i have the same error, except my system hangs. i just reported this to bugs@, you may want to keep an eye there:
https://marc.info/?l=openbsd-bugs&m=142590300129925&w=2 On Fri, 6 Mar 2015 14:21:03 -0500 (EST) Charlie <c...@devio.us> wrote: > Hi, > > I run OpenBSD 5.6-stable on a Lenovo x201 (patched to the latest errata - > 016). I use XFCE as my desktop environment. Every so often when I am > moving a window, specifically trying to snap it to the left-hand side of > my screen, X freezes up for a few seconds, and the following message is > printed to the console: > > error: [drm:pid31847:i915_hangcheck_hung] *ERROR* Hangcheck timer > elapsed... GPU hung > error: [drm:pid31847:i915_hangcheck_hung] *ERROR* Hangcheck timer > elapsed... GPU hung > error: [drm:pid31975:i915_reset] *ERROR* GPU hanging too fast, declaring > wedged! > error: [drm:pid31975:i915_reset] *ERROR* Failed to reset chip. > > After this occurs, everything continues working, but X is laggy, > especially in certain applications. The best fix I've found is to reboot > the system. > > This appears to be the only relevant entry from /var/log/Xorg.0.log: > > [ 62471.544] (EE) intel(0): Detected a hung GPU, disabling acceleration. > > If I can provide any further information that might lead to fixing this > problem, I will be happy to do so. > > Thank you! > > Charlie