Red Hat Bugzilla – Bug 140786
irq problem (acpi related?) with USB pcmcia card and mini-pci wireless NIC
Last modified: 2015-01-04 17:13:04 EST
Description of problem:
irq problem when inserting a pcmcia USB 2.0 card
Version-Release number of selected component (if applicable):
All of 2.6.5-1.358, 2.6.8-1.521, 2.6.9-1.6_FC2
Steps to Reproduce:
1. Boot system. kernel choice seems not to matter. apm=off only
option specified. That seemed to be necessary during install and was
carried into grub.conf from there.
2. Test network. All is good.
3. Insert card. See message in current terminal that IRQ 11 is
4. Test network. Notice that mini-pci wireless card is now
disconnected from access point and nothing I've tried other than
rebooting without the pcmcia card brings it back.
5. Plug usb device (external hard drive) into pcmcia card. It is not
Neither pcmcia USB card nor wireless NIC work any more
Both devices should work
This is on a Dell 5100 laptop. This worked under Core 1 and RH9
though in those cases I was using custom kernels to get the latest
acpi patches in and because I was dual booting at the time and needed
to enable NTFS. Now that my laptop is M$-free I do not need to do
that any more.
The mini-pci is a Dell something that uses a broadcom chipset. I use
the linuxant driverloader to support it.
Key message from dmesg suggests:
irq 11: Please try booting with acpi=off and report a bug
Turning off acpi did not fix the problem though I have not checked
dmesg messages in that situation to see what else it might say.
For what it's worth, the problem continues in Fedora Core 3.
Fedora Core 2 has now reached end of life, and no further updates will be
provided by Red Hat. The Fedora legacy project will be producing further kernel
updates for security problems only.
If this bug has not been fixed in the latest Fedora Core 2 update kernel, please
try to reproduce it under Fedora Core 3, and reopen if necessary, changing the
product version accordingly.
Still a problem in FC3. I have upgraded to kernel 2.6.11-1.14_FC3 and also
tried to put irqpoll and irqfixup on the boot line. One promising thing, using
those options, the card works OK (that is, USB works) if I boot with it in the
slot though the NIC still gets confused shortly after boot. If I boot with the
card outside the slot and insert it, the card doesn't work properly (that is,
USB doesn't work) and the NIC loses as well.
May as well close it. The card has now died and I don't plan on buying another.