I've had my HTPC (Asrock Vision HT[1]) connected to my TV via a HDMI cable (Intel HD Graphics 4000 onboard) so far and everything has been working as expected. However, I've now added a receiver (Pioneer SC LX-76[2]) between the PC and the TV, and now audio will only work if the PC is running in a 1080i mode (rather than an 1080p mode). By "work" I mean that the receiver will not recognize that there is a stereo PCM stream being played over the HDMI connection (the "LR" light won't light up, no sound, etc). To try to minimize the variables which might affect this, I've created a basic test system. It boots, starts X and autologins as a newly created user (by nodm[4]). That user has an .xsession which simply runs "exec xterm". There is no /etc/X11/xorg.conf file, no pulseaudio, no .asoundrc file(s), etc... Now, in a separate ssh session to the HTPC, I run "mplayer -ao alsa:device=hw=0.7 test.ogg" (where test.ogg is a 44.1kHz stereo file). Using a second ssh session, I alternate between running: DISPLAY=:0.0 xrandr --output HDMI2 --mode 1920x1080i --rate 30 and DISPLAY=:0.0 xrandr --output HDMI2 --mode 1920x1080 --rate 60 Which reliably allows the receiver to detect the stereo stream (when the interlaced mode is selected) or not (when the progressive mode is selected). The lspci output is included inline below[5]. I've also run the "intel_audio_dump", "intel_infoframes", "intel_reg_dumper" and "alsa-info.sh" utils when the audio is working and when it isn't. The log files are available from my server [3]. For reference, the diff between the two "intel_reg_dumper" outputs is included inline[6]. The kernel is 3.7.3 (from Debian experimental), libdrm is 2.4.40, the xorg intel driver is 2.19.0. I've also tried earlier versions of e.g. the kernel without any success. Suggestions? -- David Härdeman [1] http://www.asrock.com/nettop/overview.us.asp?Model=Vision%20HT%20Series [2] http://www.pioneer.eu/eur/products/42/98/405/SC-LX76-K/specs.html [3] http://david.hardeman.nu/hdmilogs.tar.bz2 [4] http://www.enricozini.org/sw/nodm/ [5] lspci -vvvnnn: 00:1b.0 Audio device [0403]: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller [8086:1e20] (rev 04) Subsystem: ASRock Incorporation Device [1849:1898] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 45 Region 0: Memory at dfe10000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee0f00c Data: 4122 Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us ExtTag- RBE- FLReset+ DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- MaxPayload 128 bytes, MaxReadReq 128 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk- ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt- Capabilities: [100 v1] Virtual Channel Caps: LPEVC=0 RefClk=100ns PATEntryBits=1 Arb: Fixed- WRR32- WRR64- WRR128- Ctrl: ArbSelect=Fixed Status: InProgress- VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans- Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256- Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01 Status: NegoPending- InProgress- VC1: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans- Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256- Ctrl: Enable+ ID=1 ArbSelect=Fixed TC/VC=22 Status: NegoPending- InProgress- Capabilities: [130 v1] Root Complex Link Desc: PortNumber=0f ComponentID=00 EltType=Config Link0: Desc: TargetPort=00 TargetComponent=00 AssocRCRB- LinkType=MemMapped LinkValid+ Addr: 00000000fed1c000 Kernel driver in use: snd_hda_intel [6] diff -Nur 