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------- Additional Comments From mgg@... 2005-01-20 12:52 -------
I recently got a very similiar laptop (1522WLMi), which differs only in the CPU
speed as far as I know. My r8169 works fine in most situations, but I've been
seeing a number of problems that appear to be related to ACPI/IRQ routing. I
swapped out the non-Linux internal wireless card for an ipw2100, which lead me
to investigate further while trying to get it to work. I've been mailing
Richard Dawes regarding this laptop and he suggested attaching to this bug.
I've put a bunch of dmesgs, etc relating to the tests above on
http://nobodymuch.org/laptop/acpi/ - didn't want to make lots of attachments
until I was sure this was related/helpful.
When I boot the machine with the latest FC3 kernel (x86-32), it goes through the
normal allocation processes, then catches a bad IRQ and disables the interrupt,
breaking things. Attempting to load the ipw2100
driver causes another bad IRQ and more failure. Loading various combinations of
modules that seem to use the same IRQ always seems to end up with a bad IRQ error.
If I load with pci=noacpi or acpi=noirq, I get some warnings about routing
conflicts, but everything seems to work fine. It looks like the IRQ assignments
9: 0 XT-PIC acpi
10: 109 XT-PIC uhci_hcd, uhci_hcd, yenta, eth1(ipw2100)
11: 77 XT-PIC VIA8233, ehci_hcd, uhci_hcd, yenta, ohci1394,
(failure, no additional parameters)
9: 0 XT-PIC acpi, VIA8233, uhci_hcd, yenta
10: 100000 XT-PIC uhci_hcd, ohci1394
11: 100000 XT-PIC ehci_hcd, uhci_hcd, yenta
reading the dmesg, I think ipw2100 and r8169 were both allocated IRQ11.
With an x86-64 FC3 install and kernel (which I believe Richard is using),
similar things happen, but the pci=noacpi and acpi=noirq options don't help -
instead they cause it to apparently assign IRQ 0. It looks like the x86-64
kernel forces use of APIC, which may have something to do with it.
2.6.11-rc1 gives the same results on x86-32, but I've not built it for x86-64 yet.
Finally, it all works fine in Win/XP Home, which is also on the laptop at the
minute (assigning the ipw2100 to IRQ21 & the r8169 to IRQ22).
I have FC3-32, FC3-64 & Win/XP currently on the laptop, so can test with any of
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