Fwd: Re: user visible monitor hotplug events

Aaron Plattner aplattner at nvidia.com
Mon Oct 24 14:49:18 PDT 2011

On 10/24/2011 02:39 PM, Kai-Uwe Behrmann wrote:
> Am 24.10.2011 13:26, schrieb Aaron Plattner:
>> On 10/24/2011 07:45 AM, Kai-Uwe Behrmann wrote:
>>> what's the way to get monitor hotplug events in a user desktop session?
>>> I want to setup ICC profiles during monitor connections and
>>> deconnections. Currently this is done inside Compiz. But I want to put
>>> the setup code into a speperate application. Ideally this application
>>> would be called on demand.
>>> Is DBus the right thing to register to? If yes, how?
>> RandR generates events when outputs change states.  You should listen
>> for those events:
>> http://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt?id=randrproto-1.3.2#n326
> I read this from a nvidia developer. Does that mean XRandR-1.3 is going
> to be supported soon in the nvidia driver?

It's supported in the Tegra driver.

>>> Code examples are welcome too if any.
>> Michael Thayer's changes to xev to make it print the events might be a
>> good place to start.
>> http://cgit.freedesktop.org/xorg/app/xev/commit/?id=7965bc6efbf5db244593735bbb98f0ffa759cd1a
> This means, the setup application needs to stay active all the time like
> a daemon, which I initially hoped to can circumvent.


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