[Intel-gfx] Intel i915 corruption issue Gnome EOG #146

[Chris Wilson]

Quoting Joonas Lahtinen (2020-10-30 10:17:17)
> + intel-gfx mailing list
> 
> Quoting Joonas Lahtinen (2020-10-30 12:15:44)
> > Quoting Jonny Grant (2020-10-27 22:42:19)
> > > Hello Jani, Joonas
> > > 
> > > https://gitlab.gnome.org/GNOME/eog/-/issues/146
> > > 
> > > Is this issue something you could debug?
> > 
> > Can you file a bug according to the instructions here with details
> > about the hardware:
> > 
> > https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs
> > 
> > > I've got some screenshots
> > > 
> > > 
> > > 
> > > Seems to be above 32bit.
> > > 
> > > https://gitlab.gnome.org/GNOME/eog/-/issues/150#note_946421
> > > 
> > > If you don't think it is an i915 issue, could you post a comment?
> > > It only reproduces on intel i915 chipset laptops
> > 
> > Quite a few components are involved, so it might also be a bug in the
> > Mesa 3D side.
> > 
> > An useful excercise would be to figure out the exact pixel width after
> > which the contents is clipped. I noticed one reporting user is using
> > Thinkpad X220, have any users of more modern hardware reported similar
> > issue?

Large pixmap support was dropped from glamor, -modesetting can only
support images up to the HW surface limit. It is a functional
regression.
-Chris