It’s been a process of elimination to get my Dell E521 working. Previous workarounds with boot options didn’t work…so I had to use a combination of boot options to get things working nice and stable.
I powered up the PCLinuxOS 2007 Final LiveCD and began the installation to disk. During the bootloader configuration I appended the following text to the end of my linux, failsafe, and framebuffer entry:
noacpi irqpoll pci=routeirq
From there, I saved, closed all programs and rebooted. Upon first boot I opened Synaptic and installed the PCLinuxOS .a64 Kernel which is optimized for 64 bit processors. I then opened up the PCLinuxOS Control Center yet again, went to the boot section and altered my grub bootloader again with the same information in the code above. I rebooted to make sure my changes worked.
When logging in this time, I opened Synaptic and installed the Nvidia 97xx drivers for my graphics card (Fata1ity 7600GT). After this installs you’re prompted to restart X and upon login…you should be presented with quite a stable and quick desktop.
Hopefully this works well for those of you out there that are using E521’s or E520’s as I believe they have the same mainboard (not sure though).
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