Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-ati (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1183437
Title:
External display blinks [gallium, radeon, possible power method
related]
Status in “xserver-xorg-video-ati” package in Ubuntu:
Confirmed
Bug description:
External display randomly(?) blinks (it goes black for a second or two and
then resumes :) ) with open source radeon gallium driver on Ubuntu 13.04 64bit
(also 12.04 64bit).
I tested it with two diffrent monitors and a tv.
I think this bug is related to the energy-saving power profiles
I observed that changing power profile to "mid" helps a lot. Blinks are very
rare but they still occur. On other profiles [default, auto, low, high] blinks
occur very often.
WORKAROUND:
To change power profile type as root:
# echo mid > /sys/class/drm/card0/device/power_profile
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8
Uname: Linux 3.8.0-21-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.9.2-0ubuntu8
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: Thu May 23 18:00:22 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Advanced Micro Devices [AMD] nee ATI RV620/M82 [Mobility Radeon HD
3450/3470] [1002:95c4] (prog-if 00 [VGA controller])
Subsystem: Sony Corporation Device [104d:9035]
InstallationDate: Installed on 2013-05-20 (3 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: Sony Corporation VGN-FW11E
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-21-generic
root=UUID=3dea0386-ee43-4455-a881-2a741cd7aeba ro quiet splash pcie_aspm=force
acpi_sleep=nonvs vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/07/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: R0270Y0
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrR0270Y0:bd10/07/2009:svnSonyCorporation:pnVGN-FW11E:pvrC600DCFX:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VGN-FW11E
dmi.product.version: C600DCFX
dmi.sys.vendor: Sony Corporation
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.7-0ubuntu1
xserver.bootTime: Thu May 23 16:17:37 2013
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6
xserver.video_driver: radeon
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