Hi,

I have a T21 as well, and I have found that ACPI is buggy with this laptop. Ditto for the 2.6 kernel, so I have used a custom 2.4.27 with APM with excellent results. Make sure you get the cpufreq patch (for recompling the 2.4 kernel), tpb, thinkpad-base, thinkpad source for the thinkpad modules, and tpctl for additional power savings for your laptop. If you want 3d acceleration, you'll need to compile your xfree server to xfree86-DRI from cvs. IIRC, the recent kernels compiled by Klaus are compiled with acpi so you may/will have to compile your own kernel if you want suspend/resume to work. There is a patch for acpi for ibm laptops called ibm-acpi that I just recently found about in another forum on gmane. This patch supposedly works great for 2.6 kernels and acpi, so you might want to google for the link to get more information about this.

HTH,

Durand