Hi, Mutter should already handle falling back on plain mode sets if flipping failed. I'd suggest opening a issue (on https://gitlab.gnome.org/GNOME/mutter/issues/new) with reproduction steps etc. A question however (to answer in the reported issue) is why a subsequent mode flip fixes things if the first one failed to too little video RAM?
Jonas On Thu, Sep 06, 2018 at 11:43:46AM +0200, Michael Thayer via gnome-shell-list wrote: > Hello, > > Hans (on CC) asked me to file a bug for this, but I wanted to ask on the > mailing list first in case I am misreading the code. We have been > looking at a problem where GNOME Shell on a VirtualBox guest with the > Additions video driver becomes unusable when a mode set operation fails > (due to too little video RAM allocated). A further successful mode set > cures things. It seems to me that this is due to Mutter failing to > check the return value of meta_gpu_kms_flip_crtc() and assuming that the > mode set succeeded. Does that sound likely? In case it is helpful to > know, the video driver still does not support either atomic or page flips. > > Regards > Michael > -- > Michael Thayer | VirtualBox engineer > ORACLE Deutschland B.V. & Co. KG | Werkstr. 24 | D-71384 Weinstadt > > ORACLE Deutschland B.V. & Co. KG > Hauptverwaltung: Riesstraße 25, D-80992 München > Registergericht: Amtsgericht München, HRA 95603 > > Komplementärin: ORACLE Deutschland Verwaltung B.V. > Hertogswetering 163/167, 3543 AS Utrecht, Niederlande > Handelsregister der Handelskammer Midden-Nederland, Nr. 30143697 > Geschäftsführer: Alexander van der Ven, Jan Schultheiss, Val Maher > pub rsa3072 2018-06-26 [SC] [expires: 2019-06-26] > 00474F6447A79D8998B7542123F0CF2E68CC7371 > uid Michael Thayer <michael.tha...@oracle.com> > sub rsa3072 2018-06-26 [E] [expires: 2019-06-26] > _______________________________________________ > gnome-shell-list mailing list > gnome-shell-list@gnome.org > https://mail.gnome.org/mailman/listinfo/gnome-shell-list _______________________________________________ gnome-shell-list mailing list gnome-shell-list@gnome.org https://mail.gnome.org/mailman/listinfo/gnome-shell-list
