http://bugs.winehq.org/show_bug.cgi?id=5146
------- Additional Comments From thunderbird2k@gmx.net 2007-27-07 04:14 ------- Wine uses glXChooseFBConfig in case of GLX 1.3 else it tries to use the SGIX extensions which added this (GLX_SGIX_fbconfig). As far as I have seen this extension is around on all drivers including software Mesa (that was already a long time ago). If there are still issues could you attach the result of WINEDEBUG=+wgl?