kern/164474: The system couldn't turn on a monitor connected via DisplayPort

Andrey V. Elsukov bu7cher at yandex.ru
Wed Jan 25 10:10:12 UTC 2012


>Number:         164474
>Category:       kern
>Synopsis:       The system couldn't turn on a monitor connected via DisplayPort
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jan 25 10:10:10 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Andrey V. Elsukov
>Release:        FreeBSD 10.0-CURRENT amd64
>Organization:
>Environment:
System: FreeBSD 10.0-CURRENT #1 r230475


	
>Description:
A monitor (HP ZR22w) is connected to the system via displayPort.
When monitor is powered on while system boot, then it works.
Now, if we power off monitor and then turn it on again, it can not find video signal
and doesn't turn on.

vgapci0 at pci0:0:2:0:     class=0x030000 card=0x1494103c chip=0x01028086 rev=0x09 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '2nd Generation Core Processor Family Integrated Graphics Controller'
    class      = display
    subclass   = VGA

	
>How-To-Repeat:
Connect monitor via DisplayPort.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:


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