Garry's Mod

What works

game loads, loading screen works, runs at an acceptable speed, spawning and tool switching work as long as you can click on it before the cursor disappears. tested the weld and rope tools, which seem to be unaffected by the range restrictions in effect when running in windows (if you attempt to constrain something to something too far away, the constraint does not work properly, and the physgun can normally only pick up objects a certain distance away when running in windows, but in wine you can run constraints from one end of the map to the other without it bugging)

What does not

the hud does not show up, the console text is unreadable, the game runs horribly until you change the video settings to minimum, and the mouse disappears from the in-game spawn menu after about half a second of opening it. 

Workarounds

What was not tested

did not attempt to use anything not included in the base game, and ran the game from a windows partition that had it installed already

Hardware tested

Graphics:

• GPU:
• Driver:

Additional Comments

If your garry's mod crashes before submitting a bug or commenting on here, here is what you should try:

This should fix any HUD issues you may have: (You may not be able to see certain effects like fire in the game with this)
In steam right click Garry's mod click Properties click "SET LAUNCH OPTIONS..." Enter this:
-dxlevel 81
to run in windowed mode add: -window -h 864 -w 1152

This will stop the crash when being killed by a moving object:
In winecfg (terminal -> winecfg) click Add application on the Applications tab
Browse to Program Files\Steam\steamapps\(username)\garrysmod
select hl2.exe and click Open
With hl2.exe selected in the list change the windows version to Windows 98 (via the drop down box near the bottom is should be default say "Use global settings")
Hit Apply/OK, then try to launch Garry's mod again