On Fri, May 17, 2013 at 09:16:49 +0200, B. Zhang wrote: > I have two alsa-info output for kernel 3.1 and 3.9. Attached. > A diff show me : > ======= > !!Module: snd_usb_audio > - async_unlink : Y > =========== > I found there was a change https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/sound/usb/card.c?id=20d32022a8d8639a33d0e429f2d3c51b527ea362 > after kernel 3.4 > > How you think about this ? That isn't related to the pops you are hearing, the commit just removes a module parameter, and the module parameter was set to the default value. There is quite a bit of changes both in sound/usb and drivers/usb between 3.4 and 3.9. You could try to test with a 3.5 kernel and a 3.8 kernel to narrow down where the problem is coming from. Testing with 3.6 and 3.7 would require that you apply the fix for the "atomic DMA coherent pool is too small" issue. You could also try to reproduce the issue with 3.9 on a different USB host, perhaps on x86 or something that isn't ARM. Torstein > upload=true&script=true&cardinfo= > !!################################ > !!ALSA Information Script v 0.4.61 > !!################################ > > !!Script ran on: Tue Feb 5 23:07:26 UTC 2013 > > > !!Linux Distribution > !!------------------ > > Arch Linux \r (\l) NAME="Arch Linux ARM" ID=archarm ID_LIKE=arch PRETTY_NAME="Arch Linux ARM" HOME_URL="http://archlinuxarm.org/"; SUPPORT_URL="https://archlinuxarm.org/forum"; BUG_REPORT_URL="https://github.com/archlinuxarm/PKGBUILDs/issues"; > > > !!DMI Information > !!--------------- > > Manufacturer: > Product Name: > Product Version: > Firmware Version: > > > !!Kernel Information > !!------------------ > > Kernel release: 3.1.10-15-ARCH > Operating System: GNU/Linux > Architecture: armv5tel > Processor: unknown > SMP Enabled: No > > > !!ALSA Version > !!------------ > > Driver version: 1.0.24 > Library version: 1.0.26 > Utilities version: 1.0.26 > > > !!Loaded ALSA modules > !!------------------- > > snd_usb_audio > > > !!Sound Servers on this system > !!---------------------------- > > Jack: > Installed - Yes (/usr/bin/jackd) > Running - No > > > !!Soundcards recognised by ALSA > !!----------------------------- > > 0 [M20 ]: USB-Audio - M2Tech USB Audio 2.0 > M2Tech M2Tech USB Audio 2.0 at usb-orion-ehci.0-1, high speed > > > !!PCI Soundcards installed in the system > !!-------------------------------------- > > > > !!Advanced information - PCI Vendor/Device/Subsystem ID's > !!------------------------------------------------------- > > > > !!Loaded sound module options > !!--------------------------- > > !!Module: snd_usb_audio > async_unlink : Y > device_setup : 0,0,0,0,0,0,0,0 > enable : Y,Y,Y,Y,Y,Y,Y,Y > id : (null),(null),(null),(null),(null),(null),(null),(null) > ignore_ctl_error : N > index : -1,-1,-1,-1,-1,-1,-1,-1 > nrpacks : 8 > pid : -1,-1,-1,-1,-1,-1,-1,-1 > vid : -1,-1,-1,-1,-1,-1,-1,-1 > > > !!USB Mixer information > !!