• Jiri Jaburek's avatar
    ALSA: usb-audio: extend KEF X300A FU 10 tweak to Arcam rPAC · d70a1b98
    Jiri Jaburek authored
    The Arcam rPAC seems to have the same problem - whenever anything
    (alsamixer, udevd, 3.9+ kernel from 60af3d03, ..) attempts to
    access mixer / control interface of the card, the firmware "locks up"
    the entire device, resulting in
      SNDRV_PCM_IOCTL_HW_PARAMS failed (-5): Input/output error
    from alsa-lib.
    Other operating systems can somehow read the mixer (there seems to be
    playback volume/mute), but any manipulation is ignored by the device
    (which has hardware volume controls).
    Cc: <stable@vger.kernel.org>
    Signed-off-by: default avatarJiri Jaburek <jjaburek@redhat.com>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
mixer_maps.c 13.4 KB