Hi,
I experience a problem with 2.6.38 (mainline) Natty kernel and radeon (OSS) module. There are some creeps in group of some 3-4x1 pixels. There are such a corrupted group every some 2000 pixels or so. It is mostly obvious by plymouth splash screen (because it is rather flat). Anyway, such a corruption isn't there always - eg. with gnome-shell, there is corrupted the area of workspace, but not the windows itself.
The problem disappears when using maverick 2.6.35 kernel. Anyway, I used to observe the problem when using natty 2.6.38 kernel with maverick, so I am pretty sure it is the kernel.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-generic 2.6.38.8.22
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: VT1708S Analog [VT1708S Analog]
Subdevices: 1/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: VT1708S Analog [VT1708S Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: martin 2427 F.... pulseaudio
/dev/snd/pcmC0D0p: martin 2427 F...m pulseaudio
CRDA: Error: [Errno 2] Adresář nebo soubor neexistuje
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xfbcf4000 irq 16'
Mixer name : 'VIA VT1708S'
Components : 'HDA:11060397,10431523,00100000'
Controls : 20
Simple ctrls : 13
Date: Sun Apr 17 13:00:58 2011
EcryptfsInUse: Yes
HibernationDevice: RESUME=LABEL=swap
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
IwConfig: Error: [Errno 2] Adresář nebo soubor neexistuje
MachineType: ASUSTeK Computer INC. K50AB
ProcEnviron:
LANGUAGE=cs_CZ:cs:en
PATH=(custom, user)
LANG=cs_CZ.utf8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-28-generic root=UUID=510ad7c9-18c1-4f04-b3fe-6b63511a0dde ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.35-28-generic N/A
linux-backports-modules-2.6.35-28-generic N/A
linux-firmware 1.50
RfKill: Error: [Errno 2] Adresář nebo soubor neexistuje
SourcePackage: linux
UdevDb: Error: [Errno 2] Adresář nebo soubor neexistuje
UpgradeStatus: Upgraded to natty on 2011-04-16 (0 days ago)
dmi.bios.date: 11/13/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 220
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: K50AB
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 1.00
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTek Computer INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr220:bd11/13/2009:svnASUSTeKComputerINC.:pnK50AB:pvr1.0:rvnASUSTeKComputerINC.:rnK50AB:rvr1.00:cvnASUSTekComputerINC.:ct10:cvr1.0:
dmi.product.name: K50AB
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer INC.
Update - adding radeon.modeset=0 boot option solves the problem but it is not real solution because KMS is really needed I guess (at least for GNOME3 stack). Anyway, the problem remains also in 2.6.39-rc3 (kernel ppa build).