Too many open files crash (proton)

Warhammer 40,000: Darktide Technical Support
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Issue Type (Required):

Crash - During Play

Issue Description (Required):

When logging into game and playing for up to 30 minutes crash occurs. It says: “Failed to open: [path to file] Error: Too many open files. (0x80070004) […]” (screenshot of full message in attachment)

I want to note that I’m playing on Linux utilizing Steam’s Proton compatibility layer. I know that this way to play isn’t officialy supported, and therefore you don’t have to do anything but I still want to report this issue.

I remember that I didn’t always encounter this error, It started about a year (maybe two) ago.

[PC] Do You Use Mods? (Optional):

No, I don’t use mods

Reproduction Rate (Required):

Constant (100%)

Platform (Required):

PC - Steam

Player ID (Optional):

Upload Supporting Evidence (Optional):

image.png
image.png393×185 23.5 KB

[PC] Upload Console Log & darktide_launcher.log (Optional):

console-2026-02-21-13.20.23-578b8ea7-369c-403c-acb5-11668fd5e6c9.log (171 KB)

2

For anyone who will face this issue in future:

Default limit for files opened at once on Linux seems to be 1024. I changed it to 65535, and I haven’t encountered this error again. You can search how to change it on the internet, I won’t specify how here, because it may be different on different distributions.

3 Likes
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Appreciate you posting this update - it really does help our Linux community. :pray: