[AT&T, Rogers HTC One X, Telstra One XL] drubin333:
Here you go. You can see it recognizes that the headphones get plugged in. But hitting the volume buttons doesn't seem to do anything.

build.board: evita

build.bootloader: 2.14.0000

build.brand: htc

build.cpu_abi: armeabi-v7a

build.cpu_abi2: armeabi

build.device: evita

build.display: cm_evita-userdebug 4.3 JSS15J eng.h8rift.20130814.062603 test-keys

build.fingerprint: cingular_us/evita/evita:4.1.1/JRO03C/131981.6:user/release-keys

build.hardware: qcom

build.host: Shanes-MacBook-Pro.local

build.id: JSS15J

build.manufacturer: HTC

build.model: One X

build.product: htc_evita

build.radio: unknown

build.serial: HT25XW307741

build.tags: test-keys

build.time: 1376479669000

build.type: userdebug

build.user: h8rift

version.codename: REL

version.incremental: 79936

version.release: 4.3

version.sdk_int: 18

08-18 08:10:22.838 D/ALSAStreamOps(239): setParameters(): keyRouting with device 0x2

08-18 08:10:22.838 D/ALSAStreamOps(239): setParameters(): keyRouting with device 0x2

08-18 08:10:22.838 D/ALSADevice(239): route: devices 0x2 in mode 0

08-18 08:10:22.838 D/ALSADevice(239): No valid input device: 0

08-18 08:10:22.838 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _disdev value Headphones

08-18 08:10:22.838 D/alsa_ucm(239): disdev: device Headphones not enabled, no need to disable

08-18 08:10:22.838 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _enadev value Speaker

08-18 08:10:22.838 D/ALSADevice(239): switchDevice: mCurTxUCMDevivce None mCurRxDevDevice Speaker

08-18 08:10:22.858 D/ALSADevice(239): route: devices 0x2 in mode 0

08-18 08:10:22.858 D/ALSADevice(239): No valid input device: 0

08-18 08:10:22.858 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _enadev value Speaker

08-18 08:10:22.858 D/ALSADevice(239): switchDevice: mCurTxUCMDevivce None mCurRxDevDevice Speaker

08-18 08:10:22.858 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _verb value HiFi

08-18 08:10:22.858 D/alsa_ucm(239): Set mixer controls for Speaker enable 1

08-18 08:10:22.858 D/alsa_ucm(239): acdb_id 15 cap 1 enable 1

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> send_audio_cal, acdb_id = 15, path = 0

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> send_adm_topology

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_COMMON_TOPOLOGY_ID

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> send_audtable

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_COMMON_TABLE

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AUDPROC_CAL

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> send_audvoltable

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_GAIN_DEP_VOLTBL_STEP_COPP

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AUDPROC_VOL_CAL

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> send_afe_cal

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AFE_COMMON_TABLE

08-18 08:10:22.858 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AFE_CAL

08-18 08:10:22.858 D/alsa_ucm(239): Setting mixer control: SLIM_0_RX Channels, value: One

08-18 08:10:22.858 D/alsa_ucm(239): Setting mixer control: RX3 MIX1 INP1, value: RX1

08-18 08:10:22.868 D/alsa_ucm(239): Setting mixer control: RX4 DSM MUX, value: DSM_INV

08-18 08:10:22.878 D/alsa_ucm(239): Setting mixer control: LINEOUT1 Volume, value: 73

08-18 08:10:22.878 D/alsa_ucm(239): Setting mixer control: LINEOUT3 Volume, value: 73

08-18 08:10:22.878 D/alsa_ucm(239): Setting mixer control: RX3 Digital Volume, value: 73

08-18 08:10:22.878 D/alsa_ucm(239): Setting mixer control: RX4 Digital Volume, value: 73

08-18 08:10:22.878 D/alsa_ucm(239): Setting mixer control: SPK AMP EN Switch, value: 1

08-18 08:10:22.888 D/alsa_ucm(239): Set mixer controls for HiFi enable 1

08-18 08:10:22.888 D/alsa_ucm(239): Setting mixer control: SLIMBUS_0_RX Audio Mixer MultiMedia1, value: 1

