Eric Anholt wrote:
> On Sun, 2006-05-07 at 21:51 +0200, martinko wrote: 
>> hello list!
>> i've just upgraded X11 from 6.8.2 to 6.9.0 and run into the following issue:
>> after starting x11 for the first time the screen went black and console 
>> was inaccessible (i had to reboot). when i tried the generated xorg.conf 
>> (`Xorg -configure`) it worked. so i started comparing my old config file 
>> with the new one and found out that the following two options i had been 
>> using are the root of the problem:
>>          Option      "AGPMode" "4"       # ++ 2005-02-11 mato
>>          Option      "AGPFastWrite"     # ++ 2005-02-11 mato
>> they just cannot be set both at the same time now.
>> and i wonder why.
>> and also i wonder which one to comment out and which one to keep (if any 
>> at all).
> Comment them both out and live a happier life with a more stable
> computer.  In my testing (and as far as I know, I'm the only one who has
> done performance comparisons with AGPMode), AGPMode 4 provided no
> meaningful performance improvement except under contrived circumstances.
> AGPFastWrite is the most unstable option ever, and I couldn't benchmark
> because it crashes.  We've threatened to just disconnect these options
> upstream and not tell anyone, because they're that harmful but people
> seem to think they're secret performance sauce that the developers don't
> want to give them.

eric, thank you!

could i take this opportunity and ask you about 2 other options i've
been using? -- EnablePageFlip and DynamicClocks -- are they safe/useful?



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