USB to VGA

[Simon Schampijer]

On 12/09/2010 02:28 PM, Martin Langhoff wrote:
> On Tue, Dec 7, 2010 at 1:24 PM, Kevin Gordon<kgordon420 at gmail.com>  wrote:
>> Both 1.5's with both Startechs, with both monitors:  If the monitor is
>> already turned on, and already plugged into the USB port on the XO 1.5
>> before cold boot, the external monitor becomes active and looks fantastice,
>> every time.  This works on both the Sugar and Gnome boots.  System doesnt
>> seem to care if anyting else has been plugged into the USB port between
>> boots, still comes up first time every time.
>
> Great. Besides looking fantastic, does it work well? ;-)
>
>> Both 1.0's with both Startechs with both monitors:  If the monitor is
>> already turned on, and already plugged into the USB port on the XO 1.0
>> before cold boot, the external monitor becomes active and looks fantastic,
>> most the time.  This is the case on both the Sugar and Gnome boots.  The
>> most the time comes from :  If I have plugged a different USB device into
>> the port between boots, the XO 1.0 stalls at the 'third dot around the
>> circle' during boot and flashes the external monitor.
>
> That is very strange. Can you elaborate on the "a different usb
> device"? Can you give us exact steps to repro?
>
>> I have had absolutely no success in plugging any adapter with any monitor
>> into any of the XO's after XO is up.  LSUSB recognizes the adapter, but
>> doesn't activate the external monitor.
>
> Correct. We cannot reconfigure while running. You can in some cases
> where the 2 video ports are on the same card and you have recent
> drivers. But not inserting a new video device as we do in this case.
>
>> I have had no success in unplugging the adapter while the external monitor
>> is active.  The internal XO display does not come back active, and
>> replugging the external adapter does not bring the external monitor back
>> active.  Oops, now need to Power off again.
>
> Please try this again -- the external monitor will take a few seconds
> but in my testing it does come back.
>
>> Another little note, when the external becomes active when booting the Sugar
>> desktop, the internal display goes blank, once the External goes active.
>> When booting on the Gnome side, the internal display continues to display a
>> sort of console output, but it remains static.
>
> Minor oddity I guess.
>
> thanks for the testing!
>
>
>
> m

Hi Kevin,

thanks for testing. You might as well like to log your findings here: 
http://wiki.laptop.org/go/10.1.3/Testing#USB2VGA_Adapter_usage

Thanks,
    Simon