More info below: On May 23, 2011, at 8:39 AM, Jeremy Bush wrote:
> > On May 23, 2011, at 8:32 AM, Wu Fengguang wrote: > >> Hi Jeremy, >> >>> I have my machine hooked up to an Onkyo TX-SR607 7.2-Channel receiver. Yet >>> when the machine boots, HDMI detection mis-detects the hardware on the >>> other end of the HDMI cable: >>> >>> [ 2.090473] HDMI: detected monitor at connection type HDMI >>> [ 2.090475] HDMI: available speakers: FL/FR >>> [ 2.090477] HDMI: supports coding type LPCM: channels = 2, rates = 44100 >>> 48000 88200, bits = 16 >>> [ 2.090480] HDMI hot plug event: Pin=6 Presence_Detect=1 ELD_Valid=1 >> >> That information is filled by BIOS or VBIOS. There are 3 possibilities >> 1) BIOS provides some dumb EDID-Like Data (ELD) regardless of the HDMI sink >> 2) BIOS does not parse EDID correctly >> 3) your TX-SR607 EDID data is broken >> >> I'm writing a drm patch to do ELD for audio in the graphics driver, >> which will address problems caused by (1) and (2). I've done the >> scratch patch, but will need more tests before sending it out. >> >> For now you may still manually correct ELD with this command: >> >> echo speakers 0 > '/proc/asound/card0/eld#3.0' >> >> By clearing the speakers setting, the audio driver will assume your >> HDMI sink supports all speakers. > > > Hrm, just tried that, but speaker-test is still failing: > > htpc ~ # echo speakers 0 > /proc/asound/card1/eld#3.0 > htpc ~ # cat /proc/asound/card1/eld#3.0 > monitor_present 1 > eld_valid 1 > monitor_name > connection_type HDMI > eld_version [0x2] CEA-861D or below > edid_version [0x3] CEA-861-B, C or D > manufacture_id 0x0 > product_id 0x0 > port_id 0x0 > support_hdcp 1 > support_ai 0 > audio_sync_delay 0 > speakers [0x0] > sad_count 1 > sad0_coding_type [0x1] LPCM > sad0_channels 2 > sad0_rates [0xe0] 44100 48000 88200 > sad0_bits [0x20000] 16 > htpc ~ # speaker-test -c 8 -t wav > > speaker-test 1.0.23 > > Playback device is default > Stream parameters are 48000Hz, S16_LE, 8 channels > WAV file(s) > Channels count (8) not available for playbacks: Invalid argument > Setting of hwparams failed: Invalid argument Setting sad0_channels to 8 makes speaker-test work. I'm remoting in via ssh right now, so I'll try more tests when I get home. > >> >>> You can see my whole alsa info (including it actually detecting the >>> hardware can do 7.1 [note Node 0x06 [Pin Complex] wcaps 0x40778d: >>> 8-Channels Digital Amp-Out CP]) here: >>> http://www.alsa-project.org/db/?f=5b55a63fea6580dfcbf1a85c7c734f977df798f1 >> >> This is the Intel HDMI port's audio capability and is always >> 8-channels. In contrast the ELD describes how many speakers (and hence >> channels) are attached to the HDMI sink device (TX-SR607 in your case). >> >>> Is this a known problem? >>> >>> My machine specs are as follows: >>> >>> Intel i3 2100T >>> MSI H67MA-E45 (with Realtek ALC892 audio chip) >>> >>> I'm using HDMI output only. >> >> Will you try the above workaround command first? For the long term >> solution, if you are ready to compile new kernels, I can send you the >> patch for testing. > > I'm running gentoo, so I compile kernels regularly :) > > Jeremy _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
