Thanks to zdz for posting a comment on my T61 Lockups post.
He was absolutely right – it was an Intel / xorg driver issue causing the lockups.
A big shout out to doniphon for updating and testing Xorg at the 20/20 Conference last week. I’m running the latest Xorg on my T61, and the lock-ups are gone!
And I’m still loving the T61. Great Linux support, good form factor, and a great value.
My new T61 laptop is freezing, typically after 5-10 minutes of inactivity, but every once in a while I’m using it. It seems as if I’m actively using it, it won’t freeze up, but soon as I stop, within 5-10 minutes it just hard locks. I’ve used my T61 up to two hours without lock-ups, set it aside, and bam, frozen.
I’ve browsed through the /var/logs/messages file a number of times, but I don’t see anything in the file – just the reboot messages.