On 15/07/07, Matthew Dharm <[EMAIL PROTECTED]> wrote: > On Sat, Jul 14, 2007 at 10:14:11PM -0700, Akkana Peck wrote: > > > On Fri, 13 Jul 2007, Dylan Taft wrote: > > > > Thanks for the reply. > > > > This started happening in 2.6.21 suddenly, which is why I tried > > > > upgrading to 2.6.22. > > > > Alan Stern writes: > > > It would be a good idea for you to post this on the Bluetooth > > > development list > > > > I don't think it's bluetooth specific. I just started seeing this > > too, and I don't have bluetooth. I built 2.6.22.1 and tried it; it > > worked for a short time, but then sound and a USB mouse (plugged in > > through an external USB2 hub) both started getting flaky. Turns out > > sound and USB are both on IRQ 9 (as is pcmcia, and I guess the > > pcmcia network card wins). The machine is a Vaio SR17 laptop. > > Strangely, 2.6.21.3 had been working fine for weeks, even with a hub. > > > > I got a dmesg similar to the one that started this thread (pasted at > > the end of this message). Booting with irqpoll does fix it, but I'd > > rather not do that: this is an old and slow PIII machine, but it > > worked great with older kernels. Booting with noapic doesn't help. > > Not long ago, I learned that IRQ 9 is commonly used by ACPI. I've got > several machines which won't boot certain kernel versions (and this problem > seems to "come and go" as the versions progress). > > Booting with "acpi=off" makes them all work. I have no idea why. You may > also want to fiddle with any BIOS settings to enable/disable ACPI. > > Matt > > -- > Matthew Dharm Home: [EMAIL PROTECTED] > Maintainer, Linux USB Mass Storage Driver >
Although the OP was about IRQ 23, the above reply is about IRQ9. To contribute my own findings ( irq 7 ), which is now solved ( pci=msi,mmconf ) for an x86_64 kernel as mentioned in the end of the bug report below: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=244563 Regards, John ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
