during the execution of the screen saver the system "freeze", don´t responding for any command.

[Cassio]

During the execution of screen saver, after some minutes the system "Freeze", don´t responding for any command, staying with the image of the screen saver stopped in the screen. The only way to resume the system is to restart the computer.
Version do Ubuntu:9.10

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: SI7012 [SiS SI7012], device 0: Intel ICH [SiS SI7012]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: cassio 1556 F.... pulseaudio
CRDA: Error: [Errno 2] Arquivo ou diretório não encontrado
Card0.Amixer.info:
 Card hw:0 'SI7012'/'SiS SI7012 with ALC655 at irq 18'
   Mixer name : 'Realtek ALC655 rev 0'
   Components : 'AC97a:414c4760'
   Controls : 41
   Simple ctrls : 26
Date: Tue Dec 22 07:49:33 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=9734182b-7514-4b49-ba40-965e4c238e08
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.

 ppp0 no wireless extensions.
Package: linux-image-2.6.31-16-generic 2.6.31-16.53
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-16-generic root=UUID=075dbb81-994a-4cbf-9483-db85fc4c59f2 ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-16-generic N/A
 linux-firmware 1.24
RfKill:

SourcePackage: linux
Tags: kernel-oops
Title: WARNING: at /build/buildd/linux-2.6.31/net/sched/sch_generic.c:246 dev_watchdog+0x1f6/0x210()
Uname: Linux 2.6.31-16-generic i686
WifiSyslog:

dmi.bios.date: 05/31/2005
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: SiS-661GX
dmi.chassis.type: 3
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd05/31/2005:svn:pn:pvr:rvn:rnSiS-661GX:rvr:cvn:ct3:cvr:

[mpaq (mipaquet)]

Not exactly the same but very close.
After screen saver and, and times to times (not always "Helas") the monitor freezes on a blanck screen (no signal).
No way to have a new connexion.
Needed to Hard restart the computer (Power off).
Don't see any things interesting in "system's files"

UBUNTU : 9.10
Kernel : 2.6.31-17-generic
cpu : E5400
Moder board : ASUS P5KPL-AM EPU
Graphic Card : Intel 82G33/G31
Graphic sub-system : ASUTeK Device 82b0

[mpaq (mipaquet)]

PS: Key board seems to stay active (leds are actuated and are changing of state normally)
No idea for the mouse off course...

Energy power saver :
Computer "Veille" : never
Screen "Veille" : 30 min

Screen Saver :
Theme : GLMatrix
Computer inactive after : 5 min
Screen saver activated when computer is inactive : Yes

[mpaq (mipaquet)]

Complement :
The computer on which I've this problem is my local lan server.
Last time key board was also freezed.
BUT all server services for the other computers where continuing to work perfectly : Web access, files access, mail services, DNS, etc..
Alas my SSH sever was incorrectly configured on the server and I couldn't connect the server by a other machine. This is resolved now. Next time the server freeze I'll try to connect it from a user and I'll send you the results.

Best regards

Mpq

[mpaq (mipaquet)]

More informations :
connecting from ssh to my server (who was blocked with the screen) : OK
connecting to the server with VNC : NOK (No screen connexion, no password request)
connecting to server with "connect to a server" : OK could navigate trough the folders and "gedit" the .log files (nothing interesting in those files : no specific message when trying to connect/restart the screen, no message when screen begin to be unreachable)
Trying to restart X from ssh : NOK (kill - 9/11 PID ( containing X); startx &)
Tying to restart computer from ssh : OK (sudo shutdown -r now)

Best regards

Mpq

[mpaq (mipaquet)]

New test :
To try to overturn the problem I've change "System""Preferences""Power saving" configuration:

Energy power saver :
Computer "Veille" : never
Screen "Veille" : never

In a terminal :

"xset dpms 0 0 600"

And, the computer seems to stop freezing same if the screen goes into sleep mode (real one, with back-light stop).
I will continue to see if this "overturn" is really stable.

Best regards

MPaq

[Brad Figg (brad-figg)]

This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.