Paul hello. I hope i am too rude cci'ing you . We're using rtc on a supermicro p8sct hw. Our problem is that we are getting "lost interrupts" messages in 2.6.17.14. we get it by a simple rtc tester which reads in 8192hz rate. we do not have this problem in 2.6.15. I will appreciate any help. The bellow is lspci of this machine. 00:00.0 Host bridge: Intel Corp.: Unknown device 2778 (rev 81) 00:01.0 PCI bridge: Intel Corp.: Unknown device 2779 (rev 81) 00:1c.0 PCI bridge: Intel Corp.: Unknown device 27d0 (rev 01) 00:1c.4 PCI bridge: Intel Corp.: Unknown device 27e0 (rev 01) 00:1c.5 PCI bridge: Intel Corp.: Unknown device 27e2 (rev 01) 00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corp.: Unknown device 27b8 (rev 01) 00:1f.1 IDE interface: Intel Corp.: Unknown device 27df (rev 01) 00:1f.2 Class 0106: Intel Corp.: Unknown device 27c1 (rev 01) 00:1f.3 SMBus: Intel Corp.: Unknown device 27da (rev 01) 09:00.0 PCI bridge: Intel Corp.: Unknown device 032c (rev 09) 09:00.1 PIC: Intel Corp.: Unknown device 0326 (rev 09) 0a:01.0 Ethernet controller: Intel Corp.: Unknown device 1079 (rev 03) 0a:01.1 Ethernet controller: Intel Corp.: Unknown device 1079 (rev 03) 0d:00.0 Ethernet controller: Intel Corp.: Unknown device 108c (rev 03) 0e:00.0 Ethernet controller: Intel Corp.: Unknown device 109a 0f:00.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) -- Raz - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html