Matthew Barber wrote: >This might not be an appropriate place to ask this question, but I've >gotten help here before on a number of things... > > >So I have an Athlon XP 2500+ and a DFI motherboard with the nvidia >nforce2 chipset. I have run it for almost a year, and it has been rock >solid under linux (not as much under Windows), red hat 9 and planet >ccrma kernel/drivers/software -- 2.4.26-1.ll.rh90.ccrma. RME hdsp >multiface, and um... 2x512MB Crucial unbuffered DDR400. Great, except - >I have never been able to set the appropriate bus clock in the BIOS >without linux becoming COMPLETELY unstable. If I set it to the >published specs (166Mhz bus, x11 multiplier == 1.83Ghz), I usually can't >even get through the linux boot process; if it makes it through the boot >process, it will usually hang at the NVIDIA screen, or at the signin... >if it makes it past that, I can sign in, do a few things in a shell, but >then after about 2 minutes at most, the system freezes. And we're >talking about a hard freeze - no ctl-alt-del, no ctl-alt-backspace, no >response at all. Windows runs as fine as it ever has. The only way I >can get linux to run stably is to underclock the system at 100Mhz, which >puts my CPU clock at a wimpy 1.1Ghz. Setting the multiplier higher than >11 but maintaining the 100Mhz bus clock results in the same problem. I >thought for a moment that the memory clock and the bus clock weren't >syncing, so I set them in 1:1 ratio - linux still hates it at any >frequency. You can lock AGP at 66Mhz, still nothing doing. This is a >board and proc combo that has been renowned for mega overclocking - I >shouldn't have to underclock it to have things run right. Windows runs >fine so I'm wondering if it's not a problem in my kernel or distro >rather than the bios or hardware. I have not as yet tried to boot >another kernel, but I will tomorrow when my mind is clear (I just >started trying to fix it today, and I'm weary). Any ideas about it, or >about where I could read to fix it? > >Thanks, Matt > > > > Something just hit me while reading this post again, check the CPU speed jumper on your mobo. It needs to be at 133/166mhz for stock operation or 100mhz if your trying to run at 200mhz fsb (overclocking) Rick B