Public bug reported:
using radeon KMS I get jittery/ wavy output on the external monitor(photo). It
seems like the DAC or something is not configured correctly. Booting with
nomodeset resolves this issue. So I guess it is just some quirk missing in the
kernel DRM.
Note that the logs were created while booted with nomodeset.
ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: pavel 1559 F.... pulseaudio
/dev/snd/controlC0: pavel 1559 F.... pulseaudio
/dev/snd/pcmC0D0p: pavel 1559 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xee400000 irq 17'
Mixer name : 'Analog Devices AD1981'
Components : 'HDA:11d41981,17aa2025,00100200'
Controls : 20
Simple ctrls : 11
Card1.Amixer.info:
Card hw:1 'U0x46d0x8da'/'USB Device 0x46d:0x8da at usb-0000:00:1d.2-1, full
speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:08da'
Controls : 3
Simple ctrls : 2
Date: Fri Mar 19 12:41:30 2010
DistroRelease: Ubuntu 10.04
Frequency: Once a day.
HibernationDevice: RESUME=UUID=52312151-e549-443c-bd19-39438aa7bda5
MachineType: LENOVO 2007FVG
Package: linux-image-2.6.32-16-generic 2.6.32-16.25
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic
root=UUID=676597c8-7f07-49ee-a686-91e35e29a053 ro quiet splash nomodeset
ProcEnviron:
LANG=de_DE.utf8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
Regression: Yes
RelatedPackageVersions: linux-firmware 1.32
Reproducible: No
SourcePackage: linux
TestedUpstream: No
Uname: Linux 2.6.32-16-generic i686
WpaSupplicantLog:
dmi.bios.date: 09/12/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 79ETE3WW (2.23 )
dmi.board.name: 2007FVG
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:bvr79ETE3WW(2.23):bd09/12/2008:svnLENOVO:pn2007FVG:pvrThinkPadT60p:rvnLENOVO:rn2007FVG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2007FVG
dmi.product.version: ThinkPad T60p
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 lucid needs-upstream-testing regression-potential
--
radeon KMS: jittery output with dual head
https://bugs.launchpad.net/bugs/541834
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