08-18 08:10:22.888 D/ALSADevice(239): close: handle 0xb7c932d0 h 0x0

08-18 08:10:22.888 D/ALSADevice(239): open: handle 0xb7c932d0, format 0x2

08-18 08:10:22.888 D/ALSADevice(239): Device value returned is hw:0,0

08-18 08:10:22.888 D/ALSADevice(239): handle->format: 0x2

08-18 08:10:22.888 D/ALSADevice(239): setHardwareParams: reqBuffSize 2048 channels 2 sampleRate 48000

08-18 08:10:22.898 D/ALSADevice(239): setHardwareParams: buffer_size 16384, period_size 2048, period_cnt 8

08-18 08:10:26.022 D/ALSADevice(239): standby: handle 0xb7c932d0 h 0x0

08-18 08:10:26.202 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _verb value Inactive

08-18 08:10:26.202 D/alsa_ucm(239): Set mixer controls for HiFi enable 0

08-18 08:10:26.202 D/alsa_ucm(239): Setting mixer control: SLIMBUS_0_RX Audio Mixer MultiMedia1, value: 0

08-18 08:10:26.202 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _disdev value Speaker

08-18 08:10:26.202 D/alsa_ucm(239): Set mixer controls for Speaker enable 0

08-18 08:10:26.202 D/alsa_ucm(239): Setting mixer control: SPK AMP EN Switch, value: 0

08-18 08:10:26.202 D/alsa_ucm(239): Setting mixer control: LINEOUT1 Volume, value: 0

08-18 08:10:26.202 D/alsa_ucm(239): Setting mixer control: LINEOUT3 Volume, value: 0

08-18 08:10:26.202 D/alsa_ucm(239): Setting mixer control: RX3 Digital Volume, value: 0

08-18 08:10:26.202 D/alsa_ucm(239): Setting mixer control: RX4 Digital Volume, value: 0

08-18 08:10:26.202 D/alsa_ucm(239): Setting mixer control: RX4 DSM MUX, value: CIC_OUT

08-18 08:10:26.202 D/alsa_ucm(239): Setting mixer control: RX3 MIX1 INP1, value: ZERO

08-18 08:10:26.202 D/AudioUsbALSA(239): exitPlaybackThread, mproxypfdPlayback: -1

08-18 08:10:26.202 D/AudioUsbALSA(239): closeDevice handle 0x0

08-18 08:10:26.202 D/AudioUsbALSA(239): closeDevice handle 0x0

08-18 08:10:29.305 V/WiredAccessoryManager(563): Headset UEVENT: {SUBSYSTEM=switch, SWITCH_STATE=2, DEVPATH=/devices/virtual/switch/h2w, SEQNUM=3742, ACTION=change, SWITCH_NAME=Headset}

08-18 08:10:29.305 V/WiredAccessoryManager(563): newName=Headset newState=2 headsetState=2 prev headsetState=0

08-18 08:10:29.305 V/WiredAccessoryManager(563): device Headset connected

08-18 08:10:29.315 W/AudioPolicyManagerALSA(239): checkOutputsForDevice() could not open output for device 8

08-18 08:10:29.315 W/AudioPolicyManagerALSA(239): checkOutputsForDevice() could not open output for device 8

08-18 08:10:29.315 W/AudioPolicyManagerALSA(239): checkOutputsForDevice() could not open output for device 8

08-18 08:10:29.325 I/HeadsetService(1222): Headset=true; Bluetooth=false

08-18 08:10:29.335 I/HeadsetService(1222): Selected configuration: headset

08-18 08:10:42.129 E/AudioPolicyManagerALSA(239): unknown stream type

08-18 08:10:42.129 E/AudioPolicyManagerALSA(239): unknown stream type

08-18 08:10:42.129 E/AudioPolicyManagerALSA(239): unknown stream type

08-18 08:10:42.129 E/AudioPolicyManagerALSA(239): unknown stream type

08-18 08:10:42.129 E/AudioPolicyManagerALSA(239): unknown stream type

08-18 08:10:42.129 E/AudioPolicyManagerALSA(239): unknown stream type

08-18 08:10:42.129 E/AudioPolicyManagerALSA(239): unknown stream type

08-18 08:10:42.129 E/AudioPolicyManagerALSA(239): unknown stream type

08-18 08:10:42.179 D/dalvikvm(706): GC_FOR_ALLOC freed 7470K, 56% free 11016K/24936K, paused 73ms, total 87ms

08-18 08:10:42.409 D/ALSAStreamOps(239): setParameters(): keyRouting with device 0x8

08-18 08:10:42.409 D/ALSAStreamOps(239): setParameters(): keyRouting with device 0x8

