Hi, I'm relatively new to the ports list but I can confirm I have also had this issue with an AMD system with integrated HD 4250 graphics. On the 6.6 release I solved it by turning the compositor off in XFCE. On my new OpenBSD current system I used the fix mentioned in the XFCE pkg-readme to force use of XPresent for vblank. This seems to persist over a reboot.
Regards Ed Gray On Thu, 7 May 2020 at 14:36, Amit Kulkarni <amit.o...@gmail.com> wrote: > On Thu, May 7, 2020 at 1:25 AM Landry Breuil <lan...@openbsd.org> wrote: > > > > On Thu, May 07, 2020 at 08:14:56AM +0200, Landry Breuil wrote: > > > On Wed, May 06, 2020 at 10:43:14PM -0500, Amit Kulkarni wrote: > > > > Hi, > > > > > > > > Since about the last couple of days or so, the firefox display keeps > flickering every 5-7 seconds on a plain install of Xfce desktop.It looks > like the title bar of the browser keeps on turning off and then on. > > > > > > > > Is it just me or does it happen with anybody else with xfce ? > > > > This does not happen with firefox in fvwm. > > > > > > probably related to the xfwm4 update in > > > https://marc.info/?l=openbsd-ports-cvs&m=158840312213950&w=2 (see > > > https://mail.xfce.org/pipermail/xfce-announce/2020-May/000856.html), > > > flickering is usually due to xpresent being used or not for > vblank_mode. > > > (see /usr/local/share/doc/pkg-readmes/xfce where this is documented). > > > > More specifically for AMD, this is probably related to > > > https://gitlab.xfce.org/xfce/xfwm4/commit/7c00911a556c27c57c9f719c12cfda967016dc28 > > which stops prefering xpresent on those chips, cf > > https://bugzilla.xfce.org/show_bug.cgi?id=16716 > > > > Thanks for the confirmation. > >
