The audio problems I have are probably more to do with the hardware than the kernel. I'm not even sure audio ever worked at all on this prototype.
Maybe there a re no speakers installed.
Or did you hit the same issue as Michael recently?
aplayer expects a 4-channel audio file. The first two go to the headset and the other two to the handsfree speakers. If you supply a 2-channel audio file, it is not easy to get sound from speakers. The trick (for testing but not for daily use) is to use "play" (sox) to remix the channels.
No, the audio device locks up when you try to access it. Since the same config worked fine on the uevm and the older prototype I assume it's a hardware thing. (or maybe an outdated dts for this board version)
[ 148.488192] wlcore: WARNING no fw rx ba on tid 5 [ 149.881224] systemd-journald[1243]: Failed to set ACL on /var/log/journal/72fa848c254e43918f0d2cec6f529e37/user-1000.journal, ignoring: Operation not supported [ 157.198248] omapdss_hdmi5 58040000.encoder: ASoC: can't open interface 58040000.encoder: -1 [ 157.207604] omapdss_hdmi5 58040000.encoder: ASoC: can't open interface 58040000.encoder: -1 [ 157.221599] omapdss_hdmi5 58040000.encoder: ASoC: can't open interface 58040000.encoder: -1 [ 157.261201] Unhandled fault: asynchronous external abort (0x1211) at 0x00000000 [ 157.268884] pgd = a941098e [ 157.271725] [00000000] *pgd=a9193003, *pmd=00000000 [ 157.276861] Internal error: : 1211 [#1] PREEMPT SMP ARM [ 157.282342] Modules linked in: snd_soc_dmic snd_soc_omap_abe_twl6040 snd_soc_twl6040 ctr ccm arc4 wl18xx wlcore binfmt_misc mac80211 cfg80211 dwc3 leds_gpio wwan_on_off snd_soc_omap_hdmi_audio generic_adc_battery wlcore_sdio snd_soc_ts3a227e leds_is31fl319x ip6t_REJECT nf_reject_ipv6 bq27xxx_battery_i2c bq27xxx_battery nf_log_ipv6 ina2xx bq2429x_charger twl6040_vibra xt_hl ip6t_rt bmc150_accel_i2c bmg160_i2c bmp280_i2c palmas_gpadc bmc150_accel_core bmp280 usb3503 bmg160_core at24 w2cbw003_bluetooth bmc150_magn_i2c bmc150_magn industrialio_triggered_buffer kfifo_buf bno055 snd_soc_omap_mcbsp snd_soc_omap_mcpdm snd_soc_omap snd_pcm_dmaengine nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack [ 157.357527] ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ecryptfs encrypted_keys sunrpc ip_tables x_tables ipv6 autofs4 encoder_tpd12s015 connector_hdmi ehci_omap dwc3_omap tca8418_keypad tsc2007 as5013 industrialio gpio_twl6040 palmas_pwrbutton [ 157.388898] CPU: 0 PID: 2335 Comm: pulseaudio Not tainted 4.15.0-rc8-letux-lpae-pyra-e #4 [ 157.397483] Hardware name: Generic OMAP5 (Flattened Device Tree) [ 157.403791] PC is at omap_mcpdm_open_streams+0x18/0x50 [snd_soc_omap_mcpdm] [ 157.411104] LR is at omap_mcpdm_dai_startup+0x30/0x40 [snd_soc_omap_mcpdm] [ 157.418317] pc : [<bf26a074>] lr : [<bf26a2f8>] psr: 600a0013 [ 157.424892] sp : e919fd50 ip : 00000000 fp : ea8f2800 [ 157.430377] r10: 00000001 r9 : e9a29c5c r8 : e9a295c4 [ 157.435858] r7 : e9a295c0 r6 : ea8ef800 r5 : ec80eb50 r4 : ec80eb60 [ 157.442703] r3 : f2c83000 r2 : 00000a0a r1 : 00000000 r0 : ec80eb50 [ 157.449554] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 157.457046] Control: 30c5387d Table: a90a0680 DAC: fffffffd [ 157.463078] Process pulseaudio (pid: 2335, stack limit = 