having talked with Branden on irc i try to fill in some blanks as good as i know the content and history of the project ...
* Aivils ([EMAIL PROTECTED]) [040402 13:08]: > Here is a possibility add very doubtful thing. Nobody knows how to run > secondary video adapter and secondary xf86 before tests. only testing a specific setup will show if it really works > I have good experience with Nvidia adapters in company with Nvidia closed > source drivers, which set allow usage of GLX on all local xf86 servers and > VGA text mode console on 1st xf86. Even this experiece do not allow me write > "allways success". propriatary Nvidia drivers work mostly, but not allways, as the device associated with the inital console. > My current video set (GeForceMX440, GeForceFX5200PCI, TNT2PCI) will not work > with this "isolateDevice" option, but does oops inside nvidia kernel module > during 3rd xf86 start, both 1st and 2nd xf86 stay alive. Similar story can > write any , which try to start multiple local xf86. Aivils test-box with three heads does not work with the patch in question but oopses in the propriatary nvidia driver during initialisation of it`s third head. This problem occures when more then one local xfree is run. (a head is here the monitor + graphics card + keyboard + mouse combo used when running multi-user-workstations. not the same as in xinerama). > Video card driver should correct use libint10.a libvgahw.a for adapter > initialization, save/restore text mode. Seems condition fulfil for single > xf86, but fail for multiple local xf86. graphics device drivers must use libint10a and libvgahw.a correctly to initialize the hardware and to save/restore text mode. That it works well for one xf86 does not necessary mean that it does for several. > Video driver, libint10.a and vgahw.a > analyzing is to hard for me and i use this patch as is. without thoroughly understanding both libint10.a, vgahw.a and the driver logics, i still use this patch. (?) > Known are matrox, ati open source drivers which support multiple local xf86, > whith various troubles to start hardware DRI. drivers which are known to work relativly well are matrox and ati. DRI works only in exceptions. > Succesful xinerama start does not correlate with successful multiple local > xf86 start, even if hardware set is identic and unchanged. even if xinerama works, multiple local Xservers with this patch can or can not work.
