I have several (new) systems on which I had to install SLES11 on. However, after a few (though not every) reboots, the system hangs during the boot sequence. It will only continue after I physically press a key on the keyboard.

From what I've found in the dmesg log from a failed boot is the following:

[   22.170276] sd 0:0:0:0: [sda] Mode Sense: b7 00 00 08
[   22.171155] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[   22.182760]  sda: sda1 sda2 sda3
[   22.383424] sd 0:0:0:0: [sda] Attached SCSI disk
[   22.545372] PM: Marking nosave pages: 000000000009a000 - 0000000000100000
[   22.545377] PM: Marking nosave pages: 00000000bf780000 - 0000000100000000
[   22.546217] PM: Basic memory bitmaps created
[   22.590380] PM: Basic memory bitmaps freed
[   22.596284] PM: Starting manual resume from disk
[   22.602319] PM: Resume from partition 8:1
[   22.602321] PM: Checking hibernation image.
[   22.602479] PM: Error -22 checking image file
[   22.602481] PM: Resume from disk failed.
[   22.718727] kjournald starting.  Commit interval 15 seconds
[   22.718960] EXT3-fs (sda3): using internal journal
[   22.718964] EXT3-fs (sda3): mounted filesystem with ordered data mode
[ 1555.644404] udevd version 128 started
[ 1555.697664] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0
[ 1555.707961] ACPI: Power Button [PWRB]

I've looked around the internet for the PM: Resume from disk failed. message, but this seems to only be important when restoring the system after a hybernate, i.e. restore from the hdd.

But this is not my situation. I only get this after a reboot, as I said before. The timestamp [ 1555.xxxxxx] is only the result of me pressing a key on the keyboard.

Any suggestions on how to proceed? As I am getting stuck on this issue.