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Upon reboot, at the point after "shutdown -r now" where it says "rebooting system", the kernel crashes. However, system halt works fine. My system: Red Hat 5.2 (kernel 2.0.36-7) installed out of the box Intel 486 DX4-100 16MB RAM (48 virtual) VESA/ISA IDE, no SCSI This system works just fine in Windows, as well as with the warm boot system call. I've compiled the 2.2.5 kernel on this machine, and the kernel doesn't crash, but it hangs at "rebooting system". Following is the kernel dump when it crashes using the 2.0.36 kernel: rebooting system Oops: 0000 CPU: 0 EIP: 0010:[<001ae8c0>] EFLAGS: 00010212 eax: 000000f9 ebx: 00000000 ecx: 28121969 edx: 000000f9 esi: 00000001 edi: 00000001 ebp: 000000f9 esp: 00cfaf9c ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018 Process linuxrc (pid: 6, process nr: 6, stackpage = 00cfa000) Stack: 00109c2d 00006810 00000001 00000001 bffffee4 000186a0 00114a91 0010abc5 fee1dead 2812169 01234567 00000001 00000001 bffffee4 ffffffda 0000002b 0000002b 0804002b 0000002b 00000058 08049a33 00100023 00000282 bffffede Call Trace: [<00109c2d>] [<00114a91>] [<0010abc5>] Code: eb 0c 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 eb 0e 8d b4 VFS: Cannot open root device 08:22 Kernel panic: VFS: Unable to mount root fs on 08:22 Check out the ninth word in the stack "fee1dead". "Feel Dead". Very cute :) Regards, Clarence Donath mrdo http://mrdo.com
More information: I've replaced the 72-pin DIMM memory with new chips, for a total of 32MB. This had no effect. The problem still exists.
Sounds like you have an APM bios implementation that is not fully compatible with the kernel APM stuff. Recompile the kernel with APM support disabled and reopen if this still occurs. At the point where you are getting the trouble the kernel may be trying to send the APM bios a signal to reboot or shutdown and it is getting confused.