On Thu, Jan 22, 2009 at 07:15:05PM -0500, Chuck Anderson wrote: > My Lenovo T61 occasionally goes crazy with interrupts under kernels >= > 2.6.28. powertop shows the situation clearly: > > Top causes for wakeups: > 99.4% (64644.0) <interrupt> : ahci, uhci_hcd:usb5, yenta, > i915@pci:0000:00:02.0 > > How does one tell which device is causing all these interrupts? > Short answer: you can't. We don't currently log which irq handler successfully handled an interrupt (since on a shared line, we poke each one in sequence until they're all tried (since we can't know which devices actually raised the irq.)) Long answer: I testbuilt a patch but don't feel like rebooting any of my machines to see if it works. Poke me privately if you want to rebuild your kernel and try it. regards, Kyle -- fedora-test-list mailing list fedora-test-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-test-list
