On Mon, Oct 7, 2013 at 8:45 AM, Jethro Beekman <dri-devel@xxxxxxxxxxx> wrote: > On 06-10-13 15:00, Dave Airlie wrote: >> On Mon, Oct 7, 2013 at 7:04 AM, Jethro Beekman <dri-devel@xxxxxxxxxxx> wrote: >>> Even with Dave Airlie's recent patch set ( >>> http://lists.freedesktop.org/archives/dri-devel/2013-August/042854.html ), I'm >>> still having trouble getting HDMI audio to work on my optimus laptop. I'm >>> running Linux 3.12.0-rc3 on a Lenovo ThinkPad T420s. When I set my BIOS graphics >>> option to 'Discrete', I get the following two devices in lspci: >>> >>> 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [Quadro NVS 4200M] >>> (rev a1) >>> 01:00.1 Audio device: NVIDIA Corporation HDMI Audio stub (rev a1) >>> >>> When I set the option to 'Optimus', the 01:00.1 device disappears completely. >>> This is dmesg when loading nouveau in the Optimus configuration: >>> >>> pci 0000:01:00.0: optimus capabilities: enabled, status dynamic power, hda bios >>> codec supported >>> VGA switcheroo: detected Optimus DSM method \_SB_.PCI0.PEG_.VID_ handle >>> [drm] hdmi device not found 1 0 1 >>> >>> I modified snd-hda-intel to report which devices it's probing, this is the only >>> one that shows up: >>> >>> hda-intel: azx_probe: 0000:00:1b.0 >>> >>> Any ideas what's going on? >> >> Wierd, I wonder does it route the codecs via the other device, though >> I can't remember how to see what codecs are available. > > /proc/asound/card0/ lists only a single codec which is for analog i/o. > >> The other thing would be to try and hack on the hdmi stub using the >> code in my patches that does it after s/r but do it at startup. > > Could you be a little more specific? I tried moving nouveau_get_hdmi_dev() later > so we have drm->device setup and then adding the 'do magic' nv_mask() call > before that. That's either not working or something more needs to happen to make > it work. yeah doing the do magic might not work though since Linux would have to rescan the PCI bus for the hdmi driver to detect it, I wonder can you poke registers from grub, or maybe geneate some sort of pci hotplug even so the other layers notice. Dave. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
