With a kernel before 3.13 (first included in Ubuntu trusty) the HDMI output is not enabled by default in the open source driver. Please, check that you're using the kernel parameter radeon.audio=1 during boot, or add it to your grub configuration.
** Changed in: xserver-xorg-video-ati (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1268229 Title: not HDMI output option (audio) xserver-xorg-video-ati (1:7.2.0-0ubuntu10) Status in “xserver-xorg-video-ati” package in Ubuntu: Incomplete Bug description: With non-free driver fglrx I have the option. I have tried alternative sources (PPA) and they have the same problem. Description: Ubuntu 13.10 Release: 13.10 xserver-xorg-video-ati (1:7.2.0-0ubuntu10) ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: xserver-xorg-video-ati 1:7.2.0-0ubuntu10 ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Sun Jan 12 01:04:37 2014 DistUpgraded: Fresh install DistroCodename: saucy DistroVariant: ubuntu DkmsStatus: virtualbox, 4.2.16, 3.11.0-15-generic, x86_64: installed GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde XT [Radeon HD 7770 GHz Edition] [1002:683d] (prog-if 00 [VGA controller]) Subsystem: PC Partner Limited / Sapphire Technology Device [174b:e244] InstallationDate: Installed on 2014-01-10 (1 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) LightdmGreeterLog: ** (process:7376): WARNING **: Failed to open sessions directory: Error opening directory '/usr/share/lightdm/sessions': No such file or directory file:///usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/main.qml:135: Unable to assign [undefined] to QString usersession LightdmGreeterLogOld: ** (process:5871): WARNING **: Failed to open sessions directory: Error opening directory '/usr/share/lightdm/sessions': No such file or directory file:///usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/main.qml:135: Unable to assign [undefined] to QString usersession MachineType: MSI MS-7640 MarkForUpload: True ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=dbd92065-6644-4e70-ab93-bb5447147959 ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-ati UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/08/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V19.9 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: 990FXA-GD65 (MS-7640) dmi.board.vendor: MSI dmi.board.version: 3.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 3.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV19.9:bd10/08/2012:svnMSI:pnMS-7640:pvr3.0:rvnMSI:rn990FXA-GD65(MS-7640):rvr3.0:cvnMSI:ct3:cvr3.0: dmi.product.name: MS-7640 dmi.product.version: 3.0 dmi.sys.vendor: MSI version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.46-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2~saucy1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1 xserver.bootTime: Sun Jan 12 00:18:37 2014 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Power Button KEYBOARD, id 7 input Logitech USB Optical Mouse MOUSE, id 8 input LITEON Technology USB Multimedia Keyboard KEYBOARD, id 9 input LITEON Technology USB Multimedia Keyboard KEYBOARD, id 10 xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.14.5-1ubuntu2~saucy1 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1268229/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp