CrtScreen option was introduced in X4.20 to let the mode validation routine for flat panel to fall back to the standard CRT routine. While it solved some problems, it also caused quite a few nasty problems on certain panels (especially on laptop panels). After X4.20, with better mode routines for flat panels merged into CVS, this option was removed. About that time, a lot of OEM cards started showing up on the market. Some of these cards have the monitor detection problem (caused by inconsistent BIOS rules) as you've experienced. The CrtScreen option in the older versions actually helped to workaround this problem in some cases (as you did), although it's not originally intended for this option. To properly solve the monitor detection problem, a patch was put together later. Unfortunally, with time running out, the patch was too big to be merged in for X4.30 release. This leaves the monitor detection problem for certain OEM cards unsolved.
Hopefully we can get the proper solution for this problem into CVS in the near future. Meanwhile you probably have to stay with the version that worked for you. Hui > Hi, > > I've already asked Marc Aurele La France this question, who maintains > the ATI driver. > > He told me to post my question to this address, so here it goes: > > /me wrote: > > [...] > I'm using a radeon 8500 (from hercules) video adapter and just > upgraded XFree86 from 4.2.99 to 4.3.0. > When I first tried to use the ati driver in 4.2.x I ran into > the problem, that my monitor was not detected correctly. > I got the error message > | (EE) RADEON(0): No valid mode found for this DFP/LCD > although I had just a CRT screen connected to the vga output. > I had a look at the log file and it said I should try > Option "CrtScreen" in my XFree86Config... and it worked > well for me. > > It seems that in version 4.3.0 of XFree86 this option has been > removed from the radeon driver and I'm getting the same error > message as above when I try to start X11. (No valid mode...) > > On the XFree86 webpage I found the option "crt_screen" in the > ATI Adapters README file. > This option doesn't work as well. ;( > > Why has this option been removed and how do I set up > X11 to work properly on my system? > > I'm sending my XFree86Config and my XFree86.0.log as an attachement. > The commented part is a relict from the fglrx driver test, that > didn't work well with 4.2.x and doesn't work with 4.3.0 at all. > > thanks, > Daniel > > -- > eat(this); // delicious suicide > _______________________________________________ > XFree86 mailing list > [EMAIL PROTECTED] > http://XFree86.Org/mailman/listinfo/xfree86 > _______________________________________________ XFree86 mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xfree86
