Deus Ex

What works

Main Menu

Gameplay

Changing Settings

Conversations

Multiplayer

What does not

Changing Resolution is Iffy

Workarounds

What was not tested

Gameplay past the first mission

Hardware tested

Graphics:

• GPU:
• Driver:

Additional Comments

The game usually needs a couple of restarts to get all the settings applied properly, and once it's all set up it runs perfectly. The anomaly of choppy graphics still happens for me on my dual core laptop, but installing schedtool and running Deus Ex on one processor gets rid this.

Unreal Engine 1 Games (including Deus Ex 1) won't run correctly on (mobile) hardware with speed-stepping enabled. They will tend run too fast/slow and the game speed will constantly change. If you experience these issues - then try this launcher.

Please note this solution is obsolete and you should use the (still maintained) Kentie Launcher instead.

A modified Launcher can solve this issue. Only two lines of code must be changed and another two lines must be added. Multiple CPU cores are also a cause of issues, but this can be fixed, for example by setting a CPU affinity mask.

Download a custom launcher for Deus Ex.

unzip Launch-DeusEx1112fm-1.0.zip -d "${WINEPREFIX}/drive_c/Program Files/Steam/steamapps/common/Deus Ex/System"

1. Games (menu)
2. Add a Non-Steam Game to My Library
3. BROWSE... to Launch.exe ("C:\Program Files\Steam\SteamApps/common\Deus Ex\System\Launcher.exe"
4. ADD SELECTED GAMES
   
5. RHS (mouse) click on new launcher
6. Properties
7. Rename the new Steam Library entry to "Deus Ex 1 Launcher" (or whatever)

Out-of-the box the stock OpenGL renderer will generate a segmentation fault:

This BASH script will fix the DeusEx.ini file settings to correct this. Note it is recommended to use the newer OpenGL renderer (which is significantly better)

1. Create this script (credit to Morgawr, his original script was used as a basis for this):
#!/bin/bash




#export WINEPREFIX="❚❚❚❚❚❚"


export DEUS_EX_PATH

# Read install path for Deus Ex, from the Wine Registry.
# Note: this requires a first run, when DeusEx is installed under Steam.

DEUS_EX_PATH="$(
     wine reg query 'HKEY_LOCAL_MACHINE\Software\Unreal Technology\Installed Apps\Deus Ex' /v Folder 2>/dev/null \
        | awk '{ if (sub("^[[:blank:]]*Folder[[:blank:]]*REG_SZ[[:blank:]]*","")) print $0 }' \
        | dos2unix
)"

# Fallback to 'C:\DeusEx'

DEUS_EX_PATH="${DEUS_EX_PATH:-C:\\DeusEx}"

printf "Using DeusEx (Windows) install path: '%s'\\n" "${DEUS_EX_PATH}"

# Convert path from Windows to Unix format

DEUS_EX_PATH="$(winepath -u "${DEUS_EX_PATH}" 2>/dev/null)"

if [[ ! -d "${DEUS_EX_PATH}" ]]; then
     printf "DeusEx install path: '%s' ; does not exist\\n" "${DEUS_EX_PATH}" >&2
     exit 1
fi

# Patch settings to make the game work properly on OpenGL devices
# Uses the default DeusEx install path (for the current WINEPREFIX)
if ! sed -i -e '/FrameRateLimit=60/d' \
              -e 's/^GameRenderDevice=.*$/GameRenderDevice=OpenGLDrv.OpenGLRenderDevice/g' \
              -e '/^GameRenderDevice=OpenGLDrv.OpenGLRenderDevice$/a\FrameRateLimit=60' \
              -e 's/FirstRun=.*$/FirstRun=1100/g' \
         "${DEUS_EX_PATH}/System/DeusEx.ini"
then
     printf "Unable to update DeusEx.ini file: '%s'\\n" "${DEUS_EX_PATH}/System/DeusEx.ini" >&2
exit 1
fi

printf "Successfully updated DeusEx.ini file: '%s'\\n" "${DEUS_EX_PATH}/System/DeusEx.ini"

2. Make the script executable & run it:
   chmod +x fix_deus_ex_opengl.sh
   ./fix_deus_ex_opengl.sh
   (ensure your WINEPREFIX env variable is set)