I have seen similar. The Xorg will spontaneously crash. My trigger is 'gnumeric':
Launch gnumeric (might crash from just this) Move around worksheet (or it might wait until this) Modify a cell (might survive until here) Switch to another worksheet (ad nauseum) etc. Sometimes it will survive its initial encounter with 'gnumeric', but will crash much later. As I use 'gnumeric' regularly, it's difficult to test whether it will crash without that trigger. The X server usually crashes with "SIGSEGV" (logged in Xorg.0.log.old), but doesn't leave a core dump. One time it got "SIGALARM" and left a core dump. The affected machine was likewise equipped with Intel integrated graphics (G41) with the xf86-video-intel driver and SNA acceleration. Up until that point it had been rock solid. I'd been suspecting hardware beginning to fail, but your post would suggest otherwise. It's been a couple of months since this started and I've switched to an older, smaller, slower machine w/radeon video in the meantime. I couldn't afford having SSH sessions broken due to X crashing. I think I've seen similar using -current with the xf86-video-intel-2014 driver (needed to get working SNA acceleration on my HW). I don't recall any changes to 8.1 that should have affected X-on-intel like this. -- |/"\ John D. Baker, KN5UKS NetBSD Darwin/MacOS X |\ / jdbaker[snail]consolidated[flyspeck]net OpenBSD FreeBSD | X No HTML/proprietary data in email. BSD just sits there and works! |/ \ GPGkeyID: D703 4A7E 479F 63F8 D3F4 BD99 9572 8F23 E4AD 1645