1080i/intel_reg_dumper.log 1080p/intel_reg_dumper.log --- 1080i/intel_reg_dumper.log 2013-01-29 22:23:20.166611170 +0100 +++ 1080p/intel_reg_dumper.log 2013-01-29 22:25:57.906609244 +0100 @@ -11,20 +11,20 @@ DISPLAY_PORT_PLL_BIOS_1: 0x00000000 DISPLAY_PORT_PLL_BIOS_2: 0x00000000 FDI_PLL_FREQ_CTL: 0x00000000 - PIPEACONF: 0xc0600000 (enabled, active, if-id, rotate 0, 8bpc) + PIPEACONF: 0xc0000000 (enabled, active, pf-pd, rotate 0, 8bpc) HTOTAL_A: 0x0897077f (1920 active, 2200 total) HBLANK_A: 0x0897077f (1920 start, 2200 end) HSYNC_A: 0x080307d7 (2008 start, 2052 end) - VTOTAL_A: 0x04630437 (1080 active, 1124 total) - VBLANK_A: 0x04630437 (1080 start, 1124 end) - VSYNC_A: 0x0445043b (1084 start, 1094 end) - VSYNCSHIFT_A: 0x0000038c + VTOTAL_A: 0x04640437 (1080 active, 1125 total) + VBLANK_A: 0x04640437 (1080 start, 1125 end) + VSYNC_A: 0x0440043b (1084 start, 1089 end) + VSYNCSHIFT_A: 0x00000000 PIPEASRC: 0x077f0437 (1920, 1080) - PIPEA_DATA_M1: 0x7e1b30f0 (TU 64, val 0x1b30f0 1782000) - PIPEA_DATA_N1: 0x0020f580 (val 0x20f580 2160000) + PIPEA_DATA_M1: 0x7e3661e0 (TU 64, val 0x3661e0 3564000) + PIPEA_DATA_N1: 0x0041eb00 (val 0x41eb00 4320000) PIPEA_DATA_M2: 0x00000000 (TU 1, val 0x0 0) PIPEA_DATA_N2: 0x00000000 (val 0x0 0) - PIPEA_LINK_M1: 0x0001220a (val 0x1220a 74250) + PIPEA_LINK_M1: 0x00024414 (val 0x24414 148500) PIPEA_LINK_N1: 0x00041eb0 (val 0x41eb0 270000) PIPEA_LINK_M2: 0x00000000 (val 0x0 0) PIPEA_LINK_N2: 0x00000000 (val 0x0 0) @@ -78,20 +78,20 @@ DSPCSURF: 0x00000000 DSPCTILEOFF: 0x00000000 (0, 0) PFA_CTL_1: 0x00000000 (disable, auto_scale yes, auto_scale_cal no, v_filter enable, vadapt disable, mode least, filter_sel programmed,chroma pre-filter disable, vert3tap auto, v_inter_invert field 1) - PFA_CTL_2: 0x00007ef2 (vscale 0.991760) - PFA_CTL_3: 0x00003f79 (vscale initial phase 0.495880) + PFA_CTL_2: 0x00007de4 (vscale 0.983521) + PFA_CTL_3: 0x00003ef2 (vscale initial phase 0.491760) PFA_CTL_4: 0x00007c40 (hscale 0.970703) PFA_WIN_POS: 0x00000000 (0, 0) PFA_WIN_SIZE: 0x00000000 (0, 0) PFB_CTL_1: 0x00000000 (disable, auto_scale yes, auto_scale_cal no, v_filter enable, vadapt disable, mode least, filter_sel programmed,chroma pre-filter disable, vert3tap auto, v_inter_invert field 1) - PFB_CTL_2: 0x00007ef2 (vscale 0.991760) - PFB_CTL_3: 0x00003f79 (vscale initial phase 0.495880) + PFB_CTL_2: 0x00007de4 (vscale 0.983521) + PFB_CTL_3: 0x00003ef2 (vscale initial phase 0.491760) PFB_CTL_4: 0x00007c40 (hscale 0.970703) PFB_WIN_POS: 0x00000000 (0, 0) PFB_WIN_SIZE: 0x00000000 (0, 0) PFC_CTL_1: 0x00000000 (disable, auto_scale yes, auto_scale_cal no, v_filter enable, vadapt disable, mode least, filter_sel programmed,chroma pre-filter disable, vert3tap auto, v_inter_invert field 1) - PFC_CTL_2: 0x00007ef2 (vscale 0.991760) - PFC_CTL_3: 0x00003f79 (vscale initial phase 0.495880) + PFC_CTL_2: 0x00007de4 (vscale 0.983521) + PFC_CTL_3: 0x00003ef2 (vscale initial phase 0.491760) PFC_CTL_4: 0x00007c40 (hscale 0.970703) PFC_WIN_POS: 0x00000000 (0, 0) PFC_WIN_SIZE: 0x00000000 (0, 0) @@ -102,7 +102,7 @@ PCH_SSC4_AUX_PARMS: 0x000029c5 PCH_DPLL_SEL: 0x00000008 (TransA DPLL enable (DPLL A), TransB DPLL disable (DPLL (null))) PCH_DPLL_ANALOG_CTL: 0x00008000 - PCH_DPLL_A: 0xc4080008 (enable, sdvo high speed yes, mode (null), p2 (null), FPA0 P1 4, FPA1 P1 4, refclk default 120Mhz, sdvo/hdmi mul 1) + PCH_DPLL_A: 0xc4020002 (enable, sdvo high speed yes, mode (null), p2 (null), FPA0 P1 2, FPA1 P1 2, refclk default 120Mhz, sdvo/hdmi mul 