Red Hat Bugzilla – Bug 155236
thinkpad r40e boot failure with acpi enabled.
Last modified: 2015-01-04 17:18:59 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050416 Fedora/1.0.3-2 Firefox/1.0.3 Description of problem: linux will not boot unless acpi=off is specified. Obviously this is undesirable as I would like to at least be able to see battery charge level. A little testing and a few recompiles to narrow this down showed that setting "CONFIG_ACPI_PROCESSOR=n" enabled booting and other acpi features worked fine. Ideally should not have to do this workaround since ACPI idle handler is desirable. Version-Release number of selected component (if applicable): kernel-2.6.11-1.1240_FC4 How reproducible: Always Steps to Reproduce: 1. attempt to boot unmodified rpm kernel. Actual Results: freeze during boot. reboot required. Expected Results: normal boot. Additional info: the kernel gets as far as detecting ide hardware before freezing.
I forgot to mention that this is not a recent regression and so not so high priority perhaps. It hasn't worked on any of the kernels I tested since the original FC3 one.
I notice there is already something in linux-2.6.11/drivers/acpi/processor_idle.c for "IBM ThinkPad R40e" but it doesnt apply to my machine because of a differing bios version (mine appears newer) I tried adding something similar and now the machine boots with the original .config supplied in the default fedora rpm. I don't know if this fixes the issue properly. It apparently prevents the machine going to c2/c3 but at least users can install and run FC on their machines until it is fixed better. See attached patch.
Created attachment 113376 [details] makes r40e with bios version 1SET61WW able to boot.
Thanks, applied to CVS. Will be in tomorrows build.
works fine now using 2.6.11-1.1251_FC4 thanks.