Bug#390359: xserver-xorg-video-i810: dual head config

[EmIScA <emisca@email.it>]

This problem is fixed by a simple patch included in version 1.7.4 of the 
driver.
Look at 
http://gitweb.freedesktop.org/?p=xorg/driver/xf86-video-intel.git;a=commit;h=33c0fac6d63d9a509a24c7a5e5a46a0d6ee4dc5d
and bug #8536 in freedesktop bugzilla.

Please include this and if it's right, merge these bugs.

I've attached the patch against debian xserver-xorg-video-i810-1.7.2-3.

From: Alan Hourihane <alanh@fairlite.demon.co.uk>
Date: Tue, 9 Jan 2007 14:02:47 +0000 (+0000)
Subject: Fix bug #8536, i915 BIOS fails when restarting Xserver.
X-Git-Tag: xf86-video-i810-1.7.4 / xf86-video-intel-1.7.4
X-Git-Url: http://gitweb.freedesktop.org/?p=xorg/driver/xf86-video-intel.git;a=commitdiff;h=33c0fac6d63d9a509a24c7a5e5a46a0d6ee4dc5d

Fix bug #8536, i915 BIOS fails when restarting Xserver.
---

--- a/src/i830_driver.c
+++ b/src/i830_driver.c
@@ -6985,7 +6985,7 @@ IntelEmitInvarientState(ScrnInfoPtr pScr
    I830Ptr pI830 = I830PTR(pScrn);
    CARD32 ctx_addr;
 
-   if (pI830->noAccel)
+   if (pI830->noAccel || !I830IsPrimary(pScrn))
       return;
 
    ctx_addr = pI830->ContextMem.Start;