Hi Nathan, > I ran into issues trying to do setup multiple Monitors for an Output, > and sent a mail to the list in September 2016; Aaron Plattner from > NVIDIA responded, noting about the "ConnectionNumber" property from > the xrandr --prop command. The Intel hardware I'm using (Intel > Skylake; Iris Pro Graphics P580 [8086:193d] (rev 09). > > The thread can be viewed here: > > https://lists.x.org/archives/xorg/2016-September/058245.html Thanks for the information, although after a brief read through the linked thread, I'm not certain of the relevance of "ConnectorNumber" to what we're trying to do.
> Jack, let me know if you figure this out, please and thank you! After some further reading of the RandR 1.5 spec, I noticed this tidbit under RRSetMonitor: > For each output in 'info.outputs, each one is removed from all > pre-existing Monitors. If removing the output causes the list of > outputs for that Monitor to become empty, then that Monitor will be > deleted as if RRDeleteMonitor were called. From reading this it seems that it is not possible to have multiple monitor objects sharing the same output, making our use-case impossible (outside of hacks such as fakexinerama). To the wider list, I have to ask: Is this behaviour something that could be amended in a future version of the specification? There are perfectly valid use cases for multiple monitors on a single output (such as the one detailed at the start of this thread). Kind regards, Jack
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