Comment 0 for bug 614238

Alan Lord (theopensourcerer) wrote :

A similar problem with Lucid was reported mainly by users of ATi Radeon graphics hardware. I also experienced the "wavy" output in Lucid, although the graphics h/w is the integrated intel that comes with the Core i3 processors.

It is easy to reproduce. Just plug in an external monitor or projector. The output is not stable/solid and has waves that make it unusable.

I tried the Maverick Alpha3 to see if it had been addressed in the 2.6.35 kernel but the problem is still apparent.

The LCD display of the Laptop is rock solid and sharp. This only affects the external VGA from what I can tell. I do not have any hdmi devices to test with so cannot confirm if the symptoms are just VGA or any external monitor connection.

Similar bug reports from Lucid include: 537640, 541501, 557814, 562138 although these all seem to relate to the ATI chipsets, the description of the problem sounds the same.

I am happy to try upstream kernels and build/patch/compile if necessary.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-14-generic 2.6.35-14.19
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-14.19-generic 2.6.35
Uname: Linux 2.6.35-14-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
 /dev/snd/controlC0: alord 1578 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
 Card hw:0 'Intel'/'HDA Intel at 0xfc700000 irq 46'
   Mixer name : 'Intel IbexPeak HDMI'
   Components : 'HDA:10ec0269,144dc06a,00100004 HDA:80862804,80860101,00100000'
   Controls : 19
   Simple ctrls : 9
Date: Fri Aug 6 07:47:00 2010
HibernationDevice: RESUME=UUID=bc66e046-4afc-4cb6-aa3e-d0f114e960e3
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100803.1)
 Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 003: ID 1210:25f4 DigiTech
 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-14-generic root=UUID=3364d8e7-11e8-4000-a32e-8bfca4cac5aa ro quiet splash
RelatedPackageVersions: linux-firmware 1.37
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux 03/12/2010
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 03JV.M011.20100312.hkk
dmi.board.asset.tag: Tag 12345 R530/R730
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr03JV.M011.20100312.hkk:bd03/12/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR530/R730:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR530/R730:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: R530/R730
dmi.product.version: Not Applicable