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[Raymond <1530142@xxxxxxxxxxxxxxxxxx>]

0.728657] [drm:r600_ring_test] *ERROR* radeon: ring 0 test failed (scratch(0x850C)=0xCAFEDEAD) 
[ 18.728660] [drm:si_resume] *ERROR* si startup failed on resume 
[ 19.878088] [drm:si_dpm_set_power_state] *ERROR* si_upload_sw_state failed 



[ 8192.226320] playback write error (DMA or IRQ trouble?)
 [ 8202.234132] playback write error (DMA or IRQ trouble?)


You have to open upstream bug report at bugzilla.kernel.org. driver sound/ Alsa

** Changed in: alsa-driver (Ubuntu)
       Status: Confirmed => Incomplete

** Summary changed:

- [Inspiron 5559, Realtek ALC255, Speaker, Internal] No sound at all
+ [Inspiron 5559, Realtek ALC255, Speaker, Internal] No sound at all playback write error (DMA or IRQ trouble?)

-- 
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https://bugs.launchpad.net/bugs/1530142

Title:
  [Inspiron 5559, Realtek ALC255, Speaker, Internal] No sound at all
  playback write error (DMA or IRQ trouble?)

Status in alsa-driver package in Ubuntu:
  Incomplete

Bug description:
  No sound, either on headphones or internal speakers.  Have been all
  over forums, tried every fix I can find.  The installation is new, and
  it's on a new Dell 5559.

  Sound is not muted, and I believe the settings are correct, but it's
  hard to be sure, as each answer I find seems to have slightly
  differing advice, albeit a lot in common.

  Would be really helpful if your best and most complete FAQ answers
  were locked in one place, sorted by Ubuntu release:  otherwise there's
  no way to tell which helpful suggestions/solutions are really correct.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
  Uname: Linux 3.13.0-74-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  john       2107 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Dec 30 14:25:38 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-12-24 (6 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
  Symptom_AlsaPlaybackTestStderr:
   W r i t e   e r r o r :   - 5 , I n p u t / o u t p u t   e r r o r 
    x r u n _ r e c o v e r y   f a i l e d :   - 5 , I n p u t / o u t p u t   e r r o r 
    T r a n s f e r   f a i l e d :   I n p u t / o u t p u t   e r r o r
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_DevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  john       2107 F.... pulseaudio
  Symptom_Jack: Speaker, Internal
  Symptom_Type: No sound at all
  Title: [Inspiron 5559, Realtek ALC255, Speaker, Internal] No sound at all
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/16/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.0.6
  dmi.board.name: 0664DJ
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr1.0.6:bd09/16/2015:svnDellInc.:pnInspiron5559:pvr:rvnDellInc.:rn0664DJ:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Inspiron 5559
  dmi.sys.vendor: Dell Inc.

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