen
What were you doing when the issue occurred? E.g. respawning a squad mate at a beacon, using an ability, a squad mate left the game. Loading the game
Did your squad mates also experience the issue? No
How many matches had you played in a row before the issue occurred? None
When did this happen? (dd.mm.yy hh:mm)
How often does the bug occur? Often (50% - 99%)
How severe is your issue? Major impacts to gameplay
What happens when the bug occurs? A blue screen with the stop code "unexpected kernel mode trap" appears.
What should be happening instead? The game should start normally.
Steps: How can we find the bug ourselves? I'm not certain you'll be able to reproduce this, but it's as simple as 1. Put computer into sleep mode via Windows Start menu. 2. Wake computer from sleep mode. 3. Log in. 4. Start Steam. 5. Start Apex Legends via Steam. Note that this is on the DirectX 12 beta.

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Platform: PC

Steam user ID: timerift_

OS: Windows 11 Pro 23H2 22631.4037

CPU: AMD Ryzen 5 1600

RAM: 32GB DDR4-3200

GPU: ASUS ROG Strix AMD Radeon RX Vega 56

SSD (system): Samsung 960 Evo 250GB

SSD (storage): Samsung 970 Evo Plus 2TB

GPU driver (AMD Adrenalin Software) version: 24.7.1

Starting Apex via Steam periodically results in a blue screen with the stop code "unexpected kernel mode trap". This occurs during the Easy Anti-Cheat screen during the "Initializing..." phase; it never gets to the "Waiting for game..." phase. Once the computer restarts, the game will start with no issues. Verifying the game files and reinstalling the game from scratch have had no effect. I'm currently playing the DirectX 12 beta, which otherwise works fine.

My guess is that it has something to do with sleep mode. I play at around the same time every day, and in between those play sessions I put the computer into sleep mode overnight. After a given post-BSOD reboot, I can start the game multiple times with no problems, but I get a blue screen the following day after waking the computer from sleep.

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  • timerift9's avatar
    timerift9
    9 months ago

    Just to follow up: A recent Windows update may be the culprit. The BSOD has only been happening since KB5041585 (2024-08 Cumulative Update for Windows 11 Version 23H2 for x64-based Systems) was installed. The issue only appeared recently, and Windows Event Viewer confirms that these particular blue screens have been occurring since the above Windows update was installed on Wednesday, August 14, 2024. People who have had similar issues in other games (I've seen complaints about this happening with Elden Ring and Fortnite) have mentioned that driver/OS updates may be at fault, and here it definitely looks like it's the OS. Is it simply a matter of waiting until their next monthly update, then?

  • timerift9's avatar
    timerift9
    9 months ago

    Following up again: Uninstalling KB5041585 hasn't stopped the BSOD from happening during the EAC screen. Also, it happens regardless of whether I'm on the DX12 beta or DX11. I still think the Windows update had something to do with the issue, unless there was some client update that happened on the same day.

  • timerift9's avatar
    timerift9
    8 months ago

    Another follow-up: used Microsoft's WinDbg debugging tool to look at the crash dumps generated after the blue screens. Turns out the culprit is definitely EasyAntiCheat_EOS.sys. Other users have reported this EAC issue with other games, as I've mentioned. One of the solutions that's often suggested is to delete the EasyAntiCheat folder from wherever Steam games are installed and then verify the game files or to reinstall EAC manually using EasyAntiCheat_EOS_Setup.exe in the same folder, but neither of these have worked. Odds are this is something EAC needs to fix more so than Respawn/EA or Microsoft. I hope the devs can communicate this to them.

    I would attach the most recent crash dump, but this form doesn't allow for .zip uploads (even though it claims to) or .dmp files with their extension changed to .txt.

  • 19XXe's avatar
    19XXe
    6 months ago

    LOL, you came to the same conclusion that I did.

    I got a Legion laptop, and the game crashes every time it starts after waking up the laptop from a sleep state.

    It never crashes if I never put my laptop to sleep. It is definitely an EAC issue and not something fixable by Windows I believe.

    Haven't tested with other games needing EAC though.

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