My system is a Dell 2350 with a PCI graphics board. The onboard Intel AGP video is unused.
The Dell BIOS is buggy: when the system boots via PCI video, it leaves the onboard AGP video in a semi-catatonic state. Subsequently, if Linux attempts to load the intel-agp kernel module (or was it intel-mch-agp?), the system freezes hard. I first encountered this issue with Hoary, and worked around it by deleting/renaming the intel-agp.ko and intel-mch-agp.ko files so that the kernel module loader would not find them. Comment #10 in the thread at http://www.ubuntuforums.org/showthread.php?t=237141 describes a cleaner way of addressing the problem---once the system is installed---using a modprobe blacklist. (For installation, it appears that the PCI video card had to be disabled to avoid the freeze.) I recall seeing once a list message from a Red Hat developer on this issue circa 2.6.13, but cannot find it now, and a search of the kernel changelogs since then turns up nothing apropos. -- hangs on "starting hotplug subsystems" when pci video is on https://launchpad.net/bugs/26814 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