--------------------- > --startcollapse-- > > USB Mixer: usb_id=0x249c930b, ctrlif=0, ctlerr=0 > Card: M2Tech M2Tech USB Audio 2.0 at usb-orion-ehci.0-1, high speed > Unit: 10 > Control: name="M2Tech Clock Selector Playback Volume", index=1 > Info: id=10, control=2, cmask=0x0, channels=1, type="S16" > Volume: min=-32512, max=0, dBmin=-12700, dBmax=0 > Unit: 10 > Control: name="M2Tech Clock Selector Playback Volume", index=0 > Info: id=10, control=2, cmask=0x3, channels=2, type="S16" > Volume: min=-32512, max=0, dBmin=-12700, dBmax=0 > Unit: 10 > Control: name="M2Tech Clock Selector Playback Switch", index=1 > Info: id=10, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" > Volume: min=0, max=1, dBmin=0, dBmax=0 > Unit: 10 > Control: name="M2Tech Clock Selector Playback Switch", index=0 > Info: id=10, control=1, cmask=0x3, channels=2, type="INV_BOOLEAN" > Volume: min=0, max=1, dBmin=0, dBmax=0 > --endcollapse-- > > > !!ALSA/HDA dmesg > !!-------------- > > > > upload=true&script=true&cardinfo= > !!################################ > !!ALSA Information Script v 0.4.61 > !!################################ > > !!Script ran on: Fri May 17 06:20:10 UTC 2013 > > > !!Linux Distribution > !!------------------ > > Arch Linux \r (\l) NAME="Arch Linux ARM" ID=archarm ID_LIKE=arch PRETTY_NAME="Arch Linux ARM" HOME_URL="http://archlinuxarm.org/"; SUPPORT_URL="https://archlinuxarm.org/forum"; BUG_REPORT_URL="https://github.com/archlinuxarm/PKGBUILDs/issues"; > > > !!DMI Information > !!--------------- > > Manufacturer: > Product Name: > Product Version: > Firmware Version: > > > !!Kernel Information > !!------------------ > > Kernel release: 3.9.2-3-ARCH > Operating System: GNU/Linux > Architecture: armv5tel > Processor: unknown > SMP Enabled: No > > > !!ALSA Version > !!------------ > > Driver version: k3.9.2-3-ARCH > Library version: 1.0.27 > Utilities version: 1.0.27 > > > !!Loaded ALSA modules > !!------------------- > > snd_usb_audio > > > !!Sound Servers on this system > !!---------------------------- > > Jack: > Installed - Yes (/usr/bin/jackd) > Running - No > > > !!Soundcards recognised by ALSA > !!----------------------------- > > 0 [M20 ]: USB-Audio - M2Tech USB Audio 2.0 > M2Tech M2Tech USB Audio 2.0 at usb-orion-ehci.0-1, high speed > > > !!PCI Soundcards installed in the system > !!-------------------------------------- > > > > !!Advanced information - PCI Vendor/Device/Subsystem ID's > !!------------------------------------------------------- > > > > !!Loaded sound module options > !!--------------------------- > > !!Module: snd_usb_audio > device_setup : 0,0,0,0,0,0,0,0 > enable : Y,Y,Y,Y,Y,Y,Y,Y > id : (null),(null),(null),(null),(null),(null),(null),(null) > ignore_ctl_error : N > index : -1,-1,-1,-1,-1,-1,-1,-1 > nrpacks : 8 > pid : -1,-1,-1,-1,-1,-1,-1,-1 > vid : -1,-1,-1,-1,-1,-1,-1,-1 > > > !!USB Mixer information > !!--------------------- > --startcollapse-- > > USB Mixer: usb_id=0x249c930b, ctrlif=0, ctlerr=0 > Card: M2Tech M2Tech USB Audio 2.0 at usb-orion-ehci.0-1, high speed > Unit: 10 > Control: name="M2Tech Clock Selector Playback Volume", index=1 > Info: id=10, control=2, cmask=0x0, channels=1, type="S16" > Volume: min=-32512, max=0, dBmin=-12700, dBmax=0 > Unit: 10 > Control: name="M2Tech Clock Selector Playback Volume", index=0 > Info: id=10, control=2, cmask=0x3, channels=2, type="S16" > Volume: min=-32512, max=0, dBmin=-12700, dBmax=0 > Unit: 10 > Control: name="M2Tech Clock Selector Playback Switch", index=1 > Info: id=10, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" > Volume: min=0, max=1, dBmin=0, dBmax=0 > Unit: 10 > Control: name="M2Tech Clock Selector Playback Switch", index=0 > Info: id=10, control=1, cmask=0x3, channels=2, type="INV_BOOLEAN" > Volume: min=0, max=1, dBmin=0, dBmax=0 > --endcollapse-- > > > !!ALSA Device nodes > !!