08-18 08:10:42.409 D/ALSADevice(239): route: devices 0x8 in mode 0

08-18 08:10:42.409 D/ALSADevice(239): No valid input device: 0

08-18 08:10:42.409 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _disdev value Speaker

08-18 08:10:42.409 D/alsa_ucm(239): disdev: device Speaker not enabled, no need to disable

08-18 08:10:42.409 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _enadev value Headphones

08-18 08:10:42.409 D/ALSADevice(239): switchDevice: mCurTxUCMDevivce None mCurRxDevDevice Headphones

08-18 08:10:42.429 D/ALSADevice(239): route: devices 0x8 in mode 0

08-18 08:10:42.429 D/ALSADevice(239): No valid input device: 0

08-18 08:10:42.429 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _enadev value Headphones

08-18 08:10:42.429 D/ALSADevice(239): switchDevice: mCurTxUCMDevivce None mCurRxDevDevice Headphones

08-18 08:10:42.429 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _verb value HiFi

08-18 08:10:42.429 D/alsa_ucm(239): Set mixer controls for Headphones enable 1

08-18 08:10:42.429 D/alsa_ucm(239): acdb_id 10 cap 1 enable 1

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> send_audio_cal, acdb_id = 10, path = 0

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> send_adm_topology

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_COMMON_TOPOLOGY_ID

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> send_audtable

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_COMMON_TABLE

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AUDPROC_CAL

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> send_audvoltable

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_GAIN_DEP_VOLTBL_STEP_COPP

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AUDPROC_VOL_CAL

08-18 08:10:42.429 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AFE_CAL

08-18 08:10:42.429 D/alsa_ucm(239): Setting mixer control: SLIM_0_RX Channels, value: Two

08-18 08:10:42.429 D/alsa_ucm(239): Setting mixer control: RX1 MIX1 INP1, value: RX1

08-18 08:10:42.439 D/alsa_ucm(239): Setting mixer control: RX2 MIX1 INP1, value: RX2

08-18 08:10:42.439 D/alsa_ucm(239): Setting mixer control: HPHL DAC Switch, value: 1

08-18 08:10:42.439 D/alsa_ucm(239): Setting mixer control: RX1 Digital Volume, value: 67

08-18 08:10:42.439 D/alsa_ucm(239): Setting mixer control: RX2 Digital Volume, value: 67

08-18 08:10:42.439 D/alsa_ucm(239): Setting mixer control: HPHL Volume, value: 60

08-18 08:10:42.439 D/alsa_ucm(239): Setting mixer control: HPHR Volume, value: 60

08-18 08:10:42.439 D/alsa_ucm(239): Set mixer controls for HiFi enable 1

08-18 08:10:42.439 D/alsa_ucm(239): Setting mixer control: SLIMBUS_0_RX Audio Mixer MultiMedia1, value: 1

08-18 08:10:42.439 D/ALSADevice(239): close: handle 0xb7c932d0 h 0x0

08-18 08:10:42.439 D/ALSADevice(239): open: handle 0xb7c932d0, format 0x2

08-18 08:10:42.439 D/ALSADevice(239): Device value returned is hw:0,0

08-18 08:10:42.449 D/ALSADevice(239): handle->format: 0x2

08-18 08:10:42.449 D/ALSADevice(239): setHardwareParams: reqBuffSize 2048 channels 2 sampleRate 48000

08-18 08:10:42.449 D/ALSADevice(239): setHardwareParams: buffer_size 16384, period_size 2048, period_cnt 8

08-18 08:10:42.619 D/dalvikvm(4566): GC_CONCURRENT freed 3336K, 42% free 6259K/10680K, paused 3ms+15ms, total 80ms

08-18 08:10:45.613 D/ALSADevice(239): standby: handle 0xb7c932d0 h 0x0

08-18 08:10:45.813 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _verb value Inactive

08-18 08:10:45.813 D/alsa_ucm(239): Set mixer controls for HiFi enable 0

08-18 08:10:45.813 D/alsa_ucm(239): Setting mixer control: SLIMBUS_0_RX Audio Mixer MultiMedia1, value: 0

08-18 08:10:45.813 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _disdev value Headphones

