Re: kern/49363: drm2 GENERIC blank screen after startx Intel G45 graphics X11_TYPE=native

[Soren Jacobsen <snj%NetBSD.org@localhost>]

The following reply was made to PR kern/49363; it has been noted by GNATS.

From: Soren Jacobsen <snj%NetBSD.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: davshao%gmail.com@localhost
Subject: Re: kern/49363: drm2 GENERIC blank screen after startx Intel G45
 graphics X11_TYPE=native
Date: Tue, 4 Nov 2014 23:20:40 -0800

 On 11/05 07:05, davshao%gmail.com@localhost wrote:
 
 > For a Shuttle SG45H7 small form factor system with Intel G45
 > (Eaglelake) graphics, X11_TYPE=native, trying to start xfce4 with
 > startx merely results in a blank screen.  The tail end of
 > /var/log/messages reads:
 > 
 > Nov  4 22:34:27  /netbsd: drm: GMBUS [i915 gmbus vga] timed out, falling back to bit banging on pin 2
 > Nov  4 22:34:27  /netbsd: drm: GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
 > 
 > The machine is connected using a HDMI to DVI connector to a Samsung
 > Syncmaster P2370HD monitor.  X.org in other BSDs such as FreeBSD 10.x
 > and DragonFly have not had a problem with this setup, also, this setup
 > worked fine with NetBSD current prior to the implementation of drm2.
 
 I experienced this same type of failure here with Intel HD 4600
 graphics.  A newer (2.99.916) version of xf86-video-intel took care of
 the issue for me.
 
 Can you drop the following file into /usr/X11R7/lib/modules/drivers and
 see if it makes things any better?
 
 http://ftp.netbsd.org/pub/NetBSD/misc/snj/intel_drv.so
 
 Soren