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Subject: [Bug 197013] Intel Ironlake in docked Dell E6510 will not display
 external monitor when using new VT
Date: Thu, 22 Jan 2015 23:58:20 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 10.1-RELEASE
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: Affects Some People
X-Bugzilla-Who: dave@pioneerspirits.com
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197013

            Bug ID: 197013
           Summary: Intel Ironlake in docked Dell E6510 will not display
                    external monitor when using new VT
           Product: Base System
           Version: 10.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: dave@pioneerspirits.com

Dell E6510 laptop using Intel Ironlake with agp driver:

vgapci0: <VGA-compatible display> port 0x7110-0x7117 mem
0xf0000000-0xf03fffff,0xe0000000-0xefffffff irq 16 at device 2.0 on pci0
agp0: <Intel Ironlake (M) SVGA controller> on vgapci0
agp0: aperture size is 256M, detected 32764k stolen memory
vgapci0: Boot video device

When docked, my laptop no longer displays using the external monitor. It
freezes with a black screen, white cursor in upper leftmost corner. This
happens right about the time it should display the normal unix login prompt,
right as X11 should launch.

I have to launch in VESA mode for X11 to work properly.

This worked fine in 8.x, 9,x, 10.0. 

Disabling the new VT driver by removing kern.vty=vt from /boot/loader.conf in
FreeBSD fixes the problem, as per another user who corresponded with me via
email.

For PCBSD, removing kern.vty=vt from /boot/loader.conf.pcbsd and remaking the
grub boot fixes the problem on my laptop which is using PCBSD 10.1.1 at the
moment.

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