[ubuntu-za] blank screen with KVM switch

[Gustav H Meyer]

Hi Charl,

I've had the same problem before but forgot the details but it was also not
a USB KVM. The basics that you need, if I rememeber correctly, is to get the
EDID values of your monitor with read-edid and set it manually with xrandr
when you connect the device or something like that. You may have to use
google to find the details.

See also:
http://en.wikipedia.org/wiki/KVM_switch#Monitor_DDC.2FEDID

Regards,
Gustav

On Fri, Dec 3, 2010 at 3:24 PM, Charl Wentzel
<charl.wentzel at vodamail.co.za>wrote:

> Hi Guys
>
> I just swapped my trusty PS/2 KVM for a USB KVM with one unfortunate
> side-effect... when I boot my PC with the screen connected via the KVM I
> get a blank screen.  With the screen connected directly everything
> works.
>
> Now here's the fun part, when I boot with the screen connected directly
> I get my full graphics screen.  I can then plug it in via the KVM and
> continue working as normal.
>
> It seems the KVM prevents Ubuntu from detecting the screen correctly.
> Is there a way to avoid this?  Maybe force Ubuntu to use a specific
> screen driver?
>
> Regards
> Charl
>
>
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> ubuntu-za at lists.ubuntu.com
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>
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