** Tags added: bios-outdated-1.15c -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/620455
Title: System time drifts when idle Status in The Linux Kernel: Invalid Status in “linux” package in Ubuntu: Incomplete Bug description: It seems the system time stops when my notebook goes idle. By idle, I don't mean suspend or screen lock. But this is best described by the following script : #!/bin/bash # set hwclock to system clock to start # the log file with the same time hwclock -w #start with a fresh logfile touch clocktest.log echo START > clocktest.log while [[ true ]] do systime=$(date) hwtime=$(hwclock -r) echo "$systime | $hwtime" >> clocktest.log sleep 20 done Expected output : On each line, the system time should be roughly the same. Time delta between each line should be around 20 seconds Observed output : Sorry for the 80 character column wrap. See the edited clocktest.log for a cleaner ouput. Look at the following logfile : START jeudi 19 août 2010, 15:09:43 (UTC+0200) | jeu. 19 août 2010 15:09:44 CEST -0.500555 secondes jeudi 19 août 2010, 15:10:04 (UTC+0200) | jeu. 19 août 2010 15:10:05 CEST -1.001562 secondes jeudi 19 août 2010, 15:10:25 (UTC+0200) | jeu. 19 août 2010 15:10:26 CEST -0.985944 secondes jeudi 19 août 2010, 15:10:46 (UTC+0200) | jeu. 19 août 2010 15:15:46 CEST -0.032792 secondes <-- 5 minute lag ! jeudi 19 août 2010, 15:11:06 (UTC+0200) | jeu. 19 août 2010 15:16:07 CEST -0.985926 secondes jeudi 19 août 2010, 15:11:27 (UTC+0200) | jeu. 19 août 2010 15:16:28 CEST -1.001539 secondes jeudi 19 août 2010, 15:11:48 (UTC+0200) | jeu. 19 août 2010 15:16:49 CEST -0.985969 secondes jeudi 19 août 2010, 15:12:09 (UTC+0200) | jeu. 19 août 2010 15:17:10 CEST -0.985977 secondes jeudi 19 août 2010, 15:12:30 (UTC+0200) | jeu. 19 août 2010 15:17:31 CEST -1.001544 secondes jeudi 19 août 2010, 15:12:51 (UTC+0200) | jeu. 19 août 2010 15:17:52 CEST -0.985920 secondes jeudi 19 août 2010, 15:13:12 (UTC+0200) | jeu. 19 août 2010 15:18:13 CEST -0.985939 secondes jeudi 19 août 2010, 15:13:33 (UTC+0200) | jeu. 19 août 2010 15:18:34 CEST -1.001581 secondes jeudi 19 août 2010, 15:13:54 (UTC+0200) | jeu. 19 août 2010 15:18:55 CEST -0.985917 secondes jeudi 19 août 2010, 15:14:15 (UTC+0200) | jeu. 19 août 2010 15:29:15 CEST -0.079685 secondes <-- add another 10 minute jeudi 19 août 2010, 15:14:35 (UTC+0200) | jeu. 19 août 2010 15:29:36 CEST -1.001568 secondes jeudi 19 août 2010, 15:14:56 (UTC+0200) | jeu. 19 août 2010 15:29:57 CEST -0.985952 secondes As you can see, after 20 minutes without touching the computer, the system time is late by 15 minutes. It did not happen with an ubuntu 8.04 kernel ie 2.6.24-28, so I said it was a regression when asked by ubuntu-bug It has indirect security consequences, because for example after these 20 minutes, I was still able to sudo without being asked for a password. Screen locking does not happen The script must be run with sudo because of hwclock This is an Amilo Xi 2550 notebook. WORKAROUND: processor.max_cstate=1 WORKAROUND: nohz=off ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: linux-image-2.6.32-24-generic 2.6.32-24.39 [modified: lib/modules/2.6.32-24-generic/kernel/drivers/usb/serial/cp210x.ko] Regression: Yes Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.32-24.39-generic 2.6.32.15+drm33.5 Uname: Linux 2.6.32-24-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: cynove 1823 F.... pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf0800000 irq 22' Mixer name : 'Realtek ALC883' Components : 'HDA:10573055,10573055,00100700 HDA:10ec0883,17341238,00100002' Controls : 29 Simple ctrls : 18 Card1.Amixer.info: Card hw:1 'HDMI'/'HDA ATI HDMI at 0xcfeec000 irq 17' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100000' Controls : 5 Simple ctrls : 2 Date: Thu Aug 19 15:23:03 2010 HibernationDevice: RESUME=UUID=d8f0ebc9-37f3-4cdb-aca7-44a4bc42c13e MachineType: FUJITSU SIEMENS AMILO Xi 2550 ProcCmdLine: root=UUID=d6f01bdd-8503-4992-bc4e-a511f74318fb ro quiet splash ProcEnviron: PATH=(custom, user) LANG=fr_FR.utf8 SHELL=/bin/bash RelatedPackageVersions: linux-firmware 1.34.1 SourcePackage: linux dmi.bios.date: 03/05/2008 dmi.bios.vendor: Phoenix dmi.bios.version: 1.11C dmi.board.name: F44 dmi.board.vendor: FUJITSU SIEMENS dmi.board.version: 00030D0055014B3C dmi.chassis.type: 10 dmi.chassis.vendor: FUJITSU SIEMENS dmi.modalias: dmi:bvnPhoenix:bvr1.11C:bd03/05/2008:svnFUJITSUSIEMENS:pnAMILOXi2550:pvr:rvnFUJITSUSIEMENS:rnF44:rvr00030D0055014B3C:cvnFUJITSUSIEMENS:ct10:cvr: dmi.product.name: AMILO Xi 2550 dmi.sys.vendor: FUJITSU SIEMENS To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/620455/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
