Hallo, I use a Fujitsu Siemens Amilo Xi 2550 (Intel Centrino Dual Core) and FC 9. When KDE goes to some power save mode, the clock goes back afterwards, e.g., the clock shows 11:18, but it is 11:48. Usually, the difference is exactly 20 minutes or exactly 30 minutes or something like that. There are some interesting lines in dmesg: ENABLING IO-APIC IRQs ..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1 checking TSC synchronization [CPU#0 -> CPU#1]: passed. Brought up 2 CPUs Marking TSC unstable due to: TSC halts in idle. Clocksource tsc unstable (delta = -185554878 ns) -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list