Gnome won't show screen saver unlock, clock-applet high cpu

[Harald Rudell]

Binary package hint: gnome-panel

On return to my computer, the screen saver unlock is not displayed
instead, the screen is black with only a mouse cursor that can be moved
ssh in to the machine and top shows:
PID USR PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1305 root 20 0 686m 312m 21m R 98 9.0 110:05 Xorg
2395 foxyboy 20 0 351m 10m 5768 S 60 0.3 21.33.10 clock-applet
...

kill the clock-applet process 2395, and the screen saver login appears
Gnome shows: "Clock" has quit unexpectedly

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-28.49-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 260.19.06 Mon Sep 13 04:29:19 PDT 2010
 GCC version: gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5)
Architecture: amd64
Date: Sat Mar 19 15:24:37 2011
DkmsStatus:
 nvidia-current, 260.19.06, 2.6.32-26-generic, x86_64: built
 nvidia-current, 260.19.06, 2.6.35-24-generic, x86_64: installed
 nvidia-current, 260.19.06, 2.6.35-27-generic, x86_64: installed
 nvidia-current, 260.19.06, 2.6.35-28-generic, x86_64: installed
 nvidia-current, 260.19.06, 2.6.35-23-generic, x86_64: installed
MachineType: System manufacturer System Product Name
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-28-generic root=UUID=6e418107-84af-4790-b047-0df1e3d0f0bf ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
Xrandr:
 Error: command ['xrandr', '--verbose'] failed with exit code 1: Xlib: extension "RANDR" missing on display ":0.0".
 RandR extension missing
dmi.bios.date: 05/25/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1208
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5Q-EM DO
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1208:bd05/25/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5Q-EMDO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
system:
 distro: Ubuntu
 codename: maverick
 architecture: x86_64
 kernel: 2.6.35-28-generic

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please answer these questions:

 * Is this reproducible?
 * If so, what specific steps should we take to recreate this bug?

 This will help us to find and resolve the problem.

[Launchpad Janitor (janitor)]

[Expired for gnome-screensaver (Ubuntu) because there has been no activity for 60 days.]

[Harald Rudell (harald-rudell)]

This still happens. Different gnome-panel apps that do frequent redraw lock sup their thread and Xorg with high cpu: xclock eyes sensors-applet

[Harald Rudell (harald-rudell)]

Every month or so it occurs (a system, that is never shut down) What I do is that I ssh in from another box and kill the high-load process. If I can't find out which one it is (happened once), I restart X.

I think it is related to that I have an nVidia Quadro NVS 450 with three displays and Ubuntu 11.04 effectively stopped supporting more than one display. X or GPU gets confused and draws in the wrong rectangle. A window might update on display 1 but is all black on display 2. This was all good on 10.10

[Harald Rudell (harald-rudell)]

killall gnome-panel is also effective