So for my own sanities sake let me give numbers to the symptoms Symptom #1: CPU spikes, which over time, evenutally turn into a continual stream of user and system time. Eventually the cpu will never spin down from MAX. Kernels present in: 2.6.15-23, 2.6.15-25 Kernels NOT present in: 2.6.12-9
Symptom #2: Holycrap the system is unusably slow. I can type faster than my terminal window can keep up with me. Opening a window causes the video to be so slow I can watch it paint Kernels present in: 2.6.15-25 Kernels NOT present in: 2.6.15-23, 2.6.12-9 I can confirm that if I boot the 2.12.15-23 kernel with ACPI=off, symptom #1 goes away. If I boot the 2.12.15-25 kernel with ACPI=off, both symptom #1 and #2 goes away. So this makes my laptop usable again. Yay! Except it's a plugged-in- only laptop now.. Since all of the battery management doesn't work, and the cpu is stuck at max. I looked at the differences for the lspci, and the only difference is the wireless card (I have the ABG card) -0000:04:02.0 Network controller: Intel Corporation PRO/Wireless 2915ABG MiniPCI Adapter (rev 05) +0000:04:02.0 Network controller: Intel Corporation PRO/Wireless 2200BG (rev 05) the lsmod is pretty different. I will attach both. ** Attachment added: "T43 with problem lspci" http://librarian.launchpad.net/3096595/t43-with-problem-lspci ** Attachment added: "T43 with problem lsmod" http://librarian.launchpad.net/3096596/t43-with-problem-lsmod -- Thinkpad T43 2.6.15-23/25, system slow to use due to CPU spikes https://launchpad.net/bugs/50024 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs