I've looked again on the wine.log contents and found another error message that is always there: Code: err:ntdll:RtlpWaitForCriticalSection section 0x690882c0 "x11drv_main.c: X11DRV_CritSection" wait timed out in thread 0035, blocked by 0034, retrying (60 sec) I decided to run a regression test on wine-git (on version 1.3.29). I have set the start to dlls/winex11.drv and this was the result: Code: 40957d025df468c1693b2c259a76466a857b6d1a is the first bad commit commit 40957d025df468c1693b2c259a76466a857b6d1a Author: Alexandre Julliard <julliard@xxxxxxxxxx> Date: Mon Sep 12 11:39:17 2011 +0200 winex11: Create a separate graphics driver for XRender. :040000 040000 e4a746270bcfd323388eb43d41f14447b5395faa 2b684c018cd203101f052bc993fd53c8bc6553e2 M dlls Unfortunately I didn't figure out how to revert that commit. Git gives me messages about unmerged changes and I'm not that experienced about control version systems.