Red Hat Bugzilla – Bug 840235
kernels 3.5.0 fail to recognize hard disks on a system and consequently do not boot
Last modified: 2012-07-24 19:59:46 EDT
Description of problem:
Booting 3.5.0-... kernels results in all hard disks "not there". Not surprisingly this makes booting, ahem, difficult.
An additional kernel parameter pci=nomsi makes disks recognizable again but why this and not something else it is hard to guess.
Version-Release number of selected component (if applicable):
/dev/sda for 3.5.0-0.rc6.git3.1.fc18.x86_64, as seen in an attached dmesg, comes from a recognition of a USB memory stick which I used to get a copy of an output.
I tried yesterday with 3.5.0-0.rc6.git2.1.fc18.x86_64 kernel and results were exactly the same. I was away for a while so the next older kernel I have on hands is 3.4.0-0.rc4.git2.1.fc18.x86_64 which does see disks (dmesg output attached for comparisons). No idea when this failure showed up for the first time.
Created attachment 598263 [details]
dmesg from a "normal" boot (with a USB memory attached)
Oops! Contrary to what I wrote 'pci=nomsi' does not help. I made a mistake and booted an old kernel.
Created attachment 598264 [details]
dmesg for 3.4.0-0.rc4.git2.1.fc18.x86_64 where disks are recognized
So far none of kernel-3.5.0 kernels sees any disks. The last one tried was
Created attachment 600183 [details]
dmesg for 3.5.0-1.fc18.x86_64 which notices disks again
Kernel 3.5.0-1.fc18.x86_64 started to recognize hard disks again. An output from dmesg for this kernel is attached for completness.