Description of problem: I have updated my Dell D420 Laptop via yum from FC6 to F7. But after a reboot the Laptop hangs directly after grub. Only some kernel messages where shown. no sysinit. but i cant read any error. any ideas how i can see a better debugging? Version-Release number of selected component (if applicable): Fedora 7 Kernel 2.6.21-1.3194.fc7
i found a workaround. set acpi=off as bootparameter and the kernel boots. is there a acpi problem in 2.6.21 ?
This is a known problem with Dell Duo Core laptops. The usual workaround is to boot with a maxcpus=1 option. A better workaround could be to use the clocksource=acpi_pm option, that seems todo the trick for most users as discussed in bug 241249, of which this is a duplicate. Closing as a dup of bug 241249. *** This bug has been marked as a duplicate of 241249 ***