0x43c21b08) [ 157.469738] Stack: (0xe919fd50 to 0xe91a0000) [ 157.474308] fd40: e9a29000 eaab3800 ea8ef800 c075ab7c [ 157.482891] fd60: e99c7400 0000000b 00000008 00000009 0000000d c0747724 000f4240 e9a295c4 [ 157.491476] fd80: 0000000b e9a2900c 00000001 00000000 e919fdc8 e91ea840 e9a29c48 e919e000 [ 157.500061] fda0: e9a29c5c 00000001 e919e000 c0747958 e9a29800 eaab3800 e91ea840 00000000 [ 157.508648] fdc0: e9a29800 c0747a44 07400038 00000000 e9f11880 c024b9c4 e9a29c60 e9a29c60 [ 157.517228] fde0: e9a29800 00000000 e91ea840 c08b5ba0 e91ea840 e90c8d00 00000000 c0747bac [ 157.525816] fe00: edb82300 00000000 e9a3a670 c033d254 e9a3a670 00000038 e91ea840 e9a3a670 [ 157.534396] fe20: 00000000 c033d110 e91ea848 c03367dc e919fed0 00000002 00000000 e91ea840 [ 157.542985] fe40: e9a3a670 00000000 00000000 c0347804 efe39840 a0030013 c032351c e9152de0 [ 157.551569] fe60: 00000000 e919ff74 00000000 00000802 60030013 ed26b000 00000041 00000006 [ 157.560154] fe80: 00000000 a0060013 00000000 00000002 e9a3a670 edb3d810 ea286440 e9200d00 [ 157.568732] fea0: bef9d534 e992a000 40045532 00000012 e919ff74 00000001 ffffff9c c0207004 [ 157.577320] fec0: e919e000 00000000 81204101 c03479dc edb3d810 ea286440 def0283c 00000008 [ 157.585902] fee0: ead69019 c0e30238 00000000 ed4b9b28 e9a3a670 00000101 00000002 00000506 [ 157.594489] ff00: 00000000 00000000 00000000 e919ff10 0006297c 00000ff0 bef9d684 ead69010 [ 157.603067] ff20: bef9d684 c0508630 00000012 e9e5db18 e9e5db00 e9e5db40 00080802 c0354784 [ 157.611648] ff40: ead69000 00000000 00080802 00000002 ffffff9c c0207004 00000012 00080802 [ 157.620228] ff60: ead69000 c033758c 00000000 e91ea900 e91ea900 00000802 bef90000 00000006 [ 157.628807] ff80: 00000100 00000001 00000000 00000000 ffffffff 00000004 00000005 c0207004 [ 157.637391] ffa0: e919e000 c0206e20 00000000 ffffffff bef9d684 00080802 00404000 00575198 [ 157.645978] ffc0: 00000000 ffffffff 00000004 00000005 bef9d560 b174b394 bef9d684 81204101 [ 157.654562] ffe0: 00000000 bef9d538 00000000 b6bd7752 000a0030 bef9d684 ffffffff 00000000 [ 157.663172] [<bf26a074>] (omap_mcpdm_open_streams [snd_soc_omap_mcpdm]) from [<bf26a2f8>] (omap_mcpdm_dai_startup+0x30/0x40 [snd_soc_omap_mcpdm]) [ 157.676845] [<bf26a2f8>] (omap_mcpdm_dai_startup [snd_soc_omap_mcpdm]) from [<c075ab7c>] (soc_pcm_open+0x88/0x840) [ 157.687699] [<c075ab7c>] (soc_pcm_open) from [<c0747958>] (snd_pcm_open_substream+0x48/0x90) [ 157.696545] [<c0747958>] (snd_pcm_open_substream) from [<c0747a44>] (snd_pcm_open+0xa4/0x1d0) [ 157.705486] [<c0747a44>] (snd_pcm_open) from [<c0747bac>] (snd_pcm_capture_open+0x3c/0x5c) [ 157.714148] [<c0747bac>] (snd_pcm_capture_open) from [<c033d254>] (chrdev_open+0x144/0x15c) [ 157.722901] [<c033d254>] (chrdev_open) from [<c03367dc>] (do_dentry_open+0x1fc/0x328) [ 157.731113] [<c03367dc>] (do_dentry_open) from [<c0347804>] (path_openat+0xda0/0xf48) [ 157.739321] [<c0347804>] (path_openat) from [<c03479dc>] (do_filp_open+0x30/0x78) [ 157.747165] [<c03479dc>] (do_filp_open) from [<c033758c>] (do_sys_open+0xe8/0x1b0) [ 157.755097] [<c033758c>] (do_sys_open) from [<c0206e20>] (ret_fast_syscall+0x0/0x4c) [ 157.763216] Code: e3822901 e5832044 e3002a0a e583202c (e5902034) [ 157.769609] ---[ end trace d93c1003275c81b1 ]---