I never faced a single problem with multihead with dwm. But I'll try this patch.
I use xrandr.
On 27/09, Hiltjo Posthuma wrote:
>On Fri, Sep 27, 2019 at 03:28:39PM +0200, Sebastian Sareyko wrote:
>> Doing a multi-head setup using other means than Xinerama may lead to
>> XineramaQueryScreens() returning the screens in an order that does not
>> actually represent the actual screen layout. This in turn may result
>> in dwm using the "wrong" monitor in monitor related
>> functions (focusmon(), tagmon(), applying rules, ...).
>>
>> This change sorts the list of unique screens by their horizontal
>> origin to alleviate this problem.
>> The change does not solve (and may even provoke) the described issue
>> when screens are not only placed next to each other in a horizontal
>> way but also vertically.
>> ---
>> dwm.c | 19 +++++++++++++++++++
>> 1 file changed, 19 insertions(+)
>>
>> diff --git a/dwm.c b/dwm.c
>> index 4465af1..a8e9467 100644
>> --- a/dwm.c
>> +++ b/dwm.c
>> _AT_@ -1847,6 +1847,24 @@ updateclientlist()
>> (unsigned char *) &(c->win), 1);
>> }
>>
>> +#ifdef XINERAMA
>> +void
>> +sortscreens(XineramaScreenInfo *screens, int n)
>> +{
>> + int i, j;
>> + XineramaScreenInfo *screen = ecalloc(1, sizeof(XineramaScreenInfo));
>> +
>> + for (i = 0; i < n; i++)
>> + for (j = i + 1; j < n; j++)
>> + if (screens[i].x_org > screens[j].x_org) {
>> + memcpy(&screen[0], &screens[i], sizeof(XineramaScreenInfo));
>> + memcpy(&screens[i], &screens[j], sizeof(XineramaScreenInfo));
>> + memcpy(&screens[j], &screen[0], sizeof(XineramaScreenInfo));
>> + }
>> + XFree(screen);
>> +}
>> +#endif /* XINERAMA */
>> +
>> int
>> updategeom(void)
>> {
>> _AT_@ -1868,6 +1886,7 @@ updategeom(void)
>> memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
>> XFree(info);
>> nn = j;
>> + sortscreens(unique, nn);
>> if (n <= nn) { /* new monitors available */
>> for (i = 0; i < (nn - n); i++) {
>> for (m = mons; m && m->next; m = m->next);
>> --
>> 2.21.0
>>
>>
>
>Have you tried xrandr to reorder the screens? It should probably be solved in a
>different way.
>
>--
>Kind regards,
>Hiltjo
>
Abdullah
https://abdullah.today
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Received on Fri Sep 27 2019 - 15:56:12 CEST