2014-05-09 19:03 GMT+02:00 Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>: > On Fri, May 09, 2014 at 05:14:38PM +0100, Damien Lespiau wrote: >> On Fri, May 09, 2014 at 06:11:37PM +0200, Jörg Otte wrote: >> > > Jörg, can you please boot with drm.debug=0xe, reproduce the issue and >> > > then attach the complete dmesg? Please make sure that the dmesg >> > > contains the boot-up stuff too. >> > > >> > > Thanks, Daniel >> > Here it is. I should mention it only happens at boot-up. >> >> [ 0.374095] [drm] Wrong MCH_SSKPD value: 0x20100406 >> [ 0.374096] [drm] This can cause pipe underruns and display issues. >> [ 0.374097] [drm] Please upgrade your BIOS to fix this. > > That can be a factor, but I think we may have some more general issue > in the modeset sequence which causes these to get reported. I'm getting > some on my machine as well where SSKPD looks more sane. Maybe we turn on > the error reporting too early or something. > > But I'm not going to spend time worrying about these before my previous > watermark stuff gets merged. Also the underrun reporting code itself > would need some kind of rewrite to be really useful. > > If the display doesn't blank out during use everything is more or less > fine and you can ignore these errors. It's quite likely that the > errors were always present and you didn't know it. We just made them > more prominent recently. > > -- > Ville Syrjälä > Intel OTC It comes out on the boot-up screen which is normally clean. So it becomes highly visible for anyone. Thanks, Jörg _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
