Bug#538800: /usr/bin/xrandr: setting non-existent output as primary resets screen ordering

[Michal Suchanek <hramrach@centrum.cz>]

2009/7/27 Brice Goglin <Brice.Goglin@ens-lyon.org>:
> Michal Suchanek wrote:
>> Package: x11-xserver-utils
>> Version: 7.4+2
>> Severity: normal
>> File: /usr/bin/xrandr
>>
>>
>> In my .xsessionrc I set up the screen layout with xrandr.
>> Because different drivers name the outputs differently I have the
>> commands repeated with different output names.
>>
>> All works fine except for --primary.
>>
>> Setting non-existent output as primary resets the output order to the
>> driver default.
>>
>
> It looks like xrandr is passing the request with the wrong output up to
> the server. Then the server probably clears the primary status before it
> fails to setup the new primary output. So there's no primary output
> anymore. Patch welcome :)

Since the outputs are passed as CARD32 in the request it's probably
xrandr's fault it resolves the string into a number which it passes to
the X server.

The X server validates the number and only proceeds to set the output
if it received what it thinks to be a valid number.

Thanks

Michal