I haven't tried multiple radeon cards, but I seem to recall several people having this problem right around when 4.3.0 was released. I don't think a "proper" fix ever went in and I think the issue was to be revisited later. I don't know if it's needed anymore or not.
Alex --- Jon Smirl <[EMAIL PROTECTED]> wrote: > --- Alex Deucher <[EMAIL PROTECTED]> wrote: > > > 2) access ROM directly instead of relying on copy > > > in low RAM. This allows multiple cards. Required > > > MPP_TB_CONFIG fix in driver. > > > > Is this patch necessary for xfree86? It may address > > some of the issues > > in the email threads I sent out yesterday (ie, > > problems with multiple > > radeon cards and xfree86). if so would you consider > > making one? > > > > Xfree code does not have the patch, but is Xfree > experiencing the bug? Xfree accesses the hardware very > differently than the framebuffer drivers. > > I suspect that you would see this problem if you were > using something else for your primary video and a > Radeon for secondary. The first time you ran Xfree it > would work. But when you exited and restarted Xfree it > would hang when starting the secondary display. > > Where does XFree reset the secondary card? The code > below needs to run right after the reset in the radeon > driver. I added it to my Rage128 driver too but I have > not observed the problem with them. > > Framebuffer code is different and triggers the bug the > first time the secondary display is accessed. > > /* Fix from ATI for problem with Radeon hardware not > leaving ROM enabled */ > unsigned int temp; > temp = INREG(RADEON_MPP_TB_CONFIG); > temp &= 0x00ffffffu; > temp |= 0x04 << 24; > OUTREG(RADEON_MPP_TB_CONFIG, temp); > temp = INREG(RADEON_MPP_TB_CONFIG); > > > ===== > Jon Smirl > [EMAIL PROTECTED] > __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
