Toby Bluhm wrote: > On 6/7/2013 8:10 AM, Robert Heller wrote: >> After installing a Phenom II X4 processor (replacing a single core >> Semperon) I >> am getting these messages on the console and in dmesg: >> >> Warning Timer ISR/2: Time went backwards: delta=-250135996 >> delta_cpu=13864004 shadow=1355887856733 off=870052783 >> processed=1357008044419 cpu_processed=1356744044419 >> 0: 1357004044419 >> 1: 1356696044419 >> 2: 1356744044419 >> 3: 1356696044419 >> printk: 41 messages suppressed. > > I had an AMD box that started reporting time going backwards. Turned out > the heatsink was loose because the retainer tab cracked off - cpu > continuously cycled thru overheat, throttle down, overheat, throttle > down, etc. Following up Robert, I trust the new CPU came with its own heat sink and fan, and you used the thermal grease? Also, is the cooling and power in the case adequate? mark