Bug#976274: libqt5gui5: Please build Qt5 with configure option -xcb-native-painting
Hi Lisandro,
On Mittwoch, 2. Dezember 2020 23:57:00 CET Lisandro Damián Nicanor Pérez Meyer wrote:
> Hi Andre!
>
> El mié., 2 dic. 2020 13:03, Andre Woebbeking <Woebbeking@web.de> escribió:
>
> > Package: libqt5gui5
> > Version: 5.15.1+dfsg-4
> > Severity: wishlist
> > X-Debbugs-Cc: Woebbeking@web.de
> >
> > Dear Maintainer,
> >
> > with X2Go Qt5 apps are much slower than X or GTK apps. But there is a
> > workaround:
> > setting the environment variable QT_XCB_NATIVE_PAINTING.
> >
> > This worked until testing updated to Qt 5.15 because upstream disabled the
> > automatic
> > configuration of this feature in commit
> > 7f948d9effad983477977c3274231401f260c531.
> >
> > So please build Qt5 with -xcb-native-painting to make X2Go users happy
> > again :-)
> >
>
> And what would the drawbacks be?
the compile time and the library size would increase a bit. To get any behaviour change
you've to set QT_XCB_NATIVE_PAINTING.
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