On Sun, 27 Jan 2008, Anton 'FaioN' Mayorov wrote:
Marc Aurele La France wrote:
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Given you've been building from source, please let me know if the attached
patch fixes the problem.
Thank you for the patch, but it doesn't resolved all problems. After
patching, there is no need to set Chipset mach64. But it doesn't fix video
distortion.
Right, that was the intent. Thanks for testing it.
I've done a dig in the code and found that LCD clock calculation is broken.
The previous version of system set LCD clock at approximately 65MHz, my new
build sets it about 150kHz, and I have all my screen distorted. Overriding
the frequency helped a bit, and now I get a jittered X, as with out-of-vsync
on CRT.
I'm not sure if this bug is connected with XFree86 at all. There are several
bits of information that it is a kernel bug. It seems to me that affected
kernel versions are 2.6.22 and 2.6.23. Check this:
http://lkml.org/lkml/2007/6/21/216 .
atyfb has __ALWAYS__ been broken, especially for laptops or adapters not
initialised by BIOS/firmware. And it is unfixable primarily because its
maintainers over the years don't really know what they're doing. That sounds
harsh, but it is true. On ix86, I recommend you use vesafb instead, or
(better) no kernel framebuffer at all.
However, now that you have some kind of display, please send me a
-logverbose 5 log, and I'll see what I can do to mitigate atyfb's latest
brain damage.
Thanks.
Marc.
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