----------------- > > crw-rw---- 1 root audio 116, 0 May 17 01:39 /dev/snd/controlC0 > crw-rw---- 1 root audio 116, 16 May 17 03:00 /dev/snd/pcmC0D0p > crw-rw---- 1 root audio 116, 1 May 17 01:39 /dev/snd/seq > crw-rw---- 1 root audio 116, 33 May 17 01:39 /dev/snd/timer > > /dev/snd/by-id: > total 0 > drwxr-xr-x 2 root root 60 May 17 01:39 . > drwxr-xr-x 4 root root 160 May 17 01:39 .. > lrwxrwxrwx 1 root root 12 May 17 01:39 usb-M2Tech_M2Tech_USB_Audio_2.0_0000-00 -> ../controlC0 > > /dev/snd/by-path: > total 0 > drwxr-xr-x 2 root root 60 May 17 01:39 . > drwxr-xr-x 4 root root 160 May 17 01:39 .. > lrwxrwxrwx 1 root root 12 May 17 01:39 platform-orion-ehci.0-usb-0:1:1.0 -> ../controlC0 > > > !!ALSA configuration files > !!------------------------ > > !!System wide config file (/etc/asound.conf) > > pcm.!default { > type hw > card 0 > } > > ctl.!default { > type hw > card 0 > } > > > !!Aplay/Arecord output > !!-------------------- > > APLAY > > **** List of PLAYBACK Hardware Devices **** > card 0: M20 [M2Tech USB Audio 2.0], device 0: USB Audio [USB Audio] > Subdevices: 0/1 > Subdevice #0: subdevice #0 > > ARECORD > > **** List of CAPTURE Hardware Devices **** > > !!Amixer output > !!------------- > > !!-------Mixer controls for card 0 [M20] > > Card hw:0 'M20'/'M2Tech M2Tech USB Audio 2.0 at usb-orion-ehci.0-1, high speed' > Mixer name : 'USB Mixer' > Components : 'USB249c:930b' > Controls : 4 > Simple ctrls : 2 > Simple mixer control 'M2Tech Clock Selector',0 > Capabilities: pvolume pswitch > Playback channels: Front Left - Front Right > Limits: Playback 0 - 127 > Mono: > Front Left: Playback 127 [100%] [0.00dB] [on] > Front Right: Playback 127 [100%] [0.00dB] [on] > Simple mixer control 'M2Tech Clock Selector',1 > Capabilities: pvolume pvolume-joined pswitch pswitch-joined > Playback channels: Mono > Limits: Playback 0 - 127 > Mono: Playback 127 [100%] [0.00dB] [on] > > > !!Alsactl output > !!-------------- > > --startcollapse-- > state.M20 { > control.1 { > iface MIXER > name 'M2Tech Clock Selector Playback Switch' > value.0 true > value.1 true > comment { > access 'read write' > type BOOLEAN > count 2 > } > } > control.2 { > iface MIXER > name 'M2Tech Clock Selector Playback Switch' > index 1 > value true > comment { > access 'read write' > type BOOLEAN > count 1 > } > } > control.3 { > iface MIXER > name 'M2Tech Clock Selector Playback Volume' > value.0 127 > value.1 127 > comment { > access 'read write' > type INTEGER > count 2 > range '0 - 127' > dbmin -12700 > dbmax 0 > dbvalue.0 0 > dbvalue.1 0 > } > } > control.4 { > iface MIXER > name 'M2Tech Clock Selector Playback Volume' > index 1 > value 127 > comment { > access 'read write' > type INTEGER > count 1 > range '0 - 127' > dbmin -12700 > dbmax 0 > dbvalue.0 0 > } > } > } > --endcollapse-- > > > !!All Loaded Modules > !!------------------ > > Module > snd_usb_audio > snd_usbmidi_lib > snd_hwdep > snd_pcm > snd_page_alloc > snd_rawmidi > snd_seq_device > snd_timer > snd > soundcore > > > !!ALSA/HDA dmesg > !!-------------- > > > ------------------------------------------------------------------------------ AlienVault Unified Security Management (USM) platform delivers complete security visibility with the essential security capabilities. 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