Dell Latitude D820, T7200 processor, x86_64 kernel. The MSI IRQs for
HDA-Intel evaporate fairly consistently some time after boot. On a few
occasions, the MSI IRQ for the ethernet interface also has dropped.
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)
09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5752 Gigabit Ethernet PCI Express (rev 02)
A while after boot I have this in /proc/interrupts:
Sat Oct 6 22:25:19 EDT 2007
CPU0 CPU1
0: 222717 0 IO-APIC-edge timer
1: 9 1783 IO-APIC-edge i8042
8: 0 0 IO-APIC-edge rtc
9: 2 0 IO-APIC-fasteoi acpi
12: 86 0 IO-APIC-edge i8042
14: 5490 30700 IO-APIC-edge libata
15: 36 0 IO-APIC-edge libata
16: 2657 0 IO-APIC-fasteoi nvidia
19: 9 0 IO-APIC-fasteoi ohci1394, yenta
20: 125 6393 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2
21: 90 0 IO-APIC-fasteoi uhci_hcd:usb3
22: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
23: 0 0 IO-APIC-fasteoi uhci_hcd:usb5
312: 149 19249 PCI-MSI-edge eth0
313: 92 0 PCI-MSI-edge iwl3945
314: 5375 0 PCI-MSI-edge HDA Intel
NMI: 0 0 Non-maskable interrupts
LOC: 63560 180342 Local interrupts
RES: 60295 49751 Rescheduling interrupts
CAL: 342 2070 function call interrupts
TLB: 2173 1804 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
SPU: 0 0 Spurious interrupts
ERR: 0
Ethernet, wireless, and sound card all have MSI interrupts attached.
Then after a while, this pops in dmesg:
[ 2086.388000] ALSA sound/pci/hda/hda_intel.c:563: hda_intel: No response from codec, disabling MSI: last cmd=0x012f1c00
[ 2087.389000] ALSA sound/pci/hda/hda_intel.c:576: hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x012f1c00
(The exact time has varied anywhere from 123 seconds after boot to 10,502 secs).
And now /proc/interrupts looks like:
Sat Oct 6 23:26:59 EDT 2007
CPU0 CPU1
0: 2438973 0 IO-APIC-edge timer
1: 9 10061 IO-APIC-edge i8042
8: 0 0 IO-APIC-edge rtc
9: 2 0 IO-APIC-fasteoi acpi
12: 86 0 IO-APIC-edge i8042
14: 5490 87784 IO-APIC-edge libata
15: 36 0 IO-APIC-edge libata
16: 30831 0 IO-APIC-fasteoi nvidia
19: 9 0 IO-APIC-fasteoi ohci1394, yenta
20: 125 55664 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2
21: 91 13292 IO-APIC-fasteoi uhci_hcd:usb3, HDA Intel
22: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
23: 0 0 IO-APIC-fasteoi uhci_hcd:usb5
312: 149 101422 PCI-MSI-edge eth0
313: 2378 0 PCI-MSI-edge iwl3945
314: 15643 0 none-edge
NMI: 0 0 Non-maskable interrupts
LOC: 395385 1640119 Local interrupts
RES: 675388 582673 Rescheduling interrupts
CAL: 429 2195 function call interrupts
TLB: 5776 4119 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
SPU: 0 0 Spurious interrupts
ERR: 0
Sound card has moved to IRQ 21, and 314 is left hanging in the breeze.
I've also seen the eth0 MSI IRQ evaporate, leaving *two* 'none-edge' IRQs,
but I can't replicate it at the moment, as it seems to happen pseudo-randomly.
Attachment:
pgpvXNhJkAkXZ.pgp
Description: PGP signature
- Follow-Ups:
- Prev by Date: Re: [PATCH 2/5] forcedeth: interrupt handling cleanup
- Next by Date: Re: [PATCH 0/2] Colored kernel output (run2)
- Previous by thread: XFS internal error
- Next by thread: Re: 2.6.23-rc8-mm[12] - the amazing disappearing MSI IRQ
- Index(es):
 |