08-18 08:10:45.813 D/alsa_ucm(239): Set mixer controls for Headphones enable 0

08-18 08:10:45.813 D/alsa_ucm(239): Setting mixer control: HPHL Volume, value: 0

08-18 08:10:45.813 D/alsa_ucm(239): Setting mixer control: HPHR Volume, value: 0

08-18 08:10:45.813 D/alsa_ucm(239): Setting mixer control: RX1 Digital Volume, value: 0

08-18 08:10:45.813 D/alsa_ucm(239): Setting mixer control: RX2 Digital Volume, value: 0

08-18 08:10:45.813 D/alsa_ucm(239): Setting mixer control: HPHL DAC Switch, value: 0

08-18 08:10:45.813 D/alsa_ucm(239): Setting mixer control: RX1 MIX1 INP1, value: ZERO

08-18 08:10:45.813 D/alsa_ucm(239): Setting mixer control: RX2 MIX1 INP1, value: ZERO

08-18 08:10:45.813 D/AudioUsbALSA(239): exitPlaybackThread, mproxypfdPlayback: -1

08-18 08:10:45.813 D/AudioUsbALSA(239): closeDevice handle 0x0

08-18 08:10:45.813 D/AudioUsbALSA(239): closeDevice handle 0x0

08-18 08:10:47.625 D/dalvikvm(4566): GC_FOR_ALLOC freed 1510K, 49% free 5488K/10680K, paused 24ms, total 27ms

08-18 08:10:47.665 D/ALSADevice(239): route: devices 0x8 in mode 0

08-18 08:10:47.665 D/ALSADevice(239): No valid input device: 0

08-18 08:10:47.665 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _enadev value Headphones

08-18 08:10:47.665 D/ALSADevice(239): switchDevice: mCurTxUCMDevivce None mCurRxDevDevice Headphones

08-18 08:10:47.665 D/alsa_ucm(239): snd_use_case_set(): uc_mgr 0xb7c4dfc8 identifier _verb value HiFi

08-18 08:10:47.665 D/alsa_ucm(239): Set mixer controls for Headphones enable 1

08-18 08:10:47.665 D/alsa_ucm(239): acdb_id 10 cap 1 enable 1

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> send_audio_cal, acdb_id = 10, path = 0

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> send_adm_topology

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_COMMON_TOPOLOGY_ID

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> send_audtable

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_COMMON_TABLE

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AUDPROC_CAL

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> send_audvoltable

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> ACDB_CMD_GET_AUDPROC_GAIN_DEP_VOLTBL_STEP_COPP

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AUDPROC_VOL_CAL

08-18 08:10:47.665 D/ACDB-LOADER(239): ACDB -> AUDIO_SET_AFE_CAL

08-18 08:10:47.665 D/alsa_ucm(239): Setting mixer control: SLIM_0_RX Channels, value: Two

08-18 08:10:47.665 D/alsa_ucm(239): Setting mixer control: RX1 MIX1 INP1, value: RX1

08-18 08:10:47.675 D/alsa_ucm(239): Setting mixer control: RX2 MIX1 INP1, value: RX2

08-18 08:10:47.675 D/alsa_ucm(239): Setting mixer control: HPHL DAC Switch, value: 1

08-18 08:10:47.675 D/alsa_ucm(239): Setting mixer control: RX1 Digital Volume, value: 67

08-18 08:10:47.675 D/alsa_ucm(239): Setting mixer control: RX2 Digital Volume, value: 67

08-18 08:10:47.675 D/alsa_ucm(239): Setting mixer control: HPHL Volume, value: 60

08-18 08:10:47.675 D/alsa_ucm(239): Setting mixer control: HPHR Volume, value: 60

08-18 08:10:47.675 D/alsa_ucm(239): Set mixer controls for HiFi enable 1

08-18 08:10:47.675 D/alsa_ucm(239): Setting mixer control: SLIMBUS_0_RX Audio Mixer MultiMedia1, value: 1

08-18 08:10:47.675 D/ALSADevice(239): close: handle 0xb7c932d0 h 0x0

08-18 08:10:47.675 D/ALSADevice(239): open: handle 0xb7c932d0, format 0x2

08-18 08:10:47.675 D/ALSADevice(239): Device value returned is hw:0,0

08-18 08:10:47.685 D/ALSADevice(239): handle->format: 0x2

08-18 08:10:47.685 D/ALSADevice(239): setHardwareParams: reqBuffSize 2048 channels 2 sampleRate 48000

08-18 08:10:47.685 D/ALSADevice(239): setHardwareParams: buffer_size 16384, period_size 2048, period_cnt 8