Toralf Förster wrote:

Randy Dunlap wrote at 18:11:32

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On Fri, 10 Jun 2011 10:40:19 +0200 Toralf Förster wrote:

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I've wondering about this entry at my ThinkPad T400 (kernel 2.6.39.1): ... 44: 484163 55698 PCI-MSI-edge ahci 45: 750 1809 PCI-MSI-edge eth0 46: 94 213 PCI-MSI-edge hda_intel 47: 44399 70713 PCI-MSI-edge l▒��@�E� 48: 71969 102457 PCI-MSI-edge iwlagn

Is there any other info (like dmesg or boot log) that tells what device/driver uses interrupt 47 ?

I attached the dmesg output

ahci 0000:00:1f.2: irq 44 for MSI/MSI-X e1000e 0000:00:19.0: irq 45 for MSI/MSI-X iwlagn 0000:03:00.0: irq 46 for MSI/MSI-X HDA Intel 0000:00:1b.0: irq 47 for MSI/MSI-X i915 0000:00:02.0: irq 48 for MSI/MSI-X

These interrupt numbers do not match; I'd guess that you rebooted and that the drivers were initialized in a different order.

Anyway, it looks as if the i915 driver is the culprit.

A quick look into the DRM code shows that it uses dev->devname as interrupt name, but that field might get freed by drm_setversion(). (Or I might be wrong; I don't have this hardware.)

Regards, Clemens