Re: mga(4) dual-head setup broken after update

[Tobias Nygren <tnn%NetBSD.org@localhost>]

On Wed, 18 Nov 2009 00:10:34 +0100
Jukka Salmi <j+nbsd%2009.salmi.ch@localhost> wrote:

> updating a NetBSD/i386 5.0_STABLE system with native Xorg (X server
> 1.4.2 -> 1.6.3, mga driver 1.4.8 -> 1.4.11) broke the dual-head setup
> I'm using with my Matrox G450 video card:
> 
> $ startx
> [...]
> (WW) MGA(0): Direct rendering disabled
> (==) RandR enabled
> (EE) MGA(1): Unable to map BAR 0.  Invalid argument (22)
> 
> Fatal server error:
> AddScreen/ScreenInit failed for driver 1
> [...]
> 
> (The full [1]log is available, as is the [2]log from before the update.)
> 
> Any hints about how to fix this?  Single-head works fine, BTW.

Probably delete your configuration, start over with a clean one and use
xrandr(1) to configure the dual-head setup from your ~/.xsession.

This means you lose the ability to use your monitors as separate
screens. For some reason they broke this with 1.5 server, it's
not just an MGA issue.

-Tobias