Disabling IRQ #4 (serial related)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned | ||
linux-source-2.6.17 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
$ dmesg | tail -15 | cut -c19-
irq 4: nobody cared (try booting with the "irqpoll" option)
<c0139ed4> __report_
<c0139993> handle_
<c01056f9> do_IRQ+0x19/0x30 <c0103e8a> common_
<c02221a2> serial8250_
<c021ed0f> uart_open+
<c020de51> tty_open+
<c01607e0> chrdev_
<c0156855> nameidata_
<c0115d10> default_
<c015690a> do_sys_
<c0102dbb> sysenter_
handlers:
[<c0222520>] (serial8250_
Disabling IRQ #4
$ grep ' 4:' /proc/interrupts
4: 200074 IO-APIC-edge serial
$ sudo setserial -g /dev/ttyS0
/dev/ttyS0, UART: undefined, Port: 0x03f8, IRQ: 4
This laptop (ThinkPad R52) does not have a physical serial port (there is IRDA) on the main body, although there could be one wired for the docking bay.
I've seen this issue once before.
description: | updated |
Changed in linux-source-2.6.17: | |
status: | New → Confirmed |
i also have this problem with a wireless card (Broadcom) and ndiswrapper. after a few minutes of perfect work the card just stops working with a console message of disabling irq #xxx (the irq number changes). I am working with edgy x86 but i got the same problem with amd64.