Bug 13901
Summary: | During booting time message received "MP-BIOS bug: 8254 timer not connected to IO-APIC | ||
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Product: | ACPI | Reporter: | sunil datta (fedora) |
Component: | BIOS | Assignee: | acpi_bios |
Status: | CLOSED DOCUMENTED | ||
Severity: | normal | CC: | diegocg, lenb, yakui.zhao |
Priority: | P1 | ||
Hardware: | All | ||
OS: | Linux | ||
Kernel Version: | linux-2.6.30.3 | Subsystem: | |
Regression: | No | Bisected commit-id: | |
Attachments: | screen shot showing error. |
Description
sunil datta
2009-08-03 12:16:33 UTC
Created attachment 22585 [details]
screen shot showing error.
if i adding noapic after quiet, in grub, before booting. This error message is not displayed. If this is the solution to this problem. I would like to know the reason behind this problem. It's not a bug in the kernel, but a bug in your BIOS. I had a motherboard with that error, and I didn't have problems, it seems that the kernel workarounds it. My rhel also works fine, irrespective of this message. As I said earlier adding noapic removes this message. But I want to know if this is a kernel bug. (In reply to comment #3) > It's not a bug in the kernel, but a bug in your BIOS. I had a motherboard > with > that error, and I didn't have problems, it seems that the kernel workarounds > it. My rhel also works fine, irrespective of this message. As I said earlier adding noapic removes this message. But I want to know if this is a kernel bug. Agree with what Diego said in comment #3. On most boxes the 8254 timer can be routed to I/O APIC directly. But it seems that the 8254 timer is not routed to I/O APIC directly. Instead it is routed to I/O APIC through i8259. So I agree with what Diego said. It is a BIOS bug instead of kernel bug. Thanks. Thank you both for replying promptly. I appreciate that you have given your valuable time to my query. Thanks again. |