Ben, Thanks for the information. I used fbset -x and updated XF86Config-4 accordingly.
All of the test results from my original post were without using the kernel fbdev driver. I just now went ahead and added Option "UseFBDev" to the lcd-related device section in XF86Config-4 and set BusID to 0:16:0 in both device sections and now the lcd flickering is gone but both screens are yellow and I am still in clone mode.If I just comment out the Option "UseFBDev" then restart the X server then the lcd flickering returns (and both screens are still yellowish etc.). Given this result I tried comparing the sections of code in the kernel fbdev driver and the XF86 radeon driver that sets up the PLL and there was just a few minor diff's in the default min/max values. I went ahead and changed these to match and recompiled/installed XFree86 4.3 etc. but it didn't make any difference...the flickering still occured. Maybe I am looking at the wrong parts of code....hmmm.... I guess the other weird thing is the color issue (yellowing). It also seems to be related to the BusID setting. If I use 0:16:0 in the device sections then its yellow. If I use 0:10:0 in just the external crt device section (an incorrect value per your earlier comments) then the colors are all ok on both screens etc... In any case I appreiciate your comments. I guess I really want to get down to enabling the dual-head mode first and then I can worry about any flickering and color issues secondarily. On that note I looked at my XF86 log file and noticed the following error: (EE) RADEON (0): FBIOPAN_DISPLAY: Invalid argument This end up being in the fb_ioctl function in the kernel fbmem.c module.I am not sure whats going on in this particular section so maybe you can comment. thanks again, -dean andreakis On Fri, 2003-06-13 at 09:06, Benjamin Herrenschmidt wrote: > > hing is ok. > > > > 2. On the iBook if I set both BusID's in both device sections to 0:10:0 > > then X won't startup even though this is the ID reported by lspci for > > the ATI chip. If I just set the BusID in the device section associated > > with the external CRT to 0:10:0 then X will start and the colors are ok > > but there are scrolling lines in the lcd panel. Also, if I run glxinfo > > then it reports information on just one screen even though I have > > defined two of them. > > I think lspci has hexadecimal output while XF86Config expects decimal, > try 0:16:0 > > > 3. If both are set to BusID 0:16:0 (or just the device section > > associated with the external CRT) then X starts but both screens are > > yellowish and there are scrolling lines in the lcd panel. Also, if I run > > glxinfo then it reports information on two screens (as I expect). > > First get the native modeline of your panel with fbset -x before you > launch X and make sure X uses that for the panel. > > Also, there is a problem with the LCD panel on some iBooks, possibly > yours. On these, for an unknown reason, the PLL values we calcule > provide a flickering display. I have hard coded values in radeonfb > but of course that's not a solution for you. Keeping the firmware set > values would work too if XFree driver can be instructed to do that. > > I'm not too sure how to solve that last problem properly. The > interesting fact is that if I use the same PLL values as MacOS uses, > I also have flickering display. So there is something else that is > interfering with the PLL in some way. It seems though that MacOS > reconfigure the MPLL and SPLL (to obtain the same final clocks but > using a different pair of dividers), there might be something related > to the flickering in there... Only ATI can tell. > > > >From previous mailing list responses around this issue and my test > > results so far I have thought that further development work is required > > on the radeon XFree86 4.3.0 drivers in order to properly enable this > > dual-headed mode on the iBook and relieve some of the other odd issues > > defined above. > > > > Any help in pointing me in the right direction as far as changes > > required etc. with the driver(s) would be appreciated. > > > > -dean andreakis > -- > Benjamin Herrenschmidt <[EMAIL PROTECTED]> >
