Subject: i915/DRM bug

["Saada, Mehdi" <spermwhale_warrior%hushmail.com@localhost>]

System : Netbsd 6.1.4
Arch : amd-4
pkgsrc: (a few days old)

I can't run properly the X client(xorg as well as modular-xorg
The screen show only the mouse; Or if I start xdm, I can't log under any user's 
name, like all password was false(indeed they are not).
Here's an excerpt of interesting lines of Xorg.0.log
No one outside could help me. I am new with BSD systems, and wasn't neither a 
power user before.
[   187.778] drmOpenDevice: node name is /dev/dri/card0
[   187.778] drmOpenDevice: open result is 13, (OK)
[   187.778] drmOpenByBusid: drmOpenMinor returns 13
[   187.778] drmOpenByBusid: Interface 1.4 failed, trying 1.1
[...] [   187.926] (WW) intel(0): drmDropMaster failed: Unknown error: 
4294967295
[...][   188.686] drmOpenByBusid: Interface 1.4 failed, trying 1.1
[...][   188.797] (EE) AIGLX error: i915 does not export required DRI extension
[   188.805] (EE) AIGLX: reverting to software rendering
[   244.184] (WW) intel(0): drmDropMaster failed: Unknown error: 4294967295
[   256.250] (II) intel(0): [drm] Closed DRM master.

Thanks