Can you show the glitch as a picture? thanks!
On Sat, Dec 29, 2018 at 10:49:49PM +0100, Frédéric Fauberteau wrote: > Le 2018-12-29 17:23, Frédéric Fauberteau a écrit : > [ 1.0072953] nouveau0: info: DRM: MM: using M2MF for buffer copies > [ 1.0072953] nouveau0: info: DRM: Setting dpms mode 3 on TV encoder > (output 3) > [ 1.0072953] nouveaufb0 at nouveau0 > [ 1.0072953] nouveaufb0: framebuffer at 0xdd454000, size 1680x1050, depth > 32, stride 6912 > [ 1.0072953] wsdisplay0 at nouveaufb0 kbdmux 1: console (default, vt100 > emulation) Last time I had visual glitch it was because nvidia hw needs a high alignment (256 bytes). It looked like: http://i.imgur.com/4f6rFVs.jpg (It was PR 51181) The logic for it was: nouveau_fbcon_create mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3); mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256); Pick resolution with 256 byte alignment (you'll see some more attempts at rounding to fit hw: size = mode_cmd.pitches[0] * mode_cmd.height; size = roundup(size, PAGE_SIZE); I don't think we use this rounding result, so perhaps we should, and I got lucky that the resolution doesn't cause problems) nfa.nfa_fb_linebytes = mode_cmd.pitches[0]; Pass it around.. nouveaufb_attach_task .da_fb_linebytes = nfa->nfa_fb_linebytes, error = drmfb_attach(&sc->sc_drmfb, &da); netbsd code now, make proplib dictionary for genfb drmfb_attach prop_dictionary_set_uint16(dict, "linebytes", da->da_fb_linebytes); genfb_init(&sc->sc_genfb);
