On 29.03.2016 08:47, Julian Margetson wrote: > > Seeing the following when booting kernel 4.6-rc1 on Acube Sam460ex Canyonlands board. > This loops for a few times then the kernel boots. > No problem with the 4.6-rc1 with an A-eon Tabor Freescale e500v2 board. > > Regards > > Julian > > > [ 2.197839] ------------[ cut here ]------------ > [ 2.197850] WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/drm_irq.c:1368 drm_vblank_off+0x2c/0x1e0 That's if (WARN_ON(pipe >= dev->num_crtcs)) My best guess is that drm_vblank_off is called before drm_vblank_init, so dev->num_crtcs is still 0. Please provide the full dmesg output corresponding to the problem. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel