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0e1f616
(Get the code!)
Hi Barteq,
This hardware issue is most curious. I am afraid I am going to ask some more questions. I've seen reports of Ubuntu working fine on ThinkPad T61's before, so I am a little perplexed by this not working well on your laptop - perhaps it's the specific model of T61 that is causing problems.
What is the exact model of your machine?
Perhaps you may find users of that same machine on the Ubuntu forums where their machine is working correctly just to help verify the issue is perhaps specific to your machine and not generally T61's of your variety.
It seems very strange to me that with ACPI irq configuration you see so many interrupts, yet without ACPI irq configuration the machine is behaves more "normally" in a single user state. I am afraid I am not an expert on specific ACPI issues. Is it possible to revert back to the original BIOS settings to see if this makes the laptop work correctly in the normal ACPI boot mode? Was there any specific reason for you upgrading the BIOS when you first got the laptop?
Do you see the same problem on older kernels or installations of Ubuntu?
Colin