On Tue, Jun 19, 2018 at 08:11:25AM -0400, Frediano Ziglio wrote: > I'm relative new in this group (3 years) compared to these stuff, > some are possibly not in current git repos, but I think that more or > less the history is: > - before multimonitor. No much issues the monitor was the monitor; > - start adding multi monitor support, only one device was used. The > problem was only sending the ID of the monitor which was 0, 1, ... > Added a monitor_config message in the SPICE protocol from server > to client. The client could resize the monitors sending a message > to the agent through the server, server was not involved. As there > was only a QXL device and no other devices there was no reason to send > information for channel/qxl device and monitor IDs matched Xrandr IDs; > > - for some reasons on Windows was not great, somebody decided to use > multiple QXL devices each with one monitor. I believe this is how Windows used to do multimonitor in the winxp/win2k era, it expected to see one pci device per physical display. spice used to handle multimonitor on linux this way too with xinerama. Christophe
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