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Re: Multimonitor support

From: Fred Kiefer
Subject: Re: Multimonitor support
Date: Sat, 8 Feb 2020 16:09:06 +0100

> Am 08.02.2020 um 15:20 schrieb Riccardo Mottola <address@hidden>:
> On 03/02/2020 21:15, Fred Kiefer wrote:
>> Sergii has written a great patch that will tremendously improve support for 
>> multiple monitors in GNUstep by using the XRandR extension. There is a 
>> downside to it though, this patch will also remove any multi screen support 
>> that was there before without XRandR. So if you have a multi monitor setup 
>> and your system won’t support XRandR we would like to hear from you and try 
>> to find a solution that is acceptable for all sides. I hope that there is 
>> nobody in this specific situation but it seems easier to ask in advance than 
>> to fix it later.
> Sounds great.
> First question - this refers only to X11, right? Multi-Monitor support (or 
> lack of) under windows are unaffected?
> Second question - what was there "before" which would stop working, so which 
> multi-monitor support is "left out" ? A setup to test it.
> Currently I use GNUstep and multi-monitor only in a setup with a Laptop + 
> external screen, which means usually a relatively recent OS. Randr 1.2 has 
> been around almost 10 years. If we don't require more modern features, I 
> probably won't hit these limits. A laptop without xrandr is hard to sue, 
> since only with it the external monitor can be dynamically added/removed.
> My more "esoteric" machines are single-monitor setups. Solaris 7 with two 
> Monitors would be a setup? I don't have setups like that.

The question is now irrelevant. Sergii’s changes have been merged today as 
nobody objected. Please feel free to test what did improve for your laptop 
As I wrote we expect that this get better for everybody. Maybe after a short 
hiccup phase in the beginning. I already had to commit a small fix for Sergii’s 
changes. But as I don’t have a multi monitor setup, I won’t see any of the 

What should be tested now is for example centering a window on a screen. This 
should only take the current monitor into account not the complete virtual 

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