1) PCH_DPLL_B: 0x04800080 (disable, sdvo high speed no, mode (null), p2 (null), FPA0 P1 8, FPA1 P1 8, refclk default 120Mhz, sdvo/hdmi mul 1) PCH_FPA0: 0x00021007 (n = 2, m1 = 16, m2 = 7) PCH_FPA1: 0x00021007 (n = 2, m1 = 16, m2 = 7) @@ -111,10 +111,10 @@ TRANS_HTOTAL_A: 0x0897077f (1920 active, 2200 total) TRANS_HBLANK_A: 0x0897077f (1920 start, 2200 end) TRANS_HSYNC_A: 0x080307d7 (2008 start, 2052 end) - TRANS_VTOTAL_A: 0x04630437 (1080 active, 1124 total) - TRANS_VBLANK_A: 0x04630437 (1080 start, 1124 end) - TRANS_VSYNC_A: 0x0445043b (1084 start, 1094 end) - TRANS_VSYNCSHIFT_A: 0x0000038c + TRANS_VTOTAL_A: 0x04640437 (1080 active, 1125 total) + TRANS_VBLANK_A: 0x04640437 (1080 start, 1125 end) + TRANS_VSYNC_A: 0x0440043b (1084 start, 1089 end) + TRANS_VSYNCSHIFT_A: 0x00000000 TRANSA_DATA_M1: 0x00000000 (TU 1, val 0x0 0) TRANSA_DATA_N1: 0x00000000 (val 0x0 0) TRANSA_DATA_M2: 0x00000000 (TU 1, val 0x0 0) @@ -153,13 +153,13 @@ TRANSC_DP_LINK_N1: 0x00000000 (val 0x0 0) TRANSC_DP_LINK_M2: 0x00000000 (val 0x0 0) TRANSC_DP_LINK_N2: 0x00000000 (val 0x0 0) - TRANSACONF: 0xc0600000 (enable, active, interlaced) + TRANSACONF: 0xc0000000 (enable, active, progressive) TRANSBCONF: 0x00000000 (disable, inactive, progressive) TRANSCCONF: 0x00000000 (disable, inactive, progressive) - FDI_TXA_CTL: 0x80044b00 (enable, train pattern pattern_1, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing enable, FDI PLL enable, scrambing enable, master mode disable) + FDI_TXA_CTL: 0x800c4b00 (enable, train pattern pattern_1, voltage swing 0.4V,pre-emphasis 0dB, port width X2, enhanced framing enable, FDI PLL enable, scrambing enable, master mode disable) FDI_TXB_CTL: 0x00040000 (disable, train pattern pattern_1, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing enable, FDI PLL disable, scrambing enable, master mode disable) FDI_TXC_CTL: 0x00040000 (disable, train pattern pattern_1, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing enable, FDI PLL disable, scrambing enable, master mode disable) - FDI_RXA_CTL: 0x8c002b50 (enable, train pattern not train, port width X1, 8bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL enable,FS ecc enable, FE ecc disable, FS err report enable, FE err report enable,scrambing enable, enhanced framing enable, PCDClk) + FDI_RXA_CTL: 0x8c082b50 (enable, train pattern not train, port width X2, 8bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL enable,FS ecc enable, FE ecc disable, FS err report enable, FE err report enable,scrambing enable, enhanced framing enable, PCDClk) FDI_RXB_CTL: 0x00000040 (disable, train pattern pattern_1, port width X1, 8bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL disable,FS ecc disable, FE ecc disable, FS err report disable, FE err report disable,scrambing enable, enhanced framing enable, RawClk) FDI_RXC_CTL: 0x00000040 (disable, train pattern pattern_1, port width X1, 8bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL disable,FS ecc disable, FE ecc disable, FS err report disable, FE err report disable,scrambing enable, enhanced framing enable, RawClk) DPAFE_BMFUNC: 0x0001d233 @@ -208,7 +208,7 @@ PCH_PP_DIVISOR: 0x00186904 PORT_DBG: 0x00007007 (HW DRRS off) RC6_RESIDENCY_TIME: 0x15742d40 - RC6p_RESIDENCY_TIME: 0x8bd4d0c4 + RC6p_RESIDENCY_TIME: 0x932ac0ec RC6pp_RESIDENCY_TIME: 0x00000000 GEN6_RP_CONTROL: 0x00000d91 (enabled) GEN6_RPNSWREQ: 0x0e000000 ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. 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