On Mon, Mar 23, 2009 at 4:20 PM, Alex Deucher <[email protected]> wrote: > On 3/23/09, Russ Dill <[email protected]> wrote: >> On Mon, Mar 23, 2009 at 3:29 PM, Alex Deucher <[email protected]> wrote: >> > On 3/23/09, Russ Dill <[email protected]> wrote: >> >> I have a laptop with an HDMI output. In Vista, I can get the Realtek >> >> HD audio driver to pass audio through the HDMI interface. In Linux, no >> >> amount of fiddling with IEC958 switiches and PCM devices will get >> >> audio to come through the HDMI interface. >> >> >> >> 00:00.0 Host bridge: ATI Technologies Inc RS480 Host Bridge (rev 10) >> >> [...] >> >> 00:14.2 Audio device: ATI Technologies Inc IXP SB4x0 High Definition >> >> Audio Controller (rev 01) >> >> [...] >> >> 01:00.0 VGA compatible controller: ATI Technologies Inc M56P [Radeon >> >> Mobility X1600] >> >> >> >> An alsa developer was thinking that since the video chip interfaces >> >> with the TMDS encoder chip and must somehow be involved. Is anyone >> >> aware of any registers or bits that would enable HDMI audio >> >> pass-through? >> > >> > Native HDMI audio support is only available on RS6xx/R6xx/R7xx chips. >> > I suspect there is either some platform specific magic required in to >> > get it to work (i.e., some external component does the audio/video >> > mixing), or your laptop's oem used an external hdmi encoder. Can you >> > send me your video bios? >> > >> > as root: >> > cd /sys/bus/pci/devices/<pci bus id> >> > echo 1 > rom >> > cat rom > /tmp/vbios.rom >> > echo 0 > rom >> >> >> Attached >> >> > > Looks pretty standard; internal tmds used for hdmi port. I suspect > hdmi audio is implemented via some oem-specific solution. >
Looks like I'll have to do some physical examination. _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
