G'day, I am testing a new server with a Supermicro X7SBA motherboard and TE405 cards. When I load Dahdi and run dahdi_cfg I get the following errors: kernel: Uhhuh, NMI received for unknown reason b1 on CPU 0 You probably have a hardware problem with your RAM chips Dazed and confused, but trying to continue The reason codes I have seen are a0, a1, and b1. The problem only occurs once and the system seems to work fine after that. If I cat /proc/interrupts, I only see 1 NMI and it is only for CPU 0. I also saw the same error with this computer when I tried an older version of Zaptel. I ran memtest86 overnight on the server and had 0 failures so I doubt that the problem is RAM. Computer: Supermicro X7SBA, Intel E5300, 2xWD SATA, Bios 1.2a XGI Tech video O/S: CentOS 5.4, 2.6.18-164 i386 SMP most updates applied Dahdi: complete 2.3.0+2.3.0 I have tried options per the Digium page: http://kb.digium.com/entry/64/ nmi_watchdog=0 pci=noacpi nmi_watchdog=0 pci=norouteirq acpi=off pci=noacpi noapic vga=0x31a nmi_watchdog=0 <- would not boot Any suggestions on what else I could try? Also, on this same computer when using the Zaptel driver, I am getting a lot of SIS errors from the wct4xxp driver: !!!SIS Waiting before cmd 08 !!!SIS waited 1 loops Thanks, -- Wade Hampton