Public bug reported:
I am using a Thinkpad T410s with a Dell 2711 connected via DisplayPort.
Attached to the monitor, there is my speakers that I can use to listen
to music that is transmitted via DisplayPort (or HDMI). Starting with
Ubuntu 12.04, Ubuntu can transmit audio via DP.
However, when going into standby - either via inactivity timeout or via
closing the lid - I hear horrible sound garbage.
This is quite loud and can possibly damage speakers and/or ears,
depending on the sound level of whatever I heard before.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12
Uname: Linux 3.2.0-20-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.0-0ubuntu2
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Sat Mar 31 12:42:13 2012
DistUpgraded: 2011-12-03 14:26:18,327 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
MachineType: LENOVO 29123AG
ProcEnviron:
TERM=xterm
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic
root=UUID=b9fb2d9e-d248-4294-bd6b-9abe27dfcea4 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: Upgraded to precise on 2011-12-03 (118 days ago)
dmi.bios.date: 05/10/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 6UET64WW (1.44 )
dmi.board.name: 29123AG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr6UET64WW(1.44):bd05/10/2011:svnLENOVO:pn29123AG:pvrThinkPadT410s:rvnLENOVO:rn29123AG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 29123AG
dmi.product.version: ThinkPad T410s
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.7.2-0ubuntu4
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20111201+b5534a1-1build2
** Affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 precise reproducible ubuntu
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https://bugs.launchpad.net/bugs/969940
Title:
When going into standby, DP monitor emits horrible noises via attached
speakers
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