Files
hytale-f2p-mirror/docs/STEAMDECK_DEBUG_COMMANDS.md
sanasol 4c059f0a6b fix: Steam Deck/Ubuntu crash with jemalloc allocator
Root cause: glibc 2.41 has stricter heap validation that catches a
pre-existing race condition triggered by binary patching.

Changes:
- Add jemalloc auto-detection and usage on Linux
- Add auto-install via pkexec (graphical sudo prompt)
- Clean up clientPatcher.js (remove debug env vars)
- Add null-padding fix for shorter domain replacements
- Document investigation and solution

The launcher now:
1. Auto-detects jemalloc if installed
2. Offers to auto-install if missing (password prompt)
3. Falls back to MALLOC_CHECK_=0 if jemalloc unavailable

Install manually: sudo pacman -S jemalloc (Arch/Steam Deck)
                  sudo apt install libjemalloc2 (Debian/Ubuntu)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-27 05:01:06 +01:00

96 lines
2.3 KiB
Markdown

# Steam Deck / Linux Crash Fix
## SOLUTION: Use jemalloc ✓
The crash is caused by glibc 2.41's stricter heap validation. Using jemalloc as the memory allocator fixes the issue.
### Install jemalloc
```bash
# Steam Deck / Arch Linux
sudo pacman -S jemalloc
# Ubuntu / Debian
sudo apt install libjemalloc2
# Fedora / RHEL
sudo dnf install jemalloc
```
### Launcher Auto-Detection
The launcher automatically uses jemalloc when installed. No manual configuration needed.
To disable (for testing):
```bash
HYTALE_NO_JEMALLOC=1 npm start
```
### Manual Launch with jemalloc
```bash
cd ~/.hytalef2p/release/package/game/latest
LD_PRELOAD=/usr/lib/libjemalloc.so.2 ./Client/HytaleClient --app-dir /home/deck/.hytalef2p/release/package/game/latest --java-exec /home/deck/.hytalef2p/release/package/jre/latest/bin/java --auth-mode authenticated --uuid YOUR_UUID --name Player --identity-token YOUR_TOKEN --session-token YOUR_TOKEN --user-dir /home/deck/.hytalesaves
```
---
## Debug Commands (for troubleshooting)
### Base Command
```bash
cd ~/.hytalef2p/release/package/game/latest
```
### GDB Stack Trace (for crash analysis)
```bash
gdb -ex "run --app-dir ..." ./Client/HytaleClient
# After crash:
bt
bt full
info registers
quit
```
### Test glibc tunables (alternative fixes that didn't work reliably)
**Disable tcache:**
```bash
GLIBC_TUNABLES=glibc.malloc.tcache_count=0 ./Client/HytaleClient ...
```
**Disable heap validation:**
```bash
MALLOC_CHECK_=0 ./Client/HytaleClient ...
```
### Binary Validation
```bash
file ~/.hytalef2p/release/package/game/latest/Client/HytaleClient
ldd ~/.hytalef2p/release/package/game/latest/Client/HytaleClient
```
### Hex Dump Commands
```bash
# Search for hytale.com UTF-16LE
xxd ~/.hytalef2p/release/package/game/latest/Client/HytaleClient.original | grep "6800 7900 7400 6100 6c00 6500 2e00 6300 6f00 6d00"
```
---
## Test Different Patch Modes
```bash
# Restore original
cp ~/.hytalef2p/release/package/game/latest/Client/HytaleClient.original ~/.hytalef2p/release/package/game/latest/Client/HytaleClient
rm ~/.hytalef2p/release/package/game/latest/Client/HytaleClient.patched_custom
# Test UTF-16LE mode
HYTALE_PATCH_MODE=utf16le HYTALE_AUTH_DOMAIN=sanasol.ws npm start
# Test length-prefixed mode (default)
HYTALE_AUTH_DOMAIN=sanasol.ws npm start
```