Loading drm modules causes screen to go blank

[Niclas Zeising]

On 2012-04-23 23:37, Sevan / Venture37 wrote:
> Hi,
> I patched my FreeBSD-HEAD (r234601M) with the all.14.4.patch & built the
> trunk xorg-server early today on my ThinkPad X61s, attempting to startx
> or manually load the i915drm module results in a blank screen,
> the relevant info on my configuaration is up on pastebin
> 
> Xorg.0.log
> http://pastebin.com/mQGyadUV
> 
> pciconf -lvb
> http://pastebin.com/ejVzcvCr
> 
> dmesg
> http://pastebin.com/fjLtTDWQ
> 
> messages from drm in message buffer
> http://pastebin.com/gFFZEN0g
> 
> pkg_info
> http://pastebin.com/kbd0bu33
> 
> Any advice greatly appreciated on what to do next.
> 
> Sevan

Unless things have changed recently, the terminal is disabled when the
drm module(s) are loaded.  It's a FAQ, see
http://wiki.freebsd.org/Intel_GPU , specifically
I cannot switch back to the text console. Or, immediately after loading
the driver, the console went black.
The VT switching code is not implemented (yet). In fact, the real cause
is that driver turns on modesetting right after the load. This way, it
is easier for me to test the driver. Eventually, this will be changed.

Regarding the other issues, I don't know, but
[   596.007] (WW) intel(0): drmDropMaster failed: Unknown error: -22
from your xorg.conf.0 seems suspicious.

HTH!
-- 
Niclas