Public bug reported:
Actual behaviour:
Boot Toshiba satellite pro 4600 (BX chipset, P3) as a thin client. Very slow
boot to log-in screen. Takes around 4 minutes to get log-in screen.
edit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
change splash to nosplash, remove quiet from kernel boot line then
observe booting laptop again.
Laptop shows
[ 17.438728] e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex
waits 3-4 minutes then shows:
[ 17.782386] Clocksource tsc unstable (delta = -3291491518 ns)
Interestingly, although 3 or more minutes have passed, the kernel
appears to have only clocked 343.6ms. This could point to a problem with
kernel interaction with hardware. However, there is no such delay when
the machine boots on the stock Ubuntu hardy kernel from hard drive, so
this may not belong directly with Ubuntu kernel bugs.
edit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default again, adding
acpi=off . The laptop now boots in reasonable time.
cd /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/
cp default my-mac-address
then revert default to how it was. This provides a solution.
Using current up-to-date default packages for ltsp.
ltsp-server-standalone:
Installed: 5.0.40~bzr20080212-0ubuntu7
Candidate: 5.0.40~bzr20080212-0ubuntu7
Version table:
*** 5.0.40~bzr20080212-0ubuntu7 0
500 http://ubuntu.virginmedia.com hardy-updates/main Packages
100 /var/lib/dpkg/status
5.0.40~bzr20080212-0ubuntu6 0
500 http://ubuntu.virginmedia.com hardy/main Packages
** Affects: ltsp (Ubuntu)
Importance: Undecided
Status: New
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LTSP thin client hangs 3-4 minutes at boot-up clocksource tsc unstable
https://bugs.launchpad.net/bugs/261794
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