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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1321889

Title:
  Radeon 4550 can't boot without radeon.audio=0 since kernel 3.13

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Hello,
  I have some kind of "any distribution" bugs here it is :
  With every kernel more recent than 3.12 (I haven't still found the exact commit, but the first ubuntu released kernel in which it happens is the 3.13rc1), it seems that the kernel is loaded with radeon.audio=1 by default, and the ATI 4550 (and probably others) can't boot (black screen with frozen system) or only with nomodeset.

  This error is repoductible with any ubuntu version or flavor, and even
  with other distros.

  So to boot any kernel more recent than 3.12 I have to use
  radeon.audio=0 as an argument to boot.

  But the second problem is that now, audio over HDMI is disabled, but I
  have found somewhere a command that make audio over HDMI back :
  "xrandr --output HDMI-0 --set audio on".

  I'm free to answer any question and to help to debug it as much I'm
  skilled enough to do it.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  Uname: Linux 3.13.11-03131102-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  Date: Wed May 21 11:46:10 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] RV710 [Radeon HD 4350/4550] [1002:954f] (prog-if 00 [VGA controller])
     Subsystem: PC Partner Limited / Sapphire Technology Device [174b:e164]
  InstallationDate: Installed on 2014-05-19 (1 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 004: ID 0d8c:0201 C-Media Electronics, Inc. CM6501
   Bus 002 Device 003: ID 046d:c51b Logitech, Inc. V220 Cordless Optical Mouse for Notebooks
   Bus 002 Device 002: ID 045e:0752 Microsoft Corp. Wired Keyboard 400
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: System manufacturer System Product Name
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.11-03131102-generic root=UUID=e6dbe289-d08f-46a5-8b48-a183d6e38d92 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/25/2007
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: ASUS M2N-E SLI ACPI BIOS Revision 0801
  dmi.board.name: M2N-E SLI
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: 1.XX
  dmi.chassis.asset.tag: 123456789000
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSM2N-ESLIACPIBIOSRevision0801:bd04/25/2007:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2N-ESLI:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Wed May 21 11:38:15 2014
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        Microsoft Wired Keyboard 400 KEYBOARD, id 8
   input        Logitech USB Receiver MOUSE, id 9
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.15.1-0ubuntu2
  xserver.video_driver: radeon

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