I have a reproducible pattern: on kernel 2.6.30-rc6, I get these
[ 0.881484] rtc_cmos 00:03: setting system clock to 2009-05-23 19:56:41 UTC
(1243108601)
[ 0.881545] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 0.881597] EDD information not available.
[ 1.000049] Clocksource tsc unstable (delta = -112215141 ns)
everytime ONE second after boot. I attach lscpi, and a complete dmeg.
The patterns are highly similar :
May 23 10:21:14 laptop kernel: [ 0.881659] rtc_cmos 00:03: setting system
clock to 2009-05-23 08:20:35 UTC (1243066835)
May 23 10:21:14 laptop kernel: [ 0.881720] BIOS EDD facility v0.16
2004-Jun-25, 0 devices found
May 23 10:21:14 laptop kernel: [ 0.881772] EDD information not available.
May 23 10:21:14 laptop kernel: [ 1.000146] Clocksource tsc unstable (delta =
-112013565 ns)
--
May 23 11:13:47 laptop kernel: [ 0.877902] rtc_cmos 00:03: setting system
clock to 2009-05-23 09:13:06 UTC (1243069986)
May 23 11:13:47 laptop kernel: [ 0.877963] BIOS EDD facility v0.16
2004-Jun-25, 0 devices found
May 23 11:13:47 laptop kernel: [ 0.878014] EDD information not available.
May 23 11:13:47 laptop kernel: [ 1.000223] Clocksource tsc unstable (delta =
-116434829 ns)
--
May 23 20:32:25 laptop kernel: [ 0.898544] rtc_cmos 00:03: setting system
clock to 2009-05-23 18:31:46 UTC (1243103506)
May 23 20:32:25 laptop kernel: [ 0.898605] BIOS EDD facility v0.16
2004-Jun-25, 0 devices found
May 23 20:32:25 laptop kernel: [ 0.898652] EDD information not available.
May 23 20:32:25 laptop kernel: [ 1.000094] Clocksource tsc unstable (delta =
-87870418 ns)
--
May 23 21:57:21 laptop kernel: [ 0.881484] rtc_cmos 00:03: setting system
clock to 2009-05-23 19:56:41 UTC (1243108601)
May 23 21:57:21 laptop kernel: [ 0.881545] BIOS EDD facility v0.16
2004-Jun-25, 0 devices found
May 23 21:57:21 laptop kernel: [ 0.881597] EDD information not available.
May 23 21:57:21 laptop kernel: [ 1.000049] Clocksource tsc unstable (delta =
-112215141 ns)
** Attachment added: ""dmesg" and "lspci -v""
http://launchpadlibrarian.net/27097538/dmesg-lspci.tar
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Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
https://bugs.launchpad.net/bugs/355155
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