[KLUG Members] RH7.2 X problem

[members@kalamazoolinux.org]

>>When I run Xconfigurator, it finds the video adapter (onboard AGP SIS),
>>then it exits Xconfigurator with a segmentation fault. No detail or
>>stack info, no clue as to why. Argh.
>I assume the chipset is using UMA (unified memory architecture) to avoid
>having to put dedicated VRAM memory on-board.
>As such, you need to _reserve_ at the LILO prompt the amount of memory
>reserved in the BIOS for VRAM.
>E.g., if you have 256MB or RAM, and the video is setup for 16MB:
>LILO:  linux mem=240MB

I've been down this road. The above trick work for me on an "integrated" video card.

>You might want to "shave off" another 1-2MB "just in case" (e.g., 238MB)
>some is used for shadow RAM or other.

It is usually best.

>>One more thing: would it be worth recompiling the kernel to take
>>advantage of the Athlon CPU? Isn't the stock kernel optimized for i386?
>RedHat 7.1+ includes Athlon-optimized RPMs and they are installed.

Do a uname -a and you should be able to tell what kernel you are running.

>BTW, don't forget to use the "mem=nopentium" option as well to prevent
>the Athlon from using 4MB paging (instead of 4KB paging).  Long story on
>that one, but the stock 2.4.18 kernel is supposed to have the
>workaround.

Someone else said that that fix was including in 2.4.17-rc4,  and 2.4.18 is
actually based on 2.4.17-rc3.  There was quite a thread about the potential
confusion this could create.  The "nopentium" thing got mentioned a few times, 
so it might be worth double checking before grabbing 2.4.18

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