F16: second monitor is not detected.

Steven F. LeBrun steven at lebruns.com
Thu Nov 17 13:53:03 UTC 2011

On 11/17/2011 01:55 AM, Chris Bredesen wrote:
> On 11/17/2011 10:26 AM, Steven F. LeBrun wrote:
>> Recently updated my laptop to Fedora 16. Fedora 16 is not detecting my
>> second, external, monitor. The Monitor connects with an HDMI connector
>> or a DVI connector through a USB docking station. Connecting it either
>> way does not make a difference. What is strange is that during the boot
>> process, the system will display the flash screen on the second monitor.
>> There was a bug filed about this before Fedora 15 was released. Does
>> this bug still exist in Fedora 16? Does anyone know if any work has been
>> done on it? The bug deals with the Intel Sandybridge chipset. Note that
>> the laptop screen works fine.
>>      OS: Fedora 16 x86_64
>>      Kernel: 3.1.1-1.fc16.x86_64
>>      Desktop: Gnome 3.0.1
>>      System: Dell XPS 15R (i5-2410M CPU @ 2.30GHz x 4)
>>      Graphics: Intel Sandybridge Mobile
>>      Memory: 8 GB
>> Bug:
>> https://bugzilla.kernel.org/show_bug.cgi?id=40592
> Same problem here, no resolution that I have seen.  Plenty of bugs open
> in Fedora complaining of this and related issues:
> https://bugzilla.redhat.com/show_bug.cgi?id=698985
> https://bugzilla.redhat.com/show_bug.cgi?id=680569
> https://bugzilla.redhat.com/show_bug.cgi?id=680333
> https://bugzilla.redhat.com/show_bug.cgi?id=715113
> Love to have some attention on this but I can only guess that not
> everyone is seeing this.  It's the only major usability issue I have
> with Fedora these days but it's a big one.
> I work around the issue by using the keyboard shortcut to toggle to the
> mirrored mode and then once the ext display is up, I can turn off LVDS
> and fix the resolution.
> In related news, you might find that once this is working, it fails to
> wake up after suspend and you have to do the dance again.
> -CB

What is the keyboard shortcut to toggle mirrored mode?  I was not aware 
that there was one.

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