Sound output fails

[Heinrich Schuchardt]

I am running Ubuntu Lunar on the LicheeRV dock with a loudspeaker connected.

The 'aplay -l' command shows that a playback device exists:

# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sun20icodec [sun20i-codec], device 0: sun20i-codec snd-soc-dummy-dai-0 [sun20i-codec snd-soc-dummy-dai-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

But playback fails:

$ sudo aplay PinkPanther30.wav
Playing WAVE 'PinkPanther30.wav' : Signed 16 bit Little Endian, Rate 22050 Hz, Mono
aplay: pcm_write:2127: write error: Input/output error

Best regards

Heinrich

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: linux-image-5.19.0-1009-allwinner 5.19.0-1009.9
ProcVersionSignature: Ubuntu 5.19.0-1009.9-allwinner 5.19.17
Uname: Linux 5.19.0-1009-allwinner riscv64
ApportVersion: 2.26.1-0ubuntu2
Architecture: riscv64
CasperMD5CheckResult: unknown
CloudArchitecture: riscv64
CloudBuildName: server
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSerial: 20230415.1
CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud-net)
Date: Sat May 6 18:37:23 2023
ProcCpuinfoMinimal:
 processor : 0
 hart : 0
 isa : rv64imafdc
 mmu : sv39
 uarch : thead,c906
ProcEnviron:
 LANG=C.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=vt220
SourcePackage: linux-allwinner
UpgradeStatus: No upgrade log present (probably fresh install)

[Heinrich Schuchardt (xypron)]

After several successful calls in file alsa-lib/src/pcm/pcm.c, function snd_pcm_hw_writei()

   ioctl(fd, SNDRV_PCM_IOCTL_WRITEI_FRAMES, &xferi)

returns an error EIO with fd pointing to /dev/snd/pcmC0D0p.

[Heinrich Schuchardt (xypron)]

As the error message seems to be created on the last frame, the main question is why there is not sound output at all.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.