Bug#623514: pm-utils: fails to hibernate on Lenovo T500

[Jonathan Nieder <jrnieder@gmail.com>]

Denis Laxalde wrote:

> Ok. So this test fails and according to the documentation the culprit
> should be a statically compiled driver. I guess I could then try to
> rebuild the kernel with more drivers as modules, but where to start?

Thanks!  In modern times, initramfs-tools lets udev load some modules,
such as the disk and network driver, before calling init.  So
disabling the tpm module entirely to rule out that cause could be a
comfort.  "make localmodconfig" is supposed to create a configuration
with just the currently loaded modules enabled, which could be useful
for coming up with a good starting point.

Another thing to try would be booting into an even more minimal
configuration, without loading any modules or mounting the root
filesystem, by passing the parameter "break=top" on the kernel command
line[1].  It would presumably be necessary to load the appropriate
disk driver ("modprobe ahci") and enable swap ("swapon /dev/sda5") to
get useful results.

[1] see initramfs-tools(8), http://wiki.debian.org/InitramfsDebug
[2] http://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-